United States Court of Appeals
                            For the Eighth Circuit
                        ___________________________

                                No. 13-1189
                        ___________________________

                             United States of America,

                        lllllllllllllllllllll Plaintiff - Appellee,

                                            v.

                                 James N. Coppock,

                      lllllllllllllllllllll Defendant - Appellant.
                                       ____________

                     Appeal from United States District Court
                      for the District of Nebraska - Omaha
                                 ____________

                            Submitted: January 15, 2014
                             Filed: September 2, 2014
                                  ____________

Before WOLLMAN, COLLOTON, and GRUENDER, Circuit Judges.
                       ____________

COLLOTON, Circuit Judge.

      James Coppock, a sex offender subject to the requirements of the Sex Offender
Registration and Notification Act (“SORNA”), entered a conditional guilty plea to a
charge of failing to register and update his sex offender registration with Nebraska
officials, in violation of 18 U.S.C. § 2250(a). He appeals the district court’s1 denial
of his motion to dismiss the indictment, arguing that his conviction under § 2250(a)
is unconstitutional. Coppock argues principally that Congress lacked authority under
Article I of the Constitution to impose SORNA’s registration requirement on him.
In light of the Supreme Court’s recent decisions in United States v. Comstock, 

(2010), and United States v. Kebodeaux, 

(2013), concerning
the Necessary and Proper Clause of Article I, we conclude that Congress acted within
its power. We therefore affirm the judgment.

                                          I.

       Coppock was convicted in 1990 by a military court of carnal knowledge and
kidnaping of a minor. In February 1997, Coppock was released on military parole
and came under the supervision of the United States Probation Office in the District
of Nebraska until his parole expired in March 2009. In November 2009, Coppock
signed an acknowledgment of his obligations to register as a sex offender and to keep
that registration up to date. And in December 2009, Coppock filed a form with the
State of Nebraska’s sex offender registry to notify the State that he was moving from
Blair, Nebraska, to Pasay City, Philippines.

      Subsequent investigation by law enforcement officials revealed that Coppock
never traveled to the Philippines but rather moved to Omaha, Nebraska, and worked
for several employers, without notifying the State of Nebraska of these events.
Coppock was arrested on May 7, 2012, and a grand jury charged him on May 22,
2012, with knowingly failing to register and update his sex offender registration with
Nebraska authorities as required by SORNA. See 18 U.S.C. § 2250(a).


      1
       The Honorable Joseph F. Bataillon, United States District Judge for the
District of Nebraska, adopting the findings and recommendation of the Honorable
F.A. Gossett, III, United States Magistrate Judge for the District of Nebraska.

                                         -2-
      SORNA, enacted in July 2006, “requires those convicted of certain sex crimes
to provide state governments with (and to update) information, such as names and
current addresses, for inclusion on state and federal sex offender registries.”
Reynolds v. United States, 

, 978 (2012); see 42 U.S.C. § 16913.
Congress delegated to the Attorney General the authority to determine whether and
to what extent SORNA’s requirements apply to sex offenders who, like Coppock,
were convicted of their underlying sex crimes before SORNA’s enactment. 42 U.S.C.
§ 16913(d). The Attorney General, exercising that authority, declared in 2007 that
SORNA did apply to such offenders. See 

.

      Coppock moved to dismiss the indictment, raising several constitutional
challenges to the application of SORNA’s registration requirements. Adopting the
findings and recommendation of a magistrate judge, the district court denied the
motion, and Coppock entered a conditional guilty plea. Coppock appeals the district
court’s denial of his motion to dismiss, and we consider the matter de novo. See
United States v. Waddle, 

, 1029 (8th Cir. 2010).

                                          II.

        Federal law makes it a crime for a sex offender convicted under federal law to
fail to register or update a registration as required by SORNA. 18 U.S.C. § 2250(a).
SORNA, in turn, requires a sex offender to register in certain jurisdictions and to
update his registration after each change of residence or employment. 42 U.S.C.
§ 16913. These provisions took effect after Coppock committed his sex offense and
after he was convicted, but while he was still on parole under his sentence for the
offense. Coppock argues that Congress lacked authority to impose the registration
requirements and to apply criminal sanctions under those circumstances. Coppock
was not convicted for failing to register after traveling in interstate commerce, see 18
U.S.C. § 2250(a)(2)(B), so our precedents upholding the constitutionality of a
prosecution under § 2250(a) in that context do not apply. See United States v.

