United States v. Nagell , 911 F.3d 23 ( 2018 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 17-1058
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    MICHAEL NAGELL,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MAINE
    [Hon. George Z. Singal, U.S. District Judge]
    Before
    Torruella, Lynch, and Barron,
    Circuit Judges.
    Luke S. Rioux and Rioux, Donahue, Chmelecki & Peltier, LLC on
    brief for appellant.
    Benjamin M. Block, Assistant United States Attorney, and
    Halsey B. Frank, United States Attorney, on brief for appellee.
    December 19, 2018
    TORRUELLA, Circuit Judge.        A jury convicted Defendant-
    Appellant Michael Nagell ("Nagell"), a registered sex offender, of
    knowingly failing to update his registration, in violation of
    18 U.S.C. § 2250(a).      At sentencing, the district court imposed a
    two-level obstruction of justice enhancement pursuant to U.S.S.G.
    § 3C1.1, after finding that Nagell had committed perjury when he
    testified at trial in his own defense.             The district court then
    sentenced him to thirty months' imprisonment, at the middle of his
    Guidelines sentencing range ("GSR").             Nagell now challenges the
    district   court's    finding     of   obstruction      of     justice    and    the
    resulting sentencing enhancement.            We affirm.
    I.    Background
    In 2007, Nagell was convicted on two counts of coercion
    and enticement of a minor, in violation of 18 U.S.C. § 2422(b),
    and one count of traveling to engage in illicit sexual activity,
    in violation of 18 U.S.C. § 2423(b).             He was sentenced to sixty
    months   of    incarceration,     to   be    followed     by    eight    years   of
    supervised release.       As a mandatory condition of his release,
    under    the    Sex   Offender    Registration      and        Notification      Act
    ("SORNA"), Nagell became a registrant in the Maine Sex Offender
    Registry (the "Registry") upon his release from prison.
    Nagell was required to annually complete and return a
    "verification form" to the Registry.              With that form, he also
    needed to include a current passport photo and pay a twenty-five
    -2-
    dollar fee.   Additionally, if he changed his domicile, residence,
    employment, or school between verification cycles, Nagell had to
    notify local law enforcement within twenty-four hours of that
    change, and also file a "notice of change of information report"
    with the Registry within five days.1    Nagell acknowledged all of
    these requirements in writing during his initial registration as
    a sex offender, and received numerous reminders from his probation
    officers and case workers in the years that followed.
    Between 2012 and May 2015, Nagell's supervised release
    was twice revoked, and he received prison sentences for failing to
    comply with the conditions of his release, followed by additional
    periods of supervised release.   During this period of time, Nagell
    also filed several annual verification and change of information
    reports with the Registry.    Nagell's third period of supervised
    release began in July 2015.   As a condition of this third period
    of supervised release, he was placed in the Pharos House, a federal
    halfway house in Portland, Maine, which aims to facilitate the
    reintegration of convicts into society.
    1  There is a discrepancy in the record as to whether Nagell had
    to file his notice of change of information report with the
    Registry within three or five days after changing his domicile,
    residence, employment, or school, but the testimony at trial was
    that it was within five days and that issue is nevertheless
    immaterial in this case.
    -3-
    Following his placement at Pharos House, Nagell held
    several jobs.        Immediately after his arrival at Pharos House,
    Nagell's case manager, Kimberly Hartley ("Kim Hartley"), helped
    him apply to Single Source Staffing ("SSS"), a temporary employment
    agency.     SSS hired him.      In September 2015, SSS placed Nagell at
    Earle W. Noyes & Sons Moving Specialists, Inc. ("Noyes") and, in
    October 2015, at Emery-Waterhouse Company ("Emery-Waterhouse").2
    Between    October    2015   and    December    10,   2015,   Nagell   received
    concurrent SSS assignments at both Emery-Waterhouse and Noyes.               On
    December 21, 2015, Nagell informed his probation officer that he
    had been hired as a full-time employee by Noyes and that his prior
    employment with SSS (and consequently with Emery-Waterhouse) had
    ceased.3    From July 2015 to April 2016, the only Registry updates
    regarding employment changes were filed on December 28, 2015 and
    January     13,   2016,   and      listed    Emery-Waterhouse    as    Nagell's
    employer.
    Nagell's residency information also changed during this
    period.    In September 2015, he moved out of Pharos House and back
    into his pre-conviction residence in Bath, Maine.                 Although he
    notified his probation officer of his change of address, he did
    2  Between July 2015 and December 2015, Nagell was also employed
    by Allstate Cleaners and by a moving company named Bunzl, though
    not through SSS.
