United States Court of Appeals
                            FOR THE EIGHTH CIRCUIT
                                   ___________

                                   No. 02-1966
                                   ___________

United States of America,              *
                                       *
             Plaintiff-Appellee,       *
                                       * Appeal from the United States
      v.                               * District Court for the District
                                       * of Nebraska.
Jose Espino,                           *
                                       *
             Defendant-Appellant.      *
                                  ___________

                             Submitted: October 8, 2002

                                  Filed: January 9, 2003
                                   ___________

Before JOHN R. GIBSON, MURPHY, and SMITH, Circuit Judges.
                           ___________

SMITH, Circuit Judge.

       Jose Espino appeals his conviction of conspiracy to distribute and possess with
intent to distribute more than 500 grams of methamphetamine.1 Espino challenges the
sufficiency of the evidence used to convict him. He also contends that the District




      1
       21 U.S.C. § 846 (conspiracy to distribute methamphetamine) and 21 U.S.C.
§841 (a)(1) and (b)(1) (possession with intent to deliver methamphetamine of 500
grams or more).
Court2 erred in allowing his wife to testify against him in violation of the spousal
privilege and in allowing lay witnesses to testify about the weight and amount of the
drugs distributed by Espino. We affirm.

                                            I.
        Espino’s April 27, 2001, arrest stemmed from his alleged participation in the
sale and distribution of methamphetamine for approximately four years beginning in
July 1997. The government built its case against Espino upon the testimony of six
witnesses, including Espino’s wife, Brandy Goatley, who testified in exchange for the
possibility of reduced sentences in their own drug prosecutions. These witnesses
testified that they either bought from or were delivered methamphetamine by Espino
or Goatley during the four years of their distribution operation. Following trial, a jury
convicted Espino of the charge and found that the amount of methamphetamine
involved was 500 grams or more. The District Court sentenced Espino to 235 months’
imprisonment on March 15, 2002.

                                           II.
                              Sufficiency of the Evidence
       First, we address whether sufficient evidence exists to support the jury’s
verdict. “The standard of review of an appeal concerning sufficiency of the evidence
is very strict, and the verdict of the jury should not be overturned lightly." United
States v. Crossland, 

, 913 (8th Cir. 2002) (quoting United States v.
Burks, 

, 151 (8th Cir.1991)). In reviewing the sufficiency of the
evidence on appeal, the court views the evidence in the light most favorable to the
government, resolving evidentiary conflicts in favor of the government, and accepting
all reasonable inferences drawn from the evidence that support the jury's verdict.
United States v. Erdman, 

, 389 (8th Cir.1992). We will reverse only if


      2
        The Honorable Richard G. Kopf, United States District Court Judge for the
District of Nebraska.

                                          -2-
no reasonable jury could have found the accused guilty beyond a reasonable doubt.
United States v. Harmon, 

, 892 (8th Cir.1999).

       Espino concedes that the evidence proves that he independently sold and
distributed methamphetamine. However, he argues that none of the admissible
testimony3 proves that he conspired with anyone to commit this crime. Furthermore,
he argues that these witnesses were biased in that they each received a substantial
benefit from the government to testify that there was a conspiracy.

       To establish that a defendant conspired to distribute drugs under 21 U.S.C. §
846, the government must prove: (1) that there was a conspiracy, i.e., an agreement
to distribute the drugs; (2) that the defendant knew of the conspiracy; and (3) that the
defendant intentionally joined the conspiracy. United States v. Jones, 

,
1267 (8th Cir. 1996); United States v. Westbrook, 

, 338 (8th Cir. 1998).
Tacit understanding – as opposed to mere presence at and knowledge of an intended
drug sale – will suffice; a formal agreement is unnecessary. 

States
v. Shoffner, 

, 1433-34 (8th Cir. 1995)). The existence of a conspiracy
may be proved by either direct or circumstantial evidence. United States v. Jenkins,

, 1287 (8th Cir. 1996). Evidence of association or acquaintance, though
relevant, is not enough by itself to establish a conspiracy. United States v. Ivey, 

, 384 (8th Cir. 1990).

