RECOMMENDED FOR FULL-TEXT PUBLICATION
                                Pursuant to Sixth Circuit Rule 206
                                      File Name: 06a0067p.06

                    UNITED STATES COURT OF APPEALS
                                  FOR THE SIXTH CIRCUIT
                                    _________________


                                                         X
                                    Plaintiff-Appellee, -
 UNITED STATES OF AMERICA,
                                                          -
                                                          -
                                                          -
                                                               No. 04-6428
            v.
                                                          ,
                                                           >
 KEVIN MARTIN,                                            -
                                 Defendant-Appellant. -
                                                         N
                           Appeal from the United States District Court
                      for the Eastern District of Tennessee at Chattanooga.
                         No. 03-00257—R. Allan Edgar, District Judge.
                                   Argued: December 7, 2005
                            Decided and Filed: February 21, 2006
                   Before: MARTIN, COLE, and GILMAN, Circuit Judges.
                                      _________________
                                          COUNSEL
ARGUED: Robert D. Philyaw, PHILYAW & SMITH PLLC, Signal Mountain, Tennessee, for
Appellant. Gregg L. Sullivan, ASSISTANT UNITED STATES ATTORNEY, Chattanooga,
Tennessee, for Appellee. ON BRIEF: Robert D. Philyaw, PHILYAW & SMITH PLLC, Signal
Mountain, Tennessee, for Appellant. Perry H. Piper, ASSISTANT UNITED STATES
ATTORNEY, Chattanooga, Tennessee, for Appellee.
       GILMAN, J., delivered the opinion of the court. MARTIN, J. (pp. 15-17), also delivered a
separate concurring opinion.
                                      _________________
                                          OPINION
                                      _________________
        RONALD LEE GILMAN, Circuit Judge. In this case of first impression, we consider
whether the United States Sentencing Commission failed to comply with Congress’s directive when
it established ratios to estimate the amount of methamphetamine that can reasonably be
manufactured from certain precursor chemicals. The issue arises in the context of Kevin Martin’s
challenge to the sentence imposed on him after he pled guilty to five counts relating to the
manufacture of methamphetamine and the possession of pseudoephedrine as a precursor chemical.
       Relying on a Presentence Report (PSR) to which Martin had objected on Sixth Amendment
grounds, the district court sentenced Martin to 189 months of imprisonment on each count, with the
sentences to run concurrently. This sentence was calculated using a 50% ratio for converting the

                                                1
No. 04-6428            United States v. Martin                                                    Page 2


amount of pseudoephedrine attributed to Martin into the corresponding quantity of
methamphetamine. The Sentencing Commission promulgated the conversion ratio in response to
a statute enacted in 2000 that required it to establish a table of such ratios “based on scientific, law
enforcement, and other data the Sentencing Commission considers appropriate.” Pub. L. No. 106-
310, § 3651(b)(2), 114 Stat. 1238-39 (2000).
         On appeal, Martin argues that (1) the ratio set forth in the Sentencing Guidelines commentary
for converting the precursor chemical pseudoephedrine to methamphetamine is invalid both because
it does not comply with the statutory mandate and because it is arbitrary and capricious, (2) the
district court erred in calculating his criminal history category, and (3) the district court violated his
Sixth Amendment rights as interpreted by United States v. Booker, 

(2005). Although
we hold that the unambiguous language of the statute requires the Commission to utilize both
scientific and law enforcement data, we ultimately conclude that Martin has not met his burden of
showing that the Commission actually failed to base the conversion ratios on both types of data
when it relied on a report prepared by the Drug Enforcement Administration (DEA). We also reject
Martin’s challenge to the calculation of his criminal history category, but agree that the district
court’s Booker error entitles him to resentencing. Accordingly, we VACATE Martin’s sentence and
REMAND the case for resentencing consistent with Booker.
                                         I. BACKGROUND
A.      Statutory and Guidelines framework
        Congress responded to growing concerns about a “methamphetamine epidemic in America,”
United States v. Layne, 

, 468 (6th Cir. 2003) (quoting H.R. Rep. 106-878, at 22 (Sept.
21, 2000)), by passing the Methamphetamine and Club Drug Anti-Proliferation Act of 2000 (the
Act), Pub. L. No. 106-310, §§ 3601-3673, 114 Stat. 1101, 1227-46 (2000). Supplanting the
individualized determination of how much of a controlled substance certain chemicals would yield,
see United States v. Hamilton, 

, 653-54 (6th Cir. 1996), the Act instructed the United
States Sentencing Commission to
        (1) . . . review and amend its guidelines to provide for increased penalties such that
        those penalties corresponded to the quantity of controlled substance that could
        reasonably have been manufactured using the quantity of ephedrine,
        phenylpropanolamine, or pseudoephedrine possessed or distributed.
        (2) CONVERSION RATIOS. For the purposes of the amendments made by this
        subsection, the quantity of controlled substance that could reasonably have been
        manufactured shall be determined by using a table of manufacturing conversion
        ratios for ephedrine, phenylpropanolamine, and pseudoephedrine, which table shall
        be established by the Sentencing Commission based on scientific, law enforcement,
        and other data the Sentencing Commission considers appropriate.
Pub. L. No. 106-310, § 3651(b), 114 Stat. 1238-39 (2000) (emphasis added).
        The Commission responded to the congressional directive by promulgating Amendment 611.
In relevant part, Amendment 611 provides a new chemical-quantity table for precursor chemicals
like pseudoephedrine and a conversion table for those chemicals. See U.S. Sentencing Guidelines,
App. C, Amendment 611 (Nov. 1, 2003). These tables adopt a 50% conversion ratio for
pseudoephedrine, such that 2 grams of the chemical is equivalent to 1 gram of methamphetamine.
That ratio was inserted into the tables in § 2D1.1, cmt. n.10, which already established that 1 gram
of methamphetamine is to be treated as the equivalent of 20 kilograms of marijuana for sentencing
purposes. Since the enactment of Amendment 611, therefore, 1 gram of pseudoephedrine is treated
as the equivalent of 10 kilograms of marijuana.
No. 04-6428           United States v. Martin                                                   Page 3


        In adopting the 50% conversion ratio for pseudoephedrine, the Commission relied on a report
promulgated by the DEA’s Office of Diversion Control that was published on the website of the
Office of National Drug Control Policy (ONDCP). That report “indicate[d] that the actual yield of
methamphetamine from ephedrine and pseudoephedrine is typically in the range of 50 to 75
percent.” Proposed Amendments to the Sentencing Guidelines, 66 Fed. Reg. 7962, 7965 (Jan. 26,
2001) (citation omitted); see also U.S. Sentencing Guidelines, App. C, Amendment 611 (“This yield
is based on information provided by the Drug Enforcement Agency (DEA) that the typical yield of
these substances for clandestine laboratories is 50 to 75 percent.”). The DEA report on which the
Commission based its conversion ratio is no longer available on the DEA website and is not part of
the record in the present case. A document that appears to be the report, however, remains available
through another publically accessible website. See Gene Haislip, Methamphetamine Precursor
Chemical Control in the 1990’s (1996), http://www.erowid.org/archive/rhodium/
chemistry/dojmeth3.txt (stating that “[a]ctual yield in clandestine labs is typically in the range of 50
to 75 percent”) (last visited Feb. 14, 2006).
        When a defendant was convicted of an offense relating to the manufacture of
methamphetamine from precursor chemicals like pseudoephedrine prior to the passage of the Act
in 2000, the district court would rely on expert testimony to approximate the amount of
methamphetamine that could be produced from various precursor chemicals under differing
laboratory conditions. Experts would testify as to how much methamphetamine the precursor
chemicals would yield in a given situation, and the court would base its sentence on that yield
calculation. See U.S. Sentencing Guidelines § 2D1.1, cmt. 12 (2003) (“Where there is no drug
seizure or the amount seized does not reflect the scale of offense, the court shall approximate the
quantity of the controlled substance.”); see also, e.g., United States v. Brannon, 