    3   Nagell worked full-time at Noyes until late April 2016.
    -4-
    not file the corresponding notice of change of information report
    with the Registry.      Consequently, in November 2015, the Registry
    mailed Nagell's annual verification form to Pharos House.               The
    form was twice returned to the Registry as undeliverable, and
    finally reached Nagell at his new address after the Bath Police
    Department informed the Registry of Nagell's new residence.
    On December 28 or 29, 2015, Nagell completed his annual
    verification form, along with a notice of change of information
    report updating his residence and employer information, at the
    Bath Police Department.4       In the report, however, he identified
    his employer as "Emery & Waterhouse," even though he had become a
    full-time employee at Noyes on December 21, 2015, and had ended
    his professional affiliation with Emery-Waterhouse and SSS earlier
    in   December   2015.    The   Registry   received   Nagell's   forms    on
    January 4, 2016.     Because Nagell did not provide a full physical
    address for his listed employer, the Registry sent a letter back
    to Nagell on January 4, 2016, requesting that he provide his
    employer's address.      In response, Nagell submitted a new notice
    of change of information report, dated January 13, 2016, in which
    he once again listed Emery-Waterhouse as his employer and included
    4  It seems that Nagell signed the form on December 28th, but
    completed other sections of the form on December 29th.
    -5-
    its address.     The Registry received that new form on January 20th.
    Nagell did not update his employment information after that.
    Nagell continued to work full-time at Noyes until late
    April 2016.     On April 27, 2016, Nagell's probation officer filed
    a petition to revoke Nagell's supervised release for, inter alia,
    failing    to   provide   the   Registry   with   his   updated   employment
    information.     The court issued an arrest warrant and, on May 3,
    2016, Nagell was arrested.       A one-count Information charged Nagell
    with knowingly failing to update his sex offender registration
    between December 2015 and April 2016, in violation of 18 U.S.C.
    § 2250(a).5     A two-day jury trial in the United States District
    Court for the District of Maine followed.
    The parties entered a stipulation as to the first two
    elements of the crime, namely, that Nagell was a sex offender under
    SORNA by reason of a conviction under federal law, and that as a
    result of that conviction, he was required to register under SORNA.
    The only contested issue that remained was whether Nagell knowingly
    failed to update his employment information at the Registry between
    December 2015 and April 2016, as required by SORNA.
    5   18 U.S.C. § 2250(a) reads, in part:
    Whoever . . . is required to register under the Sex
    Offender Registration and Notification Act; . . .
    knowingly fails to register or update a registration
    as required by the Sex Offender Registration and
    Notification Act shall be fined under this title or
    imprisoned not more than 10 years, or both.
    -6-
    At trial, the following five witnesses testified for the
    government's case-in-chief: Nagell's Probation Officer, Kristin
    Cook; SSS's Director of Recruiting, Jeremy Jackson; Noyes's Vice
    President, William Noyes; Office Associate II at the Registry,
    Sally Taylor; Bath Police Department Detective, Andrew Booth.        The
    defense's only witness was Nagell, who took the stand in his own
    defense.      Nagell's testimony led the prosecution to call Kim
    Hartley as a rebuttal witness.          The jury found Nagell guilty as
    charged.
    At sentencing, the government -- arguing that Nagell had
    willfully obstructed the administration of justice by committing
    perjury at trial -- asked for a two-level enhancement pursuant to
    U.S.S.G. § 3C1.1.      The government relied on two instances at trial
    where witness testimony directly contradicted Nagell's statements
    under oath.
    The    first      instance     involved   Nagell's   testimony
    concerning his state of mind as to his failure to register.           On
    direct examination, Nagell claimed that Kim Hartley, his case
    manager at Pharos House, had told him that she had updated his
    information at the Registry.        When asked why he did not report
    Noyes as his current employer, Nagell responded, "Because when I
    was at the halfway house Kim said everything was taken care of.
    So she said she put my current jobs and current address on the
    information,     but   the   form   never    appeared."    During   cross
    -7-
    examination, when the prosecutor asked Nagell whether he had sent
    any notice of change of information report to the Registry updating
    his employment information while at Pharos House, Nagell responded
    that he didn't because "Kim said she took care of that. . . . I
    asked her twice."