       The evidence in this case supports the jury’s finding of Espino’s involvement
in a conspiracy to distribute methamphetamine. With the exception of Goatley, the
government’s witnesses testified that they either bought or were distributed
methamphetamine from Goatley or Espino from the couple’s home during the years


      3
        In his second argument here, Espino asserts that Goatley’s testimony was
inadmissible under Nebraska’s and the Federal Rules of Evidence’s spousal privilege.
This issue is addressed below.

                                          -3-
of the couple’s drug operation.4 Melanie Berlie testified that she had been purchasing
methamphetamine from Goatley since 1996, and that she first met Espino at Goatley’s
home in 1998. Berlie testified that Goatley told her that it would be possible to buy
drugs from Espino, and that “[i]t was just one or the other, whoever was there or
whichever one was doing it.” Berlie purchased methamphetamine three or four times
a week from the couple at their residence. She purchased the drugs half the time from
Goatley and half the time from Espino. Berlie further stated that if Goatley or Espino
did not have the drugs when she wanted them, “[o]ne of them would pick it up and
one of them would bring it to me.”

      Penelope Woodward testified that she met Espino at a bar in Grand Island,
Nebraska. In the year thereafter, she bought methamphetamine from Espino at the bar,
her home, or Espino’s and Goatley’s home. She testified that Espino would come by
her home as often as every other day to sell or distribute methamphetamine to her.

      Joe Olivo, a twenty-year methamphetamine user, testified that he first bought
drugs from Espino in the winter of 1998. Olivo said he bought methamphetamine
from Espino four or five times, and that he resold some of it.

      Cassandra Brunick (“Cassandra”) testified that she first bought drugs from
Goatley in late 1997 and met Espino through Goatley in 1998. Cassandra began
buying methamphetamine from Espino in April 1998, and continued through
February 1999. She purchased methamphetamine from Espino through Goatley once
or twice a week. Cassandra testified that she would go alone or with her husband,
Steve Brunick (“Steve”), to purchase the drug from Espino at a trailer where Espino
and Goatley lived, and later at a house on Charles Street where Espino, Goatley, and



      4
        Espino and Goatley met in 1997, began living together in 1998, and married
in either April or May of 1999.

                                         -4-
others were living. Although she initially purchased methamphetamine mostly from
Goatley, she later purchased up to half from Espino.

       Steven Brunick testified that he and his wife first met Espino through Goatley
during the summer of 1998. Steve made his first purchase from the couple in
November 1998 at Espino’s and Goatley’s trailer, and continued to buy
methamphetamine one or two times a week from Espino and Goatley until the end of
January 1999. Steve testified that he would resell the narcotic. Steve derived his
entire financial support from this enterprise during the period from February 1998 to
January 1999.

       Lastly, Goatley testified that she and Espino first lived together in a trailer on
Sylvan Street, then at a trailer at Mobile Manor. Later, they lived in a house on
Charles Street with Michelle and Joe Olivo. Goatley testified that she had been selling
and using methamphetamine for nine years, and that she sold methamphetamine from
the residence at Mobile Manor. While living at Mobile Manor, Goatley saw a person
named “Chappo” give Espino methamphetamine on two occasions. During one of
these exchanges, Goatley overheard Chappo and Espino arguing over
methamphetamine “because Chappo had an ounce in the house and had said that Jose
had stole it or something.”

       Goatley also testified that while living at the Charles Street residence, she knew
Espino was obtaining methamphetamine from a person named “Genaro.” Genaro
would take methamphetamine to the couple’s house in one-quarter-pound amounts
once a week during a one- to two-month period between Christmas of 1998 and
March or April of 1999. Goatley testified that she and Espino sold the drugs to Berlie
and the Brunicks, and that she was aware that Espino’s customers would page him to
order drugs and he would leave their residence at Mobile Manor to acquire the drugs.
Finally, Goatley testified about a drug deal that occurred in mid-1999. She bought a



                                          -5-
quarter-pound of methamphetamine from Jaime Torres in June and gave it to Espino.
On June 3, 1999, Goatley was arrested during a police drug operation.