                                          -3-
Howell, 

, 713-17 (8th Cir. 2009); United States v. May, 

,
921-22 (8th Cir. 2008).

       The question presented is whether Congress had authority, under the Military
Regulation and Necessary and Proper Clauses of Article I, see U.S. Const. art. I, § 8,
cls. 14, 18, to impose SORNA’s registration requirements on a federal sex offender
who was on parole for his federal sex offense at the time of SORNA’s enactment, and
to enforce those requirements through the criminal prohibition of § 2250(a).
Jurisprudence under the Necessary and Proper Clause, of course, dates to the earliest
decisions of the Supreme Court, including Chief Justice Marshall’s famous opinion
in McCulloch v. Maryland, 

(1819). The Supreme Court recently opined
on the Clause’s scope as applied to federal prisoners in United States v. Comstock,

(2010), and addressed the Clause’s application to Congress’s power to
prescribe rules for the regulation of the land and naval forces in United States v.
Kebodeaux, 

(2013). These decisions guide our analysis. We also
must be mindful that “[d]ue respect for the decisions of a coordinate branch of
Government demands that we invalidate a congressional enactment only upon a plain
showing that Congress has exceeded its constitutional bounds.” United States v.
Morrison, 

, 607 (2000).

       In Comstock, the Supreme Court concluded that Article I authorizes Congress
to enact a civil-commitment statute providing for detention of “a mentally ill, sexually
dangerous federal prisoner beyond the date the prisoner would otherwise be

. The Court identified several considerations that informed
its holding. Most relevant to our inquiry is the Court’s conclusion that the civil-
commitment scheme was “reasonably adapted to Congress’ power to act as a
responsible federal custodian” over those who have violated federal criminal laws.

(internal quotation and citation omitted). In examining the connection
between the civil-commitment statute and Congress’s Article I powers, the Court
explained:

                                          -4-
      Congress has the implied power to criminalize any conduct that might
      interfere with the exercise of an enumerated power, and also the
      additional power to imprison people who violate those (inferentially
      authorized) laws, and the additional power to provide for the safe and
      reasonable management of those prisons, and the additional power to
      regulate the prisoners’ behavior even after their release.

(emphasis added). After discussing other considerations, including “the
breadth of the Necessary and Proper Clause,” “the long history of federal
involvement” in the civil commitment of federal prisoners, and “the statute’s
accommodation of state interests,” the Court concluded that the civil-commitment
scheme was a necessary and proper means for Congress to exercise its Article I
powers. 

      In Kebodeaux, the Court decided that Congress had authority under Article I
to impose SORNA’s registration requirements on an offender who had committed a
sex offense while serving in the military:

      [U]nder the authority granted to it by the Military Regulation and
      Necessary and Proper Clauses, Congress could promulgate the Uniform
      Code of Military Justice. It could specify that the sex offense of which
      Kebodeaux was convicted was a military crime under that Code. It
      could punish that crime through imprisonment and by placing conditions
      upon Kebodeaux’s release. And it could make the civil registration
      requirement at issue here a consequence of Kebodeaux’s offense and
      

. Kebodeaux establishes, therefore, that Congress has some degree
of authority to apply SORNA to federal sex offenders based on violations of the
Uniform Code of Military Justice, and to punish violations of SORNA with criminal
penalties under § 2250(a).



                                        -5-
      The government’s assertion of power in this case goes a step beyond
Kebodeaux. There, although SORNA was enacted after the sex offender was released
from federal custody, the Court relied on the preexisting registration requirements of
the Wetterling Act of 1994: “[A]s of the time of Kebodeaux’s offense, conviction
and release from federal custody,” 

the Court explained, the Wetterling
Act imposed federal registration requirements similar to those that Congress later
enacted in SORNA. The Court reasoned that “the Necessary and Proper Clause
authorized Congress to modify the requirement” already applicable to the offender
through the Wetterling Act. 

contrast, Coppock’s sex offense and conviction occurred prior to both
the enactment of SORNA and the enactment of the Wetterling Act. As applied to
Coppock, then, SORNA cannot be justified as a necessary and proper modification
of federal registration requirements already in place at the time of Coppock’s offense
and conviction. Nor can the government rely in Coppock’s case on the idea that “[a]
servicemember will be less likely to violate a relevant military regulation if he knows
that, having done so, he will be required to register as a sex offender years into the
future.” 