, 520 (6th
Cir. 1993) (upholding the district court’s estimate of the quantity of methamphetamine, which was
based on the affidavits and testimony from a DEA agent and a chemist); United States v. Eschman,

, 891 (7th Cir. 2000) (rejecting the district court’s use of a one-to-one conversion rate
for pseudoephedrine where expert testimony contradicted the reliability of that rate). This court
required that the findings of the testifying experts be “particularized to individual laboratories,”

, a practice that the uniform conversion rate imposed by the Guidelines
provision rendered unnecessary.
B.      Crimes and conviction
       The government charged Martin with five offenses relating to the production of
methamphetamine, all of which stem from two incidents in late 2003. On November 24th of that
year, Martin, who was on supervised release for previous methamphetamine offenses, rented a hotel
room outside of Chattanooga, Tennessee. Law enforcement officers learned of a possible
methamphetamine laboratory at the hotel and arrested five people found in a room rented by Christi
Kinsey. Among those people was Genea Davis, Martin’s girlfriend, who consented to a search of
the room that she was sharing with Martin. In that room, the officers discovered a hot plate,
Coleman fuel, jars with multi-layered liquids, antifreeze, and a 1,000 milliliter flask—all materials
commonly found in methamphetamine labs. Subsequent tests confirmed that at least some of the
materials had been used to produce methamphetamine.
       The government learned from Davis that several of the articles recovered at the hotel
belonged to Rory Shankles, another known formulator of methamphetamine. Davis then led police
to Shankles’s residence, a location where Davis reported having seen Shankles and Martin
“cooking” methamphetamine two days earlier. Police obtained a warrant and searched the premises,
recovering 24 empty bottles of pseudoephedrine, an over-the-counter decongestant that is also a raw
material used to manufacture methamphetamine. Those bottles, when full, contained approximately
51 grams of pseudoephedrine.
No. 04-6428           United States v. Martin                                                   Page 4


        The second incident occurred on December 2, 2003, when police searched an abandoned
pickup truck that Martin had borrowed from his friends. Officers found items in the truck similar
to those previously discovered during the search of the hotel room in November, as well as 1.1
grams of methamphetamine residue attached to coffee filters.
       After Martin’s codefendants pled guilty to various methamphetamine-related charges, a
grand jury returned a superseding indictment charging Martin with five counts stemming from the
production of methamphetamine and the use of a hotel room as a methamphetamine lab. Martin
entered a guilty plea to all five counts on the day before his trial was scheduled to begin.
C.      Sentencing proceedings
         The final PSR attributed to Martin 51 grams of pseudoephedrine and 1.1 grams of seized
methamphetamine. Martin objected to the calculation of the drug quantity, arguing that the Supreme
Court’s intervening decision in Blakely v. Washington, 

(2004), barred the district court
from accepting a quantity that had neither been found by a jury beyond a reasonable doubt nor
admitted by Martin in his guilty plea. The government responded by offering the testimony of
Mitchell Smith, a member of the DEA task force who worked on the case, as well as that of Christi
Kinsey, one of Martin’s coconspirators. These witnesses explained Martin’s ties to the laboratory
found in the hotel room and to the pseudoephedrine bottles found at Shankles’s residence. The
district court credited this testimony in ruling that the amount from the empty bottles had properly
been attributed to Martin.
        In calculating Martin’s criminal history category, the PSR assessed one point for each of four
car thefts occurring between November 11 and December 4, 2000. Martin objected to these
assessments both in writing and at the sentencing hearing, arguing that he had engaged in “a string
of thefts or a common scheme to steal autos,” all of which were “related” offenses for which he
should have been assessed only one point under U.S. Sentencing Guidelines Manual § 4A1.2(a)(2).
The district court rejected Martin’s argument, observing that the offenses had taken place at different
times and at different locations, and that the state courts had not entered an order consolidating the
convictions. With Martin’s offense level and criminal history category yielding a Guidelines range
of 168 to 210 months, he was sentenced to 189 months in prison and 6 years of supervised release.
This timely appeal followed.
                                           II. ANALYSIS
A.     This court has the discretion to address Martin’s challenge to the validity of the
       Guidelines drug-conversion ratios even though he did not raise the issue before
       the district court
        The government’s initial argument is that Martin has waived any challenge to the validity
of the Guidelines provisions by failing to raise the issue before the district court. Citing United
States v. Chesney, 

, 567-68 (6th Cir. 1996), the government contends that all challenges
not presented to the district court are waived “unless the case is exceptional or where the rule would
produce a plain miscarriage of justice.”
        The general principle “that courts of appeals do not consider claims or arguments that were
not raised before the district court,” however, “is a prudential rule, not a jurisdictional one.” United
States v. Hayes, 

, 619 (6th Cir. 2000); see also United States v. Suarez, 

,
487 (6th Cir. 2001) (Boggs, J., dissenting in part) (“[T]his rule is one of prudence, not jurisdiction,
and the court has discretion to examine the issue under certain conditions.”). Moreover, this court
has frequently addressed belated challenges based on both constitutional and statutory grounds
where “the question [is] a purely legal one that has been fully briefed by both parties.” Id.; accord
United States v. Pickett, 

, 415 (6th Cir. 1991) (addressing the sentencing challenges of
No. 04-6428           United States v. Martin                                                       Page 5


a defendant who failed to raise the issues below where “[b]oth parties have extensively briefed the
issues at stake, and . . . the issues are wholly legal”); cf. Mayhew v. Allsup, 

, 823 (6th
Cir. 1999) (holding that the court of appeals may address an issue not presented to the district court
where “the issue allegedly forfeited is purely a matter of law, is dispositive, and, if applied, will
result in reversal”).
        In the present case, Martin’s challenges to the validity of the Guidelines provisions
governing methamphetamine-related offenses are purely legal in nature, and both parties have fully
briefed the issue. The specific challenges that Martin raises are also certain to recur, as the
government acknowledges in its brief by citing to three consolidated cases raising analogous
challenges that are currently pending before another panel of this court. Because the government
has fully briefed the relevant issue and will therefore suffer no prejudice from our decision to
address it at this time, we will exercise our discretion and take up Martin’s challenge despite his
failure to raise it before the district court.
B.     Martin has not demonstrated that the Commission failed to follow the
       Congressional command in formulating the 50% ratio
        Martin presents two challenges to the validity of the pseudoephedrine-conversion ratio
adopted by the Commission. First, he argues that “the Commission engaged in an unauthorized
delegation” by failing to follow Congress’s statutory command. His second contention is that the
use of the DEA report as the exclusive basis for the conversion ratio was “arbitrary and capricious”
and therefore unlawful.
        Even though the Supreme Court has declared that the Sentencing Guidelines are no longer
mandatory, United States v. Booker, 

, 245 (2005), Martin’s challenge to the validity
of the conversion ratios remains consequential because the district court is still required to “consult
[the] Guidelines and take them into account when sentencing.” 