       Even if Goatley should be excluded as a witness, as Espino contends, the
remaining witnesses’ testimony provide more than substantial evidence in support of
the jury’s verdict. Each one testified that Espino and Goatley cooperatively operated
their drug enterprise out of their home, and that they could be contacted for the
purchase and delivery of methamphetamine separately or together. A purchase from
either Espino or Goatley could result in a delivery from the other. These facts indicate
an agreement between the two to maintain an ongoing enterprise. Furthermore, Steve
Brunick and Olivo testified that they resold much of the methamphetamine bought
from Espino, thus extending the conspiracy to distribute and possess with intent to
distribute methamphetamine.

      With Goatley’s testimony, the conspiracy evidence becomes overwhelming.
Her testimony provides additional direct proof that she and Espino jointly bought and
sold methamphetamine from their household. Goatley testified that she introduced
Espino to several of the customers who had previously bought only from Goatley.
The jury could reasonably conclude, based upon her testimony, that Espino conspired
with Goatley, other witnesses, and the drug suppliers to sell methamphetamine.

       The evidence is similarly cogent with respect to the drug quantities involved
in the transactions. Based upon the proof submitted, Espino’s drug sales supplied
amounts far in excess of the charged 500 grams, including over 1,200 grams to Berlie,
616 grams to Woodward, 1,232 grams to Cassandra Brunick, and 896 grams to Steve
Brunick. Several witnesses testified that they not only bought methamphetamine from
Espino but also resold it. We hold that sufficient evidence supports the jury’s verdict.

       We also note that Espino challenges the credibility of the witnesses. He argues
that the veracity of these witnesses should be questioned because they potentially

                                          -6-
received the substantial benefit of a reduced sentence in exchange for testifying as to
the existence of a conspiracy. This allegation is without merit. In reaching its verdict,
the jury exercised its prerogative to credit the testimony of the government's
witnesses or discount it. That one or more of these witnesses were members of the
scheme does not undermine the verdict. United States v. Slaughter, 

, 628
(8th Cir. 1997); United States v. Witschner, 

, 843 (8th Cir. 1980); see
also United States v. Cunningham, 

, 222 (8th Cir.1996). Certainly,
whether a witness has a plea agreement with the government, and whether a witness
will receive a sentence reduction in exchange for his testimony, is relevant in
assessing the witness's credibility. United States v. Roan Eagle, 

, 443-44
(8th Cir.1989). The jury, however, is always the ultimate arbiter of a witness's
credibility, and this Court will not disturb the jury's findings in this regard. 

.

                                         III.
                                 Spousal Privilege
      Espino next argues that the District Court erred in allowing Goatley to testify
because Espino did not consent to her testimony. Specifically, Espino cites
Nebraska’s spousal-privilege statute, Neb. Rev. Stat. § 27-505(2)5, and Federal Rule
of Evidence 5016. He argues that this statute, which precludes testimony by a spouse


      5
        Neb. Rev. Stat. § 27-505(2) provides: “During the existence of a marriage, a
husband and wife can in no criminal case be a witness against the other. This
privilege may be waived only with the consent of both spouses.”
      6
          Federal Rule of Evidence 501provides:

            Except as otherwise required by the Constitution of the United
      States or provided by Act of Congress or in rules prescribed by the
      Supreme Court pursuant to statutory authority, the privilege of a
      witness, person, government, State, or political subdivision thereof shall
      be governed by the principles of the common law as they may be

                                           -7-
when the privilege is claimed by the defendant, when read in concert with Rule 501,
should exclude Goatley’s testimony. We review admission of testimony under an
abuse of discretion standard. United States v. Bad Wound, 

, 1076 (8th
Cir. 2000).

       Espino claims that federal courts must look to the forum state’s law on
privilege to decide when a spouse may testify. For authority, Espino cites Serra v.
Michigan Department of Corrections, 

(6th Cir. 1993). Espino’s reliance
on Serra to support his claim is misplaced.7 The court in Serra merely applied state
law in the context of a habeas corpus review of a state court criminal conviction.