    Kim Hartley's testimony as a rebuttal witness directly
    contradicted Nagell's statements on the stand.       The following
    exchange is illustrative:
    Q: As a general matter, when a resident of
    Pharos House, somebody . . . who is part of
    your caseload, obtains employment outside the
    house, have you ever notified the sex offender
    registry on their behalf?
    A: Never.
    Q: Have you ever told –- told one of the
    residents that you would do that on their
    behalf?
    A: Never.
    Q: With respect to Mr. Nagell specifically,
    did you ever notify the sex offender registry
    of changes in his employment on his behalf?
    A: No.
    Q: Did you ever tell him that you would do
    that?
    A: No.
    On cross-examination, Kim Hartley testified that she had
    met with Nagell thirty to forty times during his time at Pharos
    -8-
    House, and could not recall that Nagell ever "spoke to [her] about
    the issue of registration."
    The second instance of contradictory testimony concerned
    Nagell's alleged visit to the Bath Police Department on January 13,
    2016.     According to Detective Booth's testimony, the Bath Police
    Department's practice was to create an internal record of any
    contact with a member of the public, referred to as an "incident"
    report.     Detective Booth further testified that the Bath Police
    Department had record of only two incident reports involving Nagell
    between December 2015 and January 2016.                   The first one, dated
    December 29, 2015, indicated that Nagell visited the police station
    to complete his annual verification form and a notice of change of
    information      report     with    Detective     Marc    Brunelle    ("Detective
    Brunelle"),      a    sex   offender     specialist. 6     The   second   incident
    report, dated January 7, 2016, pertained to the notice that the
    Bath    Police       Department    had   issued   to     Nagell's    neighborhood,
    informing that a sex offender lived in the area.
    According to Detective Booth, on December 28, 2015,
    Nagell signed the verification form and notice of change of
    information report mailed to him by the Registry, in which he
    identified Emery-Waterhouse as his employer, despite the fact that
    6  The form is dated December 28th but Detective Booth testified
    that Nagell visited the station on December 29th.
    -9-
    he no longer worked there.          He failed to include the physical
    address of his new employer.          Detective Booth further testified
    that, on December 29, 2015, Nagell met with Detective Brunelle at
    the   Bath    Police   Department   regarding   his    registration     forms.
    Detective      Brunelle    verified     Nagell's      identity,     took   his
    fingerprints, and filled out the lower half of the verification
    form.    He also scanned a copy of the forms for the Department's
    records before mailing them to the Registry.               All of this was
    standard practice.
    The Registry received Nagell's forms on January 4, 2016.
    Because Nagell did not provide a complete physical address for his
    listed employer, the Registry requested that Nagell provide his
    employer's address information and enclosed a blank notice of
    change of information report.
    On January 13, 2016, Nagell filled out and signed the
    notice   of     change    of   information   report,      providing    Emery-
    Waterhouse's complete address, even though he no longer worked
    there.   The form did not list Noyes as an employer.              The Registry
    received the updated form on January 20, 2016.              Nagell did not
    update his employment information after January 20, 2016.
    During direct examination, Nagell claimed that he had
    filled out the January 13 form at the Bath Police Department with
    a police officer other than Detective Brunelle.              Nagell claimed
    that there was a second page to this report, and that on it "the
    -10-
    detective wrote [']self-employed,['] put 27 Cobb Road on, and also
    put Noyes, and I didn't have the address for Noyes."                   Nagell also
    testified that he went home to get the address for Noyes and that
    he called the Bath Police Department the next day to relay it to
    the officer.        But, Nagell explained, the officer who had helped
    him the day before was out, so he communicated the address to the
    woman    who    answered   the   call.       This    testimony,       however,   was
    strongly contradicted by that of Detective Booth, who testified
    that the Bath Police Department did not have any incident report
    for Nagell's alleged visit to the Department on January 13th or a
    scanned copy of the form.           Pursuant to the Department's standard
    practice, it would have had both of these things had Nagell gone
    to the Department on January 13th.
    According to the government, Nagell's testimony about
    Kim     Hartley's    statements     and   his       alleged,    yet    unrecorded,
    January 13, 2016 visit to the Bath Police Department were clear
    instances      of   perjury   and   constituted       grounds    to    impose    the
    obstruction of justice enhancement.           The government further argued
    that the jury's rejection of Nagell's statements also supported a
    finding of perjury.           Nagell's defense counsel objected to the
    sentencing enhancement, claiming that the differing testimonies
    did not amount to perjury.          Rather, defense counsel insisted they
    merely    reflected    different     recollections       of    events.     Defense
    counsel further argued against a finding of perjury by suggesting
    -11-
    that   Kim    Hartley   could   not    remember   the   content   of   every
    conversation she had with Nagell and that, because one page of the
    January 13, 2016 notice of change of information report made it to
    the Registry, there was "some basis for [Nagell] to believe that
    he had in fact submitted the full documentation to the [Registry]."