(Opinion of Breyer, J.).
We must therefore consider Martin’s argument regarding the proper application of the Guidelines
in order to correctly instruct the district court on remand. See, e.g., United States v. Trammel, 

, 403 (6th Cir. 2005) (“While remand for resentencing is required under Booker, we
consider Trammel’s remaining claim under the Guidelines because the district court will need to
consider the correct Guidelines-recommended sentence in fashioning its own post-Booker sentence
on remand.”) (citation omitted).
        Because Martin did not present his statutory argument to the district court, we will apply the
“plain error” standard of review set forth in Rule 52(b) of the Federal Rules of Criminal Procedure.
See Johnson v. United States, 

, 467-70 (1997) (applying the four-pronged plain-error
analysis to a challenge first raised on appeal); see also 

(assuming that the
plain-error standard was appropriate in reviewing a Confrontation Clause challenge presented for
the first time on appeal); 

(Boggs, J., dissenting in part) (following
Hayes and applying plain-error analysis to a constitutional challenge of a federal criminal statute).
This court has summarized the “four distinct analyses” of the plain-error inquiry under Rule 52(b)
as follows:
       First, we are to consider whether an error occurred in the district court. Absent any
       error, our inquiry is at an end. However, if an error occurred, we then consider if the
       error was plain. If it is, then we proceed to inquire whether the plain error affects
       substantial rights. Finally, even if all three factors exist, . . . we must decide whether
       the plain error affecting substantial rights seriously affected the fairness, integrity or
       public reputation of judicial proceedings.
No. 04-6428           United States v. Martin                                                  Page 6


United States v. Thomas, 

, 630 (6th Cir. 1993) (interpreting the Supreme Court’s then-
recent decision in United States v. Olano, 

(1993)); see also United States v. Jones, 

, 670 (6th Cir. 1997) (en banc) (following Thomas’s division of the plain-error inquiry into
“four distinct, though interrelated, analyses”). We must decide at the outset, then, whether the
district court’s use of the conversion ratio established by Amendment 611 constituted an error. See

(“If a legal rule was violated . . . and if the defendant did not waive the
rule, then there has been an ‘error’ within the meaning of Rule 52(b) despite the absence of a timely
objection.”).
       1.      The plain language of the statute requires the Commission to base
               the conversion ratios, at a minimum, on both scientific and law
               enforcement data
        Martin first argues that the Commission failed to heed Congress’s command to base the
determination of the quantity of methamphetamine that “could reasonably [be manufactured]” from
precursor chemicals “on scientific, law enforcement, and other data the Sentencing Commission
considers appropriate.” Pub. L. No. 106-310, § 3651(b)(2), 114 Stat. 1239 (2000). This failure to
adhere to the language of the statute renders the challenged provisions invalid, Martin contends,
because the Commission’s “significant discretion . . . must bow to the specific directives of
Congress.” United States v. LaBonte, 

, 757 (1997) (citation omitted); see also United
States v. Butler, 

, 850 (6th Cir. 2000) (citing LaBonte for that proposition).
        At issue in LaBonte was the Commission’s interpretation of statutory language that directed
the Commission to “assure that the guidelines specify a sentence to a term of imprisonment at or
near the maximum term authorized for categories of 

(quoting 28 U.S.C.
§ 994(h)). The Commission had interpreted the phrase “at or near the maximum term authorized”
as excluding potential enhancements for so-called career offenders, 

,
but the Supreme Court invalidated the Commission’s reading as inconsistent with the unambiguous
statutory language. 

In doing so, the Court started from the premise that “Congress said
what it meant,” and examined whether the Guidelines commentary “accurately reflect[ed] Congress’
intent” by “[g]iving the words used their ordinary meaning.” 

(citation omitted); see also
Stinson v. United States, 

, 38 (1993) (deciding “that commentary in the Guidelines
Manual that interprets or explains a guideline is authoritative unless it violates the Constitution or
a federal statute”).
          This court’s decision in United States v. Butler, 

, 844 (6th Cir. 2000), applied
LaBonte to a provision of the Guidelines that instructed the sentencing court to increase by two the
offense levels of all defendants, regardless of their age, who “use[] or attempt[] to use a person less
than eighteen years of age to commit the offense or assist in avoiding detection of, or apprehension
for, the offense.” U.S. Sentencing Guidelines Manual § 3B1.4. The Commission enacted the
challenged Guideline in response to a statute that “directed the Commission to ‘promulgate
guidelines or amend existing guidelines to provide that a defendant 21 years of age or older who
has been convicted of an offense shall receive an appropriate sentence enhancement if the defendant
involved a minor in the commission of the offense.’” 

(quoting Violent
Crime Control and Law Enforcement Act of 1994, Pub. L. No. 103-22, § 140008, 108 Stat. 2033
(1994)) (emphasis added). This court held that the Commission had effectively “overrul[ed] . . . an
explicit Congressional declaration because it eliminated the age limit, lock, stock and barrel.”

. “Looking at the face of both the [congressional] directive and the
guideline,” the court concluded that the Commission had “flatly ignored a clear Congressional
directive.” 

will not apply Guidelines “[w]hen the Commission’s interpretation
. . . does not square with clear Congressional intent,” the Butler court declared the Guideline invalid
and instead applied the age restriction set forth in the authorizing statute. 

see also
United States v. Price, 

, 1369 (D.C. Cir. 1993) (explaining that whatever level of
No. 04-6428           United States v. Martin                                                   Page 7


deference is owed to the Commission, “that deference does not extend to interpretations in conflict
with a clear determination of Congress”).
        Invoking LaBonte and Butler, Martin focuses on the plain text of the Act. Martin’s argument
centers on the word “and,” which joins the types of data on which the Commission was to base the
conversion ratios it added to § 2D1.1 of the Sentencing Guidelines. According to Martin, the use
of “and”—which is normally conjunctive—required the Commission, at a minimum, to utilize both
scientific data and law enforcement data. The government, for its part, maintains that “Congress
stated [that the conversion] ratio could be based upon law enforcement data or other data the
Commission found to be appropriate.” (Emphasis added.) If the government’s disjunctive reading
is correct, then Martin cannot prevail because reliance on a single DEA report would be in keeping
with the Commission’s discretion to consider whatever sources it found “appropriate.”
         We think that the interpretation advanced by Martin is the correct one. His reading of the
statute can perhaps be illuminated by the following example: Assume that a state legislature directs
a commission that oversees the sale and distribution of certain food and beverage products to
promulgate regulations governing the sale of “alcoholic, caffeinated, and other beverages that the
commission considers to be addictive.” The most natural reading of such a statute is that the
commission must regulate the sale of both alcoholic and caffeinated beverages. The concluding
phrase “and other beverages that the commission considers to be addictive” allows the commission
to regulate the sale of additional beverages, but does not eliminate the commission’s obligation to
regulate at least the two types of products specifically listed by the legislature. That is, the statute
establishes two categories of beverages that the commission must regulate and a third that it may,
in its discretion, also regulate.
        This reading is the most natural one because, as this court recently explained at length,
“dictionary definitions, legal usage guides and case law compel us to start from the premise that
‘and’ usually does not mean ‘or.’” OfficeMax, Inc. v. United States, 