       Neither does Rule 501 mandate the approach Espino suggests. The plain
language of the rule states that issues of privilege “shall be governed by the principles
of the common law as they may be interpreted by the courts of the United States in


       interpreted by the courts of the United States in the light of reason and
       experience. However, in civil actions and proceedings, with respect to
       an element of a claim or defense as to which State law supplies the rule
       of decision, the privilege of a witness, person, government, State, or
       political subdivision thereof shall be determined in accordance with
       State law.
       7
         In Serra, the Sixth Circuit Court of Appeals discussed, in part, whether the
habeas petitioner’s Sixth Amendment right to assistance of counsel was violated
where the petitioner’s prior counsel initially represented the petitioner and his wife
prior to the criminal trial. In the discussion, the court of appeals noted that the district
court referenced the Michigan statute placing the right to prevent a spouse’s
testimony in the hands of the defendant. The defendant in Serra was tried in
Michigan state court which followed state law, and it was only the habeas corpus
petition that was addressed in federal court. The federal district court and court of
appeals did not adopt the approach asserted by Espino here; rather, those courts
merely recognized, without commenting further, that the Michigan statute in Serra
would have required the defendant in his state-court criminal trial to give his consent
before his spouse testified.

                                            -8-
the light and reason of experience.” Furthermore, the rule specifically provides that
“in civil actions and proceedings, with respect to an element of a claim or defense,”
the privilege issue “shall be determined in accordance with State law.” Put simply,
federal courts follow the federal common law regarding privileges in federal criminal
proceedings. The Supreme Court in Trammel v. United States, 

, 47
(1980), noted that Congress, in rejecting a specific set of rules for various privileges
and enacting Rule 501, “manifested an affirmative intention not to freeze the law of
privilege.” The Court further noted that Congress’s purpose was to allow the federal
courts to develop rules on a case-by-case basis and “to leave the door open to
change.” 

courts are not bound by a mechanistic approach for
applying the privilege in criminal cases.

      Espino’s privilege claim has no merit under federal common law. Federal
courts recognize two distinct marital privileges: the marital confidential
communications privilege and the adverse spousal testimony privilege. Bad 

. Neither form of the privilege can be properly invoked in this case.
Under the marital confidential communications privilege, it is well settled that the
communications to which the privilege applies have been limited to utterances or
expressions intended by one spouse to convey a message to another. United States v.
Smith, 

, 1079 (8th Cir. 1976). Though this privilege has been expanded
to encompass more than mere conversations and writings, invocation of the privilege
requires the presence of at least a gesture that is communicative or intended by one
spouse to convey a message to the other. 

no such facts.

       The District Court’s order on Espino’s motion in limine precluded the
government from introducing evidence of any conversations between Espino and
Goatley during the course of the marriage except for conversations that took place in
the presence of third parties. The District Court denied the remainder of the motion
in limine, ruling that the government could introduce evidence through Goatley’s
testimony adverse to Espino if it involved Espino’s conduct rather than his

                                          -9-
communications. Clearly, the District Court properly preserved the marital
confidential communications privilege by prohibiting Goatley from testifying about
personal conversations and communications between the couple outside the presence
of third parties, and by ruling that Goatley could testify as to Espino’s conduct so
long as it did not involve a communicative gesture. Here, Espino points to no
evidence regarding a communicative gesture about which Goatley testified; rather,
Goatley’s testimony focused on her observations of Espino’s conduct and actions
involving his drug trade before and during the course of their marriage. As such, the
District Court did not err in admitting Goatley’s testimony under the marital
confidential communications privilege.

       Under the adverse spousal testimony privilege, an individual “may be neither
compelled to testify nor foreclosed from testifying” against the person to whom he
or she is married at the time of trial. Bad 

(citing 

). The privilege, therefore, rests with the testifying spouse who may
waive the privilege without consent of the defendant spouse. 

the
Court traced the history of this spousal privilege. The Court concluded that the rule
as it previously existed (allowing only the defendant spouse to give consent for the
witness spouse to testify) would be modified to allow the witness-spouse alone to
have the privilege to refuse to testify adversely against his or her spouse. The Court
concluded that this modification promoted the public’s interest in marital harmony
without unduly burdening legitimate law-enforcement needs. 

. Furthermore, the Court noted that a witness-spouse’s agreement to testify after a
grant of immunity and assurances of lenient treatment does not render his or her
testimony involuntary. 

testimony viewed through the lens of
this privilege was not improper pursuant to the Court’s decision in Trammel, and the
District Court did not abuse its discretion in admitting the testimony.