    The sentencing judge, who also presided over the trial,
    found that,
    [T]he defendant committed perjury during the course
    of that hearing on a material matter . . . in asserting
    that his caseworker at Pharos House, Kim Hartley, had
    told him that she would handle the registration for
    him and that he assumed that his registration had been
    updated.   I believe Ms. Hartley testified that she
    never promised that she would do that. I also find
    that Mr. Nagell never hand delivered a registration
    update form to the Bath Police Department and that he
    relied on the Bath Police Department to deliver that
    form to the State.       I find that, based on the
    testimony of Detective Booth, that testimony is
    unbelievable and I find it to be perjurious.
    Accordingly, the judge applied a two-level enhancement
    pursuant to U.S.S.G. § 3C1.1,7 which increased Nagell's offense
    7   Section 3C1.1 of the Sentencing Guidelines states as follows:
    If (1) the defendant willfully obstructed or impeded,
    or attempted to obstruct or impede, the administration
    of justice with respect to the investigation,
    prosecution, or sentencing of the instant offence of
    conviction, and (2) the obstructive conduct related
    to (A) the defendant's offense of conviction and any
    relevant conduct; or (B) a closely related offense,
    increase the offense level by 2 levels.
    U.S.S.G. § 3C1.1.
    -12-
    level    from    fourteen,     see     U.S.S.G.    § 2A3.5(a)(2),       to   sixteen.
    This, in conjunction with Nagell's criminal history category of
    III,    yielded    a    GSR    of    twenty-seven      to   thirty-three        months'
    imprisonment.      The district court thereafter sentenced Nagell to
    thirty months in prison, to be followed by ten years of supervised
    release.
    Nagell now appeals, challenging the district court's
    finding of perjury and the resulting sentencing enhancement.                        He
    argues the district court clearly erred in holding that his
    testimony    contradicted       the       testimony   of    other    witnesses,    and
    constituted a willful attempt at obstruction of justice.
    II.   Discussion
    A.   Standard of Review
    We review preserved objections to the district court's
    legal interpretation of the Sentencing Guidelines de novo, and
    review     for     clear       error       the    court's     factual        findings.
    United States v. Flores-Machicote, 
    706 F.3d 16
    , 20 (1st Cir. 2013).
    Clear error is a deferential standard, under which affirmance is
    proper    unless       "upon   whole-record-review,          an     inquiring    court
    'form[s] a strong, unyielding belief that a mistake has been
    made.'"     United States v. Cintrón-Echautegui, 
    604 F.3d 1
    , 6 (1st
    Cir. 2010) (alteration in original) (quoting Cumpiano v. Banco
    Santander P.R., 
    902 F.2d 148
    , 152 (1st Cir. 1990)).
    -13-
    B.   Applicable Law
    The government bears the burden of proving the facts
    underlying     its     sentencing     enhancement     recommendation    by    a
    preponderance of the evidence.             United States v. Cannon, 
    589 F.3d 514
    , 517 (1st Cir. 2009) ("Where, as here, a defendant challenges
    the factual predicate supporting the district court's application
    of a sentencing enhancement, 'we ask only whether the court clearly
    erred in finding that the government proved the disputed fact by
    a preponderance of the evidence.'" (quoting United States v.
    Luciano, 
    414 F.3d 174
    , 180 (1st Cir. 2005))).
    Section 3C1.1 of the Guidelines calls for a two-level
    enhancement "[i]f . . . the defendant willfully obstructed or
    impeded, or attempted to obstruct or impede, the administration of
    justice    with     respect   to     the    investigation,    prosecution,   or
    sentencing    of     the   instant   offense    of   conviction."     U.S.S.G.
    § 3C1.1.     Application Note 4 lists perjury among the sorts of
    conduct this enhancement is intended to cover.               U.S.S.G. § 3C1.1,
    cmt. n.4(B).       The Supreme Court has adopted the federal definition
    of criminal perjury to serve as the meaning of perjury in this
    context, defining it as "[giving] false testimony [under oath]
    concerning a material matter with the willful intent to provide
    false testimony, rather than as a result of confusion, mistake, or
    faulty memory."       United States v. Dunnigan, 
    507 U.S. 87
    , 94 (1993)
    (citing 18 U.S.C. § 1621(1)).