, 588 (6th Cir.
2005); see also 1A Norman J. Singer, Statutes and Statutory Construction § 21.14 at 183 (6th ed.
2000) (“The literal meaning of [‘and’ and ‘or’] should be followed unless it renders the statute
inoperable or the meaning becomes questionable.”) (emphasis added); 

(“The [two]
words are not interchangeable, and their strict meaning should be followed when their accurate
reading does not render the sense of the statute confusing and there is no clear legislative intent to
have the words not mean what they strictly should.”). In the context of evaluating an interpretation
by the Commission, the Supreme Court in LaBonte likewise reiterated that the words of statutes
delegating power to the Commission should be given their “ordinary 

(citation omitted), and the ordinary meaning of “and” is a conjunctive one. See also Woodall v. Fed.
Bureau of Prisons, 

, 245 (3d Cir. 2005) (opining that “the use of the word ‘and’ before
the final factor in [a] five-part list indicate[d] that Congress intended for the [Bureau of Prisons] to
weigh all of the factors listed”) (emphasis in original).
        In light of these interpretive principles, we find the government’s disjunctive reading of the
statute unpersuasive. The government inaccurately summarizes the meaning of the statute by
omitting the key word “scientific” and by replacing “and” with “or.” Its interpretation also violates
the grammatical rule known as the “rule of the last antecedent,” a principle that is consistent with
the interpretation of the Act that Martin advocates. Under that rule, “a limiting clause or
phrase”—here, the phrase “[that] the Commission considers appropriate”—“should ordinarily be
read as modifying only the noun or phrase that it immediately follows.” Barnhart v. Thomas, 

, 26 (2003); 2A Singer, Statutes and Statutory Construction § 47.33 at 369 (“Referential and
qualifying words and phrases, where no contrary intention appears, refer solely to the last
antecedent.”); see also United States v. Kerley, 

, 180 n.2 (2d Cir. 2005) (acknowledging
that the rule of the last antecedent is “not absolute,” but applying the rule where it led to an
interpretation of a statute “that not only comports with case law . . . but also makes eminent sense”).
No. 04-6428            United States v. Martin                                                    Page 8


        The phrase that the limiting clause follows in the Act is “other data.” If we apply the last
antecedent rule, we find a statute syntactically analogous to the beverages-commission example set
forth above. That is, the Commission has been conferred the discretion to base its conversion ratios
not just on scientific and law enforcement data, but also on additional sources that it “considers
appropriate.”
         The Fourth Circuit in Commonwealth of Virginia v. Browner, 

, 877 (4th Cir.
1996), faced an analogous limiting clause that followed the third category in a series of three. The
language in the Clean Air Act at issue in Browner required state permit programs to contain “an
opportunity for judicial review in State court of the final permit action by the applicant, any person
who participated in the public comment process, and any other person who could obtain judicial
review of that action under applicable law.” 

502(b)(6) of the Clean Air Act, 42
U.S.C. § 7661a(b)(6)). Virginia argued that the limiting clause “who could obtain judicial review
of that action under applicable law” applied to all three categories of people listed in the statute, such
that states needed “to grant standing to participants in the public comment process only if those
persons would otherwise have standing under existing law.” 

Circuit, however, refused to adopt that interpretation. Instead, it applied the last-
antecedent rule, reasoning that if the rule did not apply and Virginia’s reading was the correct one,
“then there would have been no need for Congress to have included the first two categories.” Id..
Similarly, if the last-antecedent rule does not apply in the present case, Congress need not “have
included the first two categories” listed in the Act—namely, scientific and law enforcement data.
        Finally, the government points to the fact that “Congress has not acted to modify or vacate
the Commission’s action,” something that it was permitted to do within 180 days after the
Commission issued its proposed amendment. See 28 U.S.C. § 994(p). Congressional silence, the
government urges, demonstrates legislative acquiescence in and implicit approval of the
Commission’s work. This court, however, has expressly refused to rely on legislative silence that
is “contrary to all other textual and contextual evidence of congressional intent.” 

(quoting Burns v. United States, 

, 136 (1991)). Accepting the government’s
argument, as this court noted in Butler, would “dictate that all enacted guidelines inherently satisfied
Congressional intent, and would eliminate [the courts’] vital role—described in LaBonte and other
cases—of squaring the enacted guideline with the original statutory language.” 

. Congress’s refusal to exercise its power to amend or modify the challenged Guidelines,
therefore, does not compel the conclusion that the Commission complied with the statutory text.
        2.      The record does not support Martin’s contention that the
                Commission failed to rely on both scientific and law enforcement
                data in formulating the challenged conversion ratio
        Our conclusion that the statute unambiguously requires the Commission to base the
conversion ratios on both scientific and law enforcement data, however, does not end our inquiry.
Rather, we must still determine whether Martin has shown that the Commission did not actually rely
on the requisite sources in promulgating the 50% conversion ratio.
        We begin by addressing the scope of our review of the Commission’s actions. Unlike in
LaBonte and Butler, the primary cases upon which Martin relies, we are not confronting a direct
facial conflict between the substance of the Commission’s promulgated Guidelines commentary and
the sentencing parameters set forth by federal statute. See 

(declaring
invalid Guidelines commentary that commanded a result contrary to “unambiguous” statutory
language); 

(concluding, after “[l]ooking at the face of both the
[congressional] directive and the guideline,” that the enacted Guideline directly overruled “an
explicit Congressional declaration” and was therefore invalid). Such a facial comparison is not
No. 04-6428           United States v. Martin                                                   Page 9


possible in a case like the one before us, where the defendant’s challenge is to the internal
procedures and methodology that the Commission followed in setting the relevant Guideline.
         We have found no case that authorizes a searching judicial inquiry into the internal
procedures by which the Commission implements Guidelines. To the contrary, the few courts to
discuss the matter have suggested that investigation into the Commission’s internal processes and
procedures may well be beyond the scope of judicial review. See United States v. Leroy, 

, 1098 & n.3 (10th Cir. 1993) (concluding that “[d]iscovery into the Guideline formulation
process would be an intrusion into a quasi-legislative rulemaking function delegated by Congress
solely to the Commission,” and observing that the Guidelines promulgation process “is not
susceptible to discovery”); United States v. Lopez, 

, 1296-97 (D.C. Cir. 1991) (holding
that the Commission’s alleged failure to provide adequate reasons for limiting age-related departures
was not subject to judicial review under the Administrative Procedures Act); United States v.
Vincent, 

, 431 (8th Cir. 1999) (stating that “the Sentencing Commission’s formulation
of the Guidelines is not subject to judicial review unless the Commission oversteps constitutional
bounds”).
        This court, following the D.C. Circuit’s decision in Lopez, issued an unpublished opinion
agreeing with the view that courts of appeals “lack[] authority to review the Sentencing
Commission’s rulemaking process” under the Administrative Procedures Act (APA). United States
v. Tapert, No. 92-1628, 

