United States v. Warren, Tony L. ( 2006 )


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  •                              In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________
    No. 05-2791
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    TONY L. WARREN,
    Defendant-Appellant.
    ____________
    Appeal from the United States District Court
    for the Northern District of Illinois, Eastern Division.
    No. 03-CR-113-2—Elaine E. Bucklo, Judge.
    ____________
    ARGUED APRIL 14, 2006—DECIDED JULY 27, 2006
    ____________
    Before BAUER, ROVNER, and EVANS, Circuit Judges.
    ROVNER, Circuit Judge. Tony Warren was convicted of
    various charges related to a fraudulent check scheme. What
    makes Warren’s convictions unusual is his insistence that
    the fraud was