                                        -10-
                                          IV.
                                     Drug Weight
        Finally, Espino argues that the District Court erred in admitting testimony of
lay witnesses concerning the weights and quantities of methamphetamine sold by
Espino because the witnesses’ testimony lacked adequate foundation.8 Espino
contends that while some of the drugs were actually weighed, the witnesses also
testified to amounts and weights of drugs that the witnesses only observed but did not
weigh themselves. As such, we must determine whether a lay witness having
extensive experience in the drug trade with this particular drug possesses the requisite
knowledge to testify accurately about the weight of the drugs without having actually
weighed each purchase. Admission of testimony is reviewed under an abuse of
discretion standard. Bad 

.

       Federal Rule of Evidence 602 requires that a witness have personal knowledge
of the matters about which he or she testifies, except in the case of expert opinions.9
Federal Rule of Evidence 701 allows lay opinion that "is limited to those opinions or
inferences which are (a) rationally based on the perception of the witness and (b)
helpful to a clear understanding of the witness' testimony or the determination of a
fact in issue."10 Rule 701 permits such testimony if it is based on "relevant historical

      8
        We note that Espino challenges only the weight of the methamphetamine, not
its identification.
      9
        Federal Rule of Evidence 602 “Lack of Personal Knowledge” provides in
pertinent part:

            A witness may not testify to a matter unless evidence is
      introduced sufficient to support a finding that the witness has personal
      knowledge of the matter. Evidence to prove personal knowledge may,
      but need not, consist of the witness’ own testimony.
      10
           Federal Rule of Evidence 701 provides:


                                         -11-
or narrative facts that the witness has perceived," Teen-Ed, Inc. v. Kimball Intern.,
Inc., 

, 403 (3rd Cir.1980), and if it "would help the factfinder determine
a matter in issue," Hurst v. United States, 

, 312 (8th Cir.1989). "While
the ordinary rule confines the testimony of a lay witness to concrete facts within his
knowledge or observation, the [c]ourt may rightly exercise a certain amount of
latitude in permitting a witness to state his conclusions based upon common
knowledge or experience." United States v. Oliver, 

, 264 (8th Cir. 1990)
(citing Batsell v. United States, 

, 262 (8th Cir.1954)). Lay opinion
testimony is admissible only to help the jury or the court to understand the facts about
which the witness is testifying and not to provide specialized explanations or
interpretations that an untrained layman could not make if perceiving the same acts
or events. See United States v. Peoples, 

, 641 (8th Cir. 2001); United
States v. Cortez, 

, 139-40 (8th Cir.1991); United States v. Figueroa-
Lopez, 

, 1244-45 (9th Cir.1997).

       The general application of Rule 701 indicates that a lay witness may testify
about facts within his or her range of generalized knowledge, experience, and
perception. Here, these witnesses, particularly Goatley, testified that they either
actually weighed the quantities of methamphetamine purchased from Espino, or
through their experience knew that the volume sold generally constituted a certain
weight of the drug. These lay witnesses testified based upon their experience. They
were not attempting to explain any technical or specialized information, and several
of them had actually used a scale to weigh the methamphetamine.



             If the witness is not testifying as an expert, the witness’ testimony
      in the form of opinions or inferences is limited to those opinions or
      inferences which are (a) rationally based on the perception of the
      witness, (b) helpful to a clear understanding of the witness’ testimony
      or the determination of a fact in issue, and (c) not based on scientific,
      technical, or other specialized knowledge within the scope of Rule 702.

                                         -12-
        The record contains ample evidence of the lay witnesses’s experience in the
drug trade and with assessing quantities of drugs. For example, Berlie testified that
she usually bought drugs in quantities of an ounce at a time and that the drugs she
received from Espino were weighed on a scale. Woodward said she first bought
“eight balls,” or an eighth of an ounce of the drug from Espino, but then later bought
amounts from a quarter of an ounce to one ounce. Woodward, who used and sold
drugs for three to four years, testified that she used a scale to weigh the amounts that
she bought and resold. During cross examination, Woodward described the scale as
a digital scale similar to that used by Espino for weighing drugs. Olivo, a twenty-year
methamphetamine user, testified that each of his purchases from Espino was for one
ounce, and the amounts were weighed on a scale by Olivo’s wife. Cassandra Brunick
testified that Espino weighed the methamphetamine that she bought from him, and
each purchase was one to two ounces. Steven Brunick testified that the first time he
purchased from Espino, Espino weighed and sold him one-half of an ounce of
methamphetamine. Steven bought methamphetamine from Espino at other times in
amounts from four to six ounces for resale. Goatley, who used and sold
methamphetamine for nine years, testified that she would normally weigh the
methamphetamine, but from experience also was able to determine approximate
weight by visual examination. While living at Mobile Manor, Goatley saw Espino
receive methamphetamine from a person named “Chappo” on two occasions. On each
of these occasions, Goatley saw Chappo provide Espino with two ounces. Finally, the
government noted that over the course of his dealings, Espino supplied far in excess
of 500 grams to the various witnesses who testified, including over 1,200 grams to
Berlie, 616 grams to Woodward, 1,232 grams to Cassandra Brunick, and 896 grams
to Steven Brunick.