, at *9 (6th Cir. May 19, 1993) (per curiam). The Eleventh
Circuit reached the same conclusion a few years later in United States v. Wimbush, 

,
970 (11th Cir. 1997) (per curiam) (“Federal courts do not have authority to review the Commission’s
actions for compliance with APA provisions, at least insofar as the adequacy of the statement of the
basis and purpose of an amendment is concerned.”). These cases rejected the contention that a court,
pursuant to the APA, could invalidate otherwise lawful Guidelines provisions simply because the
Commission had not explained its reasons for implementing the challenged provisions. On the other
hand, these precedents do not address a situation like the one at issue, where a defendant argues not
that the Commission has failed to provide reasons for its actions, but instead that the reasons
provided demonstrate that the Commission has not complied with a congressional directive.
        We have not previously articulated, at least in our published opinions, limitations on judicial
review as broad as the ones announced in the cited cases. See 

-52 (rejecting
the broad conclusion of the Eighth Circuit in Vincent that the only limits on the Commission’s
authority are ones of a constitutional dimension). The present case likewise does not require us to
accept or reject such limitations. This is so because (1) even if we are permitted to delve into the
Commission’s methodology as a general matter, the type of searching review that Martin asks us
to conduct is impossible on the relatively thin record before us; and (2) Martin’s arguments are not
confined to the APA, but instead rely on the more general principle that courts “may set aside a
sentencing guideline . . . if it contravenes an unambiguously expressed intent of Congress or is
unreasonable.” Tapert, 

, at *5.
        In essence, Martin would have us conclude that the Commission’s recognition in the public
record that the chosen ratio mirrors the one found in a DEA report necessarily means that the ratio
was based exclusively on law enforcement data. But our analysis must focus not on the report,
which is not in the record, but rather on the information that the Commission provided when it
implemented the congressional directive. The Commission published notice of its proposed revised
Guidelines and conversion table in the Federal Register on January 26, 2001, stating that
       [t]his table, which provides for a 50 percent conversion ratio for ephedrine, PPA, and
       pseudoephedrine, was developed using data from the Drug Enforcement Agency,
       Office of Diversion Control, as published on the web site of the Office of National
       Drug Control Policy (ONDCP). These data indicate that the actual yield of
No. 04-6428           United States v. Martin                                               Page 10


       methamphetamine from ephedrine and pseudoephedrine is “typically in the range of
       50 to 75 percent[.]”
66 Fed. Reg. 7962, 7965 (Jan. 26, 2001). Martin also calls our attention to the June 6, 2001, Federal
Register, which further describes the promulgation of the new Guidelines amendments as follows:
       The Commission held a public hearing on the proposed amendments in Washington,
       DC on March 19, 2001. After a review of hearing testimony and additional public
       comment, the Commission promulgated the amendments set forth herein . . . . On
       May 1, 2001, the Commission submitted these amendments to Congress and
       specified an effective date of November 1, 2001.
66 Fed. Reg. 30512, 30513. These statements, along with the almost identical language published
in the explanatory notes to Amendment 611, make up the sum total of the information that we have
about the Commission’s creation of the conversion table. The record before us includes no
testimony and no further documentation regarding the Commission’s method of selecting the new
50% conversion ratio. No such evidence is contained in the district court record either, because
Martin did not present his argument to that court.
        These scant indications, in our view, do not suffice to demonstrate that the Commission
failed to base its ratio on both scientific and law enforcement data. Citing nothing more the
Commission’s statement that the ratio was “developed using data from the Drug Enforcement
Agency,” Martin asks us to infer that the DEA report consists solely of data gathered from law
enforcement sources, to the exclusion of all scientific sources. We do not believe that such an
inference is justified. A particular document, regardless of its institutional author, might contain
scientific data, law enforcement data, neither, or both. DEA reports could contain, for example, both
scientific data regarding the controlled laboratory yield ratios for different conversion methods, as
well as law enforcement statistics on which conversion methods were most popular among
methamphetamine manufacturers. A single report could synthesize the data from various primary
sources into a general conclusion more comprehensible to a layperson. Nothing in the language of
the enabling statute—which limits the Commission’s otherwise wide discretion, see 

—prohibits the Commission from obtaining both its scientific and law enforcement data
from the same source.
        Language in another federal statute, 28 U.S.C. § 995(c), suggests that Congress expected the
Commission to rely on source material provided by other federal entities. Congress instructed each
federal agency, “[u]pon the request of the Commission, . . . to make its services, equipment,
personnel, facilities, and information available to the greatest practicable extent to the Commission
in the execution of its functions.” 

The 2000 Act did not purport to negate
this congressional authorization, nor did it impose any requirement that the information utilized by
the Commission be raw data, as opposed to data previously collected and analyzed by other
governmental bodies.
        Furthermore, the presumption of regularity that attaches to the acts of government officials
requires us to resolve in favor of the Commission any doubt as to the Commission’s compliance with
the congressional mandate. As Judge Posner has observed, “[a] presumption of regularity attends
the Commission’s doings, as it does that of other official bodies.” United States v. Tomasino, 

, 742 (7th Cir. 2000); see also U.S. Postal Serv. v. Gregory, 

, 10 (2001) (noting
“that a presumption of regularity attaches to the actions of Government agencies”). “[I]n the
absence of clear evidence to the contrary, courts presume that [public officials] have properly
discharged their official duties,” United States v. Chemical Foundation, Inc., 

, 14-15
(1926), and Martin has not pointed to any evidence in the record—much less “clear evidence”—that
No. 04-6428           United States v. Martin                                               Page 11


can overcome the presumption that the Commission did consider the required variety of data in
promulgating the pseudoephedrine-conversion ratio.
        Notwithstanding our rejection of Martin’s challenge, we do not read the relevant authorities
as holding that, to be successful, all challenges to Guidelines provisions or commentary must be of
precisely the same ilk as the ones addressed in LaBonte and Butler—namely, that the substance of
the provision directly conflicts with the authorizing statute. We do believe, however, that there is
an important difference between the contention that a Guidelines provision is substantively
inconsistent with a clear statutory command and the assertion that the Commission has failed to
follow the procedural path prescribed by Congress. The decisions in LaBonte and Butler signal that
challenges of the former kind will likely succeed when the Commission acts contrary to the
unambiguously expressed intent of Congress. On the other hand, challenges of the latter variety are
likely to succeed only where (1) Congress has set forth clear procedural requirements for the
Commission to follow, and (2) the party advancing the challenge supplies evidence demonstrating
that Commission did not comply with those procedures.
       In the present case, the first of these two conditions is satisfied because Congress required
the Commission to base the 50% conversion ratio on at least two kinds of data—scientific and law
enforcement. The second condition, as we have explained, has not been met. Taking into account
both the possibility that the DEA report in question contains the required types of data and the
“presumption of regularity [that] attends the Commission’s doings,” 

,
we conclude that Martin’s proof is insufficient to show that the Commission contravened the
congressional directive in promulgating the 50% conversion ratio. The district court therefore did
not commit an error, plain or otherwise, in calculating Martin’s sentence using that ratio.
C.     The 50% conversion ratio is neither “arbitrary and capricious” nor
       otherwise unconstitutional
        Martin also argues that the conversion ratio, beyond failing to conform to the statutory
directive, is “arbitrary and capricious” because “DEA testimony before Congress and before federal
courts was significantly different” from the ratio eventually adopted. The familiar “arbitrary and
capricious” standard from § 706 of the Administrative Procedure Act (APA) is used to assess “the
reasonableness of an agency’s actions pursuant to its governing statute.” Ohio Pub. Interest
Research Group, Inc. v. Whitman, 