    -14-
    The sentencing enhancement for perjury, however, "is not
    intended   to      punish   a   defendant   for   the    exercise   of   [his]
    constitutional right" to testify.            U.S.S.G. § 3C1.1, cmt. n.2;
    see also 
    Dunnigan, 507 U.S. at 95
    ("[N]ot every accused who
    testifies at trial and is convicted will incur an enhanced sentence
    under § 3C1.1 for committing perjury.").               "The enhancement does
    apply, however, if a defendant exercises his right to testify at
    trial but commits perjury in the process."                 United States v.
    Mercer, 
    834 F.3d 39
    , 48 (1st Cir. 2016) (citing U.S.S.G. § 3C1.1,
    cmt. n.4).
    The   enhancement    should    not   be    applied   mechanically
    "merely because an evidentiary conflict exists or because the jury
    rejects the defendant's explanation of the facts and finds him
    guilty."     United States v. Gobbi, 
    471 F.3d 302
    , 314 (1st Cir.
    2006) (citing United States v. Akitoye, 
    923 F.2d 221
    , 228-29
    (1st Cir. 1991)).       Instead, in order to apply an obstruction of
    justice enhancement for perjury, the sentencing judge has to make
    "findings that 'encompass all the elements of perjury -- falsity,
    materiality, and willfulness.'"         
    Mercer, 834 F.3d at 49
    (quoting
    United States v. Matiz, 
    14 F.3d 79
    , 84 (1st Cir. 1994)).                   "A
    sentencing court, however, is not required to address each element
    of perjury in a separate and clear finding."             
    Id. (quoting Matiz,
    14 F.3d at 84).        A single finding of perjury is sufficient to
    uphold the lower court's sentencing enhancement for obstruction of
    -15-
    justice.       United States v. D'Andrea, 
    107 F.3d 949
    , 959 (1st Cir.
    1997).
    A   finding   of    falsity      "[does]     not    require    directly
    contradictory testimony but may spring from a solid foundation of
    circumstantial evidence".            
    Akitoye, 923 F.2d at 229
    .            "Where, as
    here, the sentencing judge has presided over the trial, we must
    allow    him       reasonable     latitude      for    credibility     assessments."
    United States v. Shinderman, 
    515 F.3d 5
    , 19 (1st Cir. 2008).
    Materiality is defined in the Guidelines as "evidence,
    fact, statement, or information that, if believed, would tend to
    influence or affect the issue under determination."                           U.S.S.G.
    § 3C1.1 cmt. n.6; see also 
    Shinderman, 515 F.3d at 19
    .                              The
    materiality of a false statement is inferable from the entirety of
    the record and the issues at stake at trial.                      See 
    Matiz, 14 F.3d at 84
    (finding a statement material because "if believed, the jury
    would have acquitted [the defendant]").
    Finally,    the    level    of    culpability       required    by   the
    obstruction        of   justice    enhancement        is   willfulness.       U.S.S.G.
    § 3C1.1, cmt. n.2; see also United States v. Reynoso, 
    336 F.3d 46
    ,
    50 (1st Cir. 2003) ("[F]alse testimony caused by mistake, confusion
    or poor memory is not perjurious.").                  Sufficient materiality could
    suggest the willfulness of the false statement.                         See 
    Mercer, 834 F.3d at 49
    .
    -16-
    C.   Analysis
    Nagell submits that the district court erred in applying
    the two-level sentencing enhancement for obstruction of justice.
    Specifically,   he   argues     that    his     testimony   did   not   directly
    contradict that of the other witnesses and that it was ambiguous
    at best.    We disagree.   The district judge's factual findings are
    well-supported by the record, and his application of the sentencing
    enhancement encompasses all three elements of perjury -- falsity,
    materiality, and willfulness.           See 
    Dunnigan, 507 U.S. at 95
    -96;
    
    Mercer, 834 F.3d at 49
    .
    Nagell   contends    that     the    district   court   failed    to
    resolve testimonial ambiguities in his favor, under the principle
    of lenity embodied in the Guidelines.            See United States v. Clark,
    
    84 F.3d 506
    , 509-10 (1st Cir. 1996).                His reliance on Clark,
    however, is misguided.        Prior to their amendment in 1997, the
    Guidelines provided that "[i]n applying [Section 3C1.1] in respect
    to alleged false testimony or statements by the defendant, such
    testimony or statements should be evaluated in a light most
    favorable to the defendant."           U.S.S.G. § 3C1.1, cmt. n.1 (Nov.