(Roberts, C.J., concurring in the judgment). Coppock could not
have known about the later-enacted registration requirements of the Wetterling Act
and SORNA when he violated military regulations.

       Nonetheless, while Kebodeaux held that the conditions in that case were
sufficient to authorize congressional action under Article I, the Court did not hold that
Congress’s power to require registration by federal sex offenders was limited to
offenders who violated military regulations after the Wetterling Act came into effect.
Coppock was still on federal parole when the Wetterling Act and SORNA were
enacted; he was not unconditionally released. As to that scenario, there are
suggestions in Comstock and Kebodeaux that legislation imposing sex offender
registration requirements is authorized by the Necessary and Proper Clause.



                                          -6-
        Comstock strongly affirmed Congress’s “power to act as a responsible federal
custodian” of those, like Coppock, who have violated federal law—even to the point
of requiring potentially indefinite civil 

. The federal
government, the Court declared, “has the constitutional power to act in order to
protect nearby (and other) communities from the danger federal prisoners may pose.”

If Congress may extend a civil-commitment system to federal prisoners,
and may thereby refuse to release some prisoners at all in order to avert reasonably
foreseeable danger to other citizens, then it seems to follow that Congress may apply
to federal prisoners a less restrictive registration system that is designed to protect
others from the risk of recidivism after a sex offender is released.

         The Court in Kebodeaux similarly declared that “‘it is entirely reasonable for
Congress to have assigned the Federal Government a special role in ensuring
compliance with SORNA’s registration requirements by federal sex
offenders—persons who typically would have spent time under federal criminal

(quoting Carr v. United States, 

, 452
(2010)). The government’s interest in keeping track of former federal prisoners to
prevent further crimes applies with equal force to a pre-Wetterling Act offender who
is still on parole for a federal sex offense as it does to one who commits his offense
after the Act’s passage. And Justice Alito, concurring in the judgment in Kebodeaux,
deemed it necessary and proper for Congress to require registration of members of the
military who are convicted of a qualifying sex offense in federal court, because the
exercise of military jurisdiction may supersede state prosecutions and thereby create
a gap in the laws intended to maximize the registration of sex offenders. 

09 (Alito, J., concurring in the judgment). The same gap-filling rationale presumably
would apply to a parolee who was prosecuted by federal authorities for a sex offense
before a federal registration requirement was developed.

     For these reasons, we think the Court’s most recent applications of the
Necessary and Proper Clause counsel that the SORNA registration requirements and

                                         -7-
criminal sanctions for noncompliance are constitutional as applied to Coppock.
Significantly, this is not a case in which the government seeks to punish an offender
for violating restrictions imposed on him “years after [his] unconditional release,”
pursuant to an expansive claim of a nonexistent federal police power. 

(Roberts, C.J., concurring in the judgment). Our decision here applies only to a sex
offender who—at the time the registration requirements came into effect—was under
federal parole supervision based on a conviction under federal law, and thus remained
in a “special relationship with the federal government.” 

(majority
opinion) (internal quotation omitted).

       Coppock’s alternative contentions that Congress unconstitutionally delegated
legislative power by authorizing the Attorney General to determine SORNA’s
retroactive effect, see 42 U.S.C. § 16913(d), and that his conviction under 18 U.S.C.
§ 2250(a) amounts to ex post facto punishment for his pre-SORNA sex offense, are
foreclosed by precedent. United States v. Kuehl, 

, 920 (8th Cir. 2013);
United States v. Voice, 

, 879 (8th Cir. 2010).

                                  *      *       *

      The judgment of the district court is affirmed.
                     ______________________________




                                         -8-