, 795 (6th Cir. 2004). The court that deals most
frequently with the APA, however, has held that the Sentencing Commission is generally not treated
as an agency under that statute. See Wash. Legal Found. v. U.S. Sentencing Comm’n, 

,
1450 (D.C. Cir. 1994) (holding that, unless specified by statute, the APA does “not apply to the
Commission because it is a part of the judicial branch.”).
        This court has not consistently applied the “arbitrary and capricious” standard to challenges
to Guidelines provisions, instead asking “whether the guideline is sufficiently reasonable in light
of congressional directions to the Sentencing Guideline Commission.” See United States v. Kincaid,

, 56 (6th Cir. 1992); see also 

(same); United States v. Kennedy,

, 889 (4th Cir. 1994) (“The Sentencing Commission brings expertise to the
implementation of its mandate, and we must accordingly defer to its interpretation as long as it is
sufficiently reasonable in light of the congressional directive.”) (citations and quotation marks
omitted). Nevertheless, because this court has not been consistent in articulating what standard of
review applies to a challenge of this sort, we will assume for the sake of argument that the
Commission’s selection of a conversion ratio of 50% could be struck down if such a choice were
indeed “arbitrary and capricious.”
       The thrust of Martin’s argument is that expert testimony in reported federal court opinions
and by DEA personnel before Congress conflicts with the Commission’s choice of 50% as the
No. 04-6428           United States v. Martin                                                Page 12


appropriate conversion ratio for pseudoephedrine. But the sources that Martin cites reveal that,
although yield rates are at times as low as 15%, they can also be as high as 85%. These
sources—among them the so-called “Iowa Study” and expert testimony by a DEA chemist in United
States v. Eschman, 

, 889 (7th Cir. 2000)—therefore reflect a “difference of opinion in
the scientific community” as to yield rates. See United States v. Pickett, 

, 418 (6th Cir.
1991). This “difference of opinion” is similar to the type of ongoing debate that this court has found
to be a rational basis for sentencing distinctions approved by Congress. See 

argument that the 100-to-1 crack-cocaine-to-powder ratio was unconstitutionally arbitrary, based
in part on the “difference of opinion in the scientific community” with regard to whether crack was
significantly more likely to lead to addiction than was cocaine).
        A yield rate of 50%, moreover, is not just a reasonable middle ground between two extremes,
but is also borne out by cases predating the Act—cases in which this court endorsed the 50% rate
as a valid approximation. See, e.g., United States v. Thompson, 86 F. App’x 144, 146-47 (6th Cir.
2004) (unpublished); United States v. Oldham, 13 F. App’x 221, 223 (6th Cir. 2001) (unpublished);
United States v. Pavlik, No. 93-2494, 

, at *7-*8 (6th Cir. Feb. 13, 1995)
(unpublished). The disparities evident in the studies cited by Martin, combined with the pre-Act
cases accepting the 50% yield rate, confirm that the Commission did not act “arbitrarily or
irrationally” in adopting that percentage as its conversion ratio. See 

.
         To the extent that we construe Martin’s “arbitrary and capricious” argument as a
constitutional challenge, like the government does, Martin faces an uphill battle. As an initial
matter, neither this circuit nor any other has decided whether amendments to the Sentencing
Guidelines are even subject to challenge as violating the substantive component of the Due Process
Clause. See United States v. Fortney, 

, 821 (8th Cir. 2004) (assuming without deciding
that such amendments were “subject to substantive due process challenge,” but calling the issue a
“serious” one). This court has continually rejected substantive-due-process challenges to the
Guidelines provisions themselves, see United States v. Gaines, 

, 329 (6th Cir. 1997)
(listing three cases that rejected substantive-due-process challenges to the crack-to-powder-cocaine
sentencing ratio), without deciding what standard of review applies when the action challenged is
one by the Commission rather than by Congress. See 

n.4 (discussing the
different standards of review applicable to substantive-due-process challenges to legislation and
similar challenges to the conduct of executive officials).
       As discussed above, if we apply to Martin’s contention the same standard used to evaluate
substantive-due-process challenges to congressional action, then Martin has failed to show that the
Commission “was acting arbitrarily or irrationally” in choosing the 50% ratio. 

. Likewise, if Martin is challenging Congress’s directive to the Commission for formulating the
conversion ratios, we believe that such a directive “was sufficiently rational to meet the demands
of substantive due process.” United States v. Pruitt, 

, 645 (6th Cir. 1998) (citation
omitted).
        Because he cannot demonstrate that the Commission acted “arbitrarily or irrationally” in
adopting the 50% yield rate, Martin cannot satisfy the more stringent standard of review that would
apply if the Commission is treated as if it were an executive official accused of a substantive-due-
process violation. See 

n.4 (noting that “the conduct of executive officials
must, at a minimum, ‘shock the conscience of federal judges’ to violate substantive due process”)
(citing Collins v. City of Harker Heights, 

, 126 (1992)). The Commission’s exclusive
reliance on the DEA report does not “shock the conscience” simply because other available
information was disregarded. Martin’s substantive-due-process claim therefore fails whether the
Commission is held to the same standard applied to an act of Congress or to the standard applied to
executive officials.
No. 04-6428            United States v. Martin                                                   Page 13


D.      The district court did not commit clear error in determining Martin’s criminal
        history category
         Martin also challenges the district court’s calculation of his criminal history category,
arguing that the four car thefts he committed in November and December of 2000 are “related”
offenses for which only one criminal history point should have been assessed. See U.S. Sentencing
Guidelines Manual § 4A1.2(a)(2) (establishing that prior sentences imposed in related cases are to
be treated as one sentence for purposes of calculating a defendant’s criminal history category). As
explained above, the district court on remand is required to “consult [the] Guidelines and take them
into account when sentencing” even after 

(Opinion of Breyer, J.), and we
must therefore review that court’s application of the Guidelines. In doing so, “[w]e continue . . . to
apply the standards of review we applied prior to Booker,” United States v. Davidson, 

,
310 (6th Cir. 2005), and thus will not overturn a district court’s determination as to whether offenses
are related unless that court has committed a clear error. United States v. Horn, 

, 613
(6th Cir.), cert. denied, 

(2004) (“[W]e must review deferentially, that is, for clear
error, the . . . district court’s determination that Horn’s prior robbery convictions were not related.”).
         The Application Notes to § 4A1.2(a)(2) define related offenses as ones “that (A) occurred
on the same occasion, (B) were part of a single common scheme or plan, or (C) were consolidated
for trial or sentencing.” U.S. Sentencing Guidelines Manual § 4A1.2, Application Note 3. Martin
concedes that the thefts occurred on different occasions and that the state trial court did not
consolidate the convictions. He insists, however, that the thefts “were part of a single common
scheme or plan” because they “were accomplished with the same modus operandi, specifically, that
a fake drivers license was used to secure permission for a test drive.”
         Martin has the burden of proving that the four thefts at issue were part of a “single common
scheme or plan,” a burden that he could satisfy by establishing that “his crimes were jointly planned
or that the commission of one entailed the other.” United States v. Irons, 

, 638-39 (6th
Cir. 1999). Irons is this court’s most extensive treatment of the “single common scheme or plan”
language in Application Note 3. The defendant in Irons was convicted of sending threatening letters
to his ex-girlfriend. He claimed that his previous convictions for violating a temporary protective
order and for robbing the victim’s home were “related” to each other and to the current crime as part
of a common scheme or plan. This court rejected his argument, holding instead that crimes are
related “only if the offenses were jointly planned, or, at a minimum, the commission of one offense
necessarily required the commission of another.” United States v. Carter, 

, 758 (6th
Cir. 2002) (discussing the holdings in Irons and in United States v. Ali, 

, 828 (7th Cir.
1992)). Because the defendant in Irons could not prove that he had decided to break into the
victim’s house at the same time that he violated the protective order, the offenses were held not to
be part of single common scheme or plan. 