    1995).     This language was removed from the Guidelines in 1997.
    United States v. McKeeve, 
    131 F.3d 1
    , 15 (1st Cir. 1997) (citing
    U.S.S.G. App. C, amend. 566 (Nov. 1997)); see also United States
    v. Greer, 
    285 F.3d 158
    , 182-83 (2d Cir. 2002) (remanding the case
    for resentencing due to the district court's application of the
    -17-
    old standard).    As things currently stand, the district court has
    the   responsibility     to   make   credibility   determinations      about
    witnesses   and   make   independent    findings   of   fact   based   on   a
    preponderance of the evidence, as the district judge did here.
    See 
    Dunnigan, 507 U.S. at 95
    ; 
    Reynoso, 336 F.3d at 50
    ("[T]he
    district court is the primary arbiter of witness credibility under
    U.S.S.G. § 3C1.1.").8
    Nonetheless, even under the no-longer operative standard
    set forth in the now repealed Guidelines committee note, the record
    still provides clear support for the finding that Nagell committed
    perjury.    Both on direct and cross examination, Nagell plainly and
    repeatedly stated that he did not think he needed to update his
    employment information because "Kim said she took care of that."
    This assertion prompted the government to introduce Kim Hartley,
    who flatly denied ever having given such assurance to Nagell or
    any other resident in the Pharos House.       Nagell suggests that Kim
    Hartley's testimony as a whole was ambiguous as to whether she may
    8  Nagell also cites 
    Gobbi, 471 F.3d at 314
    , in support of his
    contention that "the sentencing court . . . must give the defendant
    the benefit of any plausible doubt." However, this sentence in
    Gobbi cites to and relies on a portion of 
    Akitoye, 923 F.2d at 228-29
    , that expressly discusses the now defunct "light most
    favorable" language in U.S.S.G. § 3C1.1 cmt. n.1 (1995). Because
    this language was removed from the Guidelines in 1997, Gobbi's
    instruction that the district court give the defendant the benefit
    of any plausible doubt should not be followed here or in the
    future.
    -18-
    have given this impression to Nagell, but she consistently denied
    the defense counsel's questions on the issue.                          The sentencing
    court    could    have   easily       given   more   credit       to   Kim    Hartley's
    testimony and concluded that Nagell's statements were not the
    result of confusion, mistake or faulty memory, but of his intent
    to mislead the jury.           See 
    D'Andrea, 107 F.3d at 959
    .
    Moreover, although a single finding of perjury would be
    sufficient       to    affirm    the    sentencing        enhancement,        
    D'Andrea, 107 F.3d at 959
    , the district court's second finding of perjury is
    also reasonably supported by the record.                    Nagell claimed in his
    testimony that he visited the Bath Police Department twice, on
    December 29, 2015 and January 13, 2016.                   During the second visit,
    he allegedly filled out a change of information form with an
    unidentified police officer who did not testify at trial, and the
    second   page     of   the     form    containing    the     required     information
    allegedly went missing.          The Department's records corroborated the
    first visit, but the second, crucial visit on January 13th cannot
    be   squared      with    Detective       Booth's    testimony         regarding     the
    Department's standard practice.               The sentencing judge could have
    reasonably     found     the    alleged    visit     to    be    "unbelievable"      and
    Nagell's statements on it perjurious.                We therefore find no error
    in this finding, let alone clear error.
    Finally,     Nagell       challenges     the       materiality     of   the
    statements that the judge found to be perjurious.                            As defense
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    counsel argued during trial, however, Nagell's statements were
    material to his defense strategy.          Through his testimony, Nagell
    attempted to negate having a mens rea of "knowingly," which was an
    element of the crime.     If the jury believed him, his statements
    could have changed the outcome of the case, and so the statements
    were material.    U.S.S.G. § 3C1.1 cmt. n.6; 
    Shinderman, 515 F.3d at 19
    ; 
    Matiz, 14 F.3d at 84
    .
    III.     Conclusion
    Because the district court neither committed clear error
    in   finding    that   Nagell     perjured     himself   at   trial,   nor,
    consequently,    in    imposing     the      two-level   enhancement   for
    obstruction of justice, we affirm.
    Affirmed.
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