      Espino cites United States v. Mehaffey, 

(6th Cir. 1995), for the
proposition that the government failed to establish beyond a reasonable doubt through
any credible evidence the amount of methamphetamine sold by Espino. However,
Mehaffey’s facts are easily distinguished. In Mehaffey, the District Court attributed

                                         -13-
900 grams of drugs to the defendant; however, in reaching this conclusion, the
District Court relied on conversion calculations detailed in a different case rather than
evidence presented in Mehaffey’s case to determine the volume and weight of the
distilled illegal substance. The Sixth Circuit Court of Appeals determined that
reliance on these calculations from prior case law was improper and, thus, the
prosecution failed to meet its burden of proof as to the amount of the illegal drug
distilled from the precursor drug. Clearly, Mehaffey does not apply. In this case, the
jury heard specific testimony from witnesses, who all had substantial experience in
the use and trade of illegal drugs, regarding the weight of the methamphetamine
Espino sold. Therefore, the District Court did not abuse its discretion in admitting this
testimony.

                                           V.
                                 Judicial Notice Motion
       As a final matter, separate from his appellate brief, Espino has filed a pro se
“Motion to Take Judicial Notice,” outlining twenty-six “judicially noticeable facts,”
requesting that this court appoint different appellate counsel and suspend the appeal
until new counsel can prepare additional appeal materials. Espino asserts that his
appellate counsel, who was also Espino’s second appointed trial counsel, was
ineffective at trial in a number of ways. For example, Espino claims that trial counsel
failed to properly assess and present various defenses at trial, failed to properly advise
Espino about the possible sentencing range if convicted, erred in notifying the
prosecution of a problem with the original indictment resulting in the filing of an
amended indictment that increased the punishment range, and failed to update Espino
about trial strategy and various filings prior to trial. Espino claims that had his trial
attorney provided correct advice prior to trial, he would have pleaded guilty to the
original indictment and would have received a “less severe” sentence. Espino now
requests that this court take judicial notice of these “judicially noticeable facts” and
suspend the appeal process until a new appellate attorney can be appointed to raise
these issues of claimed ineffective assistance of counsel in the direct appeal.

                                          -14-
       A criminal defendant does not have the absolute right to counsel of his own
choosing. Carey v. State of Minnesota, 

, 441 8th Cir. 1985); Williams
v. Nix, 

, 959 (8th Cir.1985). Furthermore, an indigent defendant has no
right to demand of a court that a particular attorney, or particular attorneys, be
appointed to represent him. 

of counsel is a matter
committed to the sound discretion of the trial court." Meyer v. Sargent, 

, 1114-1114 (8th Cir. 1988) (quoting Nerison v. Solem, 

, 418 (8th
Cir.1983), cert. denied, 

(1984) and 

(1984)).

       After the District Court entered judgment, Espino filed a pro se notice of
appeal. He then requested that the District Court appoint appellate counsel to handle
this appeal. The District Court directed the request to this court, and on April 17,
2002, we appointed Attorney Loenard P. Vyhnalek, Espino’s trial counsel, to
continue Espino’s case on appeal. Given this history, we deny Espino’s request to
stay the proceedings and appoint new appellate counsel. The proper method to
challenge the effectiveness of counsel at trial and on appeal is in a petition for writ
of habeas corpus.

      Affirmed.

      A true copy.

             Attest:

                CLERK, U.S. COURT OF APPEALS, EIGHTH CIRCUIT.




                                         -15-