.
         Similarly, Martin introduced no evidence that he planned the final three car thefts at the time
of the first theft, pointing only to the fact that all four crimes occurred within 23 days of one another.
This court has observed, however, that “offenses are not necessarily related merely because they
were committed within a short period of time.” 

; see also 

(noting that “[n]either close geographic [n]or temporal proximity commands a finding that the
defendant jointly planned the crimes”). Moreover, “prior convictions are not ‘related’ merely
because they are part of a crime spree.” 

; accord 

(“This
Court has further held that merely because crimes are part of a crime spree does not mean that they
are related.”). The four car thefts for which Martin was convicted took place in two different states
on four separate occasions, and Martin has presented no evidence establishing that the thefts were
anything other than a crime spree that ended when he was arrested for his role in the thefts on
December 4, 2000.
No. 04-6428           United States v. Martin                                                Page 14


       Martin’s argument that the common modus operandi rendered the crimes part of a single
scheme or plan is likewise unavailing. This court has held that “the simple sharing of a modus
operandi cannot alone convert [separate offenses] into one offense by virtue of their being a single
common scheme or plan.” 

(quoting United States v. Cowart, 

,
160 (6th Cir. 1996)). To the contrary, similar substantive crimes committed on different dates
involving different victims are not considered related even if each “was committed with the same
purpose or common goal,” usually that of acquiring money. 

. Although
Martin used the same tactics in stealing all four automobiles, the victim in each crime was different,
and the commission of one theft did not necessarily entail committing the other thefts. See 

(holding that two offenses were not related where they were committed weeks apart,
involved different victims, and the defendant operated with an accomplice during one crime but not
during the other).
        The government persuasively argues that Irons, Carter, and Horn foreclose Martin’s
argument. Those cases, the government contends, stand for the proposition that “the commission
of a series of individual, similar crimes does not mean that the resulting multiple convictions are
combined for criminal history purposes.” We agree. As stated above, a defendant seeking to show
that offenses are related must prove that the crimes were jointly planned or that commission of one
crime entailed committing the other crime or crimes. See 

. Because Martin
has not shown that the four car thefts were jointly planned or that committing one theft necessarily
entailed the other three, the district court properly refused to treat the offenses as related for
purposes of § 4A1.2(a)(2).
E.     Under Booker and its progeny, Martin’s sentence must be vacated and his case
       remanded for resentencing
        Martin argues, and the government concedes, that this court’s post-Booker cases require us
to vacate his sentence and remand the case to the district court for resentencing. See United States
v. Barnett, 

, 529 (6th Cir. 2005) (holding that sentencing under the mandatory
Guidelines regime creates a presumption of prejudice that the government must rebut with “clear
and specific evidence that the district court would not have . . . sentenced the defendant to a lower
sentence” if it had treated the Guidelines as advisory ); United States v. Oliver, 

, 378
(6th Cir. 2005) (applying Booker to a defendant convicted of methamphetamine-related offenses
whose sentence was increased by 12 months on the basis of facts found by the judge at sentencing).
The government has not attempted to rebut the presumption of prejudice in the present case. We
therefore vacate Martin’s sentence and remand for resentencing consistent with Booker.
                                       III. CONCLUSION
        For all of the reasons set forth above, we hold that (1) Martin has not demonstrated that the
Sentencing Commission failed to comply with the unambiguous statutory language when it
promulgated the 50% conversion ratio for pseudoephedrine now found at U.S. Sentencing
Guidelines Manual § 2D1.1 cmt. n.10, and (2) the ratio is not “arbitrary and capricious” or otherwise
unconstitutional. We also reject Martin’s challenge to the calculation of his criminal history
category, but agree that the district court committed a Booker error in sentencing Martin under a
mandatory Guidelines regime. Accordingly, we VACATE Martin’s sentence and REMAND the
case to the district court for resentencing consistent with Booker.
No. 04-6428           United States v. Martin                                                Page 15


                                     ____________________
                                       CONCURRENCE
                                     ____________________
        BOYCE F. MARTIN, JR., Circuit Judge, concurring. I join Judge Gilman’s persuasively
reasoned opinion. I write separately with regard to Martin’s sentencing claim as to whether his car
theft offenses were related for the purposes of the Guidelines. On this issue, I concur in the Court’s
opinion, because our precedent compels this conclusion. I still, however, continue to disagree with
that precedent. On this point, both pursuant to the Guidelines and for purposes of the Armed Career
Criminal Act, I have already beaten the dead horse. See United States v. Powers, 129 Fed. Appx.
942, 945 n.1 (6th Cir. 2005) (unpublished) (“Writing only for myself, I continue to adhere to my
belief that the ‘on occasions different from one another’ language [in the Armed Career Criminal
Act] was not meant to encompass the conduct in this case,” and that if a defendant’s convictions
were a part of one continuous crime spree they should be treated as one predicate offense.); United
States v. Brady, 

, 670, 672 (6th Cir. 1993) (en banc) (Martin, J., dissenting, and joining
Judge Jones’s dissent arguing that “Congress’ comments plainly presuppose that the Act is intended
to apply to only incorrigible, habitual criminals or, as the Second Circuit in Towne stated, to
‘recidivists . . . who have engaged in violent criminal activity on at least three separate occasions,
and not individuals who happen to acquire three convictions as a result of a single criminal
episode.’” 

(quoting United States v. Towne, 

, 891 (2d Cir.1989)).”).
Nevertheless, with due respect to PETA, I wish to kick the horse once more. This time, at least with
respect to the Guidelines, my comments have some renewed significance.
        First, though, with regard to my continued disagreement with this Court’s precedent, I
believe that we have reached the point where there are few, if any, circumstances in which we would
find that a defendant’s previous crimes are related for purposes of the Guidelines or the Armed
Career Criminal Act. Under the Armed Career Criminal Act, our case law concludes that two
offenses are separate predicate offenses if “it is possible to identify an endpoint between the two
offenses.” United States v. Carnes, 

, 955-56 (6th Cir. 2002) (holding that the burglary
of two adjacent homes, one immediately following the other, were separate predicate offenses
because the defendant had to leave one residence to enter the other). The standards under the
Application Notes to section 4A1.2(a)(2) under the Guidelines set forth a standard similar to the one
for our review under the Armed Career Criminal Act. U.S. Sentencing Guidelines Manual § 4A1.2,
Application Note 3. In this case, Martin stole four cars in twenty-three days using the same modus
operandi — using a fake drivers license to secure permission for a test drive of a new automobile
and then stealing it. The Court’s opinion points out that Martin has the burden of proving that the
thefts were part of a “single common scheme or plan,” which he could sustain by establishing that
“his crimes were jointly planned or that the commission of one entailed the other.” United States
v. Irons, 

, 638-39 (6th Cir. 1999).
         I do agree that “offenses are not necessarily related merely because they were committed
within a short period of time,” United States v. Horn, 

, 615 (6th Cir. 2004), but I fear
that, as Judge Jones predicted, the inquiry in these cases has become “so narrow that it now exists
only as a nebulous concept.” 

(Jones, J., dissenting). We have reached the
point, I believe, that only truly simultaneous crimes — which rarely, if at all, exist — or those
crimes with explicit evidence that they were planned together, will render offenses “related.” I
believe that this approach contravenes Congress’s intent to enhance the punishment of those habitual
and incorrigible offenders who continue to commit crimes over extended periods of time. By
judicially broadening the category of those crimes that are not considered related, the Guidelines
often have the effect of aggregating offenses occurring within a short period of time and that any
reasonable person would consider related, and leading to greater and often excessive punishments.
No. 04-6428                United States v. Martin                                                               Page 16


Provisions such as these have led to, in no small part, the problem of overpunishment in our system
of criminal justice.
        In fact, at oral argument counsel for the United States was asked if he could explain to the
Court what types of offenses or common planning the government would concede to be related for
the purposes of sentencing. Counsel had no idea. Instead, counsel spoke of such sophisticated
planning that it believes is required under our case law that, in my opinion, only two types of
criminals would be able to benefit from it: (1) perhaps a white collar criminal who keeps detailed
records of the entire plan or (2) the James Bond movie villain, who prior to carrying out some grand
scheme of world domination/annihilation, feels compelled to explain to anyone who will listen and1
in great detail (with intermittent villainous guffaws), each of the steps necessary to achieve his plan.
         It seems to me that we apply the antithesis of common sense in these cases. The defendant
was addicted to drugs. In order to feed his habit, he stole four cars in the exact same way over a
short three week period. Any reasonable observer would consider, under any dictionary definition,
these crimes to be related. Instead of applying logic and common sense, our Court’s precedent
seems to require us to look for reasons why these crimes are not related. We end up coming up with
reasons like these: Martin drove the cars to different buyers and the thefts took place in two different
states. Holmes did write that “[t]he life of the law has not been logic: it has been experience.” The
Common Law 1 (1881); see also United States v. O’Neill, — F.3d —, 

, at *5 (7th
Cir. Feb. 10, 2006) (Posner, J.) (“I know that the life of the law has not been logic, but logic does
have its claim, which in this case seem to me compelling.”). But, that doesn’t mean we shouldn’t
use a little common sense now and again. See Koons Buick Pontiac GMC, Inc. v. Nigh, 

, 65 (2004) (Stevens, J., concurring) (“Thus we cannot escape this unambiguous statutory
command by proclaiming that it would produce an absurd result. We can, however, escape by using
common sense.”).
        My point, now, however, does have renewed relevance. In United States v. Booker, 

(2005), of course, the Supreme Court invalidated the mandatory use of the Federal Sentencing
Guidelines and the remedial opinion declared them “effectively advisory.” We have stated that
“[o]nce the appropriate advisory Guideline range is calculated, the district court throws this
ingredient into the section 3553(a) mix.” United States v. McBride, 

, 476 (6th Cir.
2006); 18 U.S.C. § 3553. Prior to Booker, sentences outside of the Guideline range were severely
limited; now, “with greater latitude” a “district court need only consider [the Guideline range] along
with its analysis of the section 3553(a) factors.” 

section 3553(a) is the focal point, and the Guidelines sentence is merely advisory,
the fact that the district court calculated Martin’s criminal history score to be seven based on its
separate counting of his four car thefts, is “not the end of the sentencing inquiry; rather, it is just the

         1
        See also Austin Powers: International Man of Mystery (New Line Cinema 1997).
DR. EVIL:       Scott, I want you to meet Daddy’s nemesis, Austin Powers.
SCOTT EVIL: Why are you feeding him? Why don’t you just kill him?
DR. EVIL:       In due time.
SCOTT EVIL: But what if he escapes? Why don’t you just shoot him? What are you waiting for?
DR. EVIL:       I have a better idea. I’m going to put him in an easily-escapable situation involving an
                overly-elaborate and exotic death.
SCOTT EVIL: Why don’t you just shoot him now? Here, I’ll get a gun. We’ll just shoot him. Bang! Dead. Done.
DR. EVIL:       One more peep out of you and you’re grounded. Let’s begin.
         Prior to this exchange and then again following it, Dr. Evil describes in great detail the separate crimes
necessary to achieve his plan for world domination. Thus, if our Government ever does find Dr. Evil (or chooses to
prosecute him despite his recent decision to be “less evil,” see Austin Powers in Goldmember (New Line Cinema 2002)),
he will be one of the few, if any, criminal defendants, able to argue, consistent with this Circuit’s precedent, that all of
his various crimes were “related” for purposes of the Guidelines.
No. 04-6428           United States v. Martin                                                 Page 17


beginning.” Id.; see also United States v. Mickelson, 

, 1055 (8th Cir. 2006) (“As we
recognized in United States v. Haack, 

, 1002-03 (8th Cir. 2005), calculation of the
appropriate guideline sentence is only the first step in sentencing decisions under Booker, for the
court must also consider the § 3553(a) factors before making its ultimate determination.”). Section
3553(a) instructs district courts to impose “a sentence sufficient, but not greater than necessary, to
comply with the purposes” set forth in section 3553(a). Now, although the calculation of Martin’s
criminal history score under the Guidelines was seven and led to a sentencing range of 168 to 210
months imprisonment, the district court is not bound to adhere to the Guideline range. A district
court’s explicit textual responsibility is to impose “a sentence sufficient, but not greater than
necessary to comply with the purposes” set forth in section 3553(a). See also United States v.
Foreman, --- F.3d ----, 

, *5 (6th Cir. 2006).
        Appellate courts then review sentences for reasonableness — reasonableness in light of the
factors set forth in section 3553(a), but also in light of whether the district court complied with its
own textual responsibility to impose “a sentence sufficient, but not greater than necessary to
comply” with these purposes. 

cases, and I refrain from opining as to whether
Martin’s is one, a district court may conclude that the criminal history category overstates the
severity of the defendant’s criminal history or that a lower sentence would still comply with and
serve the mandates of section 3553(a). That is, a district court may look beneath the specific
criminal history score and determine whether Martin’s four car thefts merit the increased sentence
that the Guidelines suggest. In such circumstances, there is nothing that would preclude a
Guidelines sentence from being declared unreasonable. If the district court determines that section
3553(a) does not permit it to impose the Guideline-recommended sentence based on an over-inflated
significance attributed to Martin’s criminal history, this Court will later review that decision for
reasonableness.
       With these observations, I concur in the Court’s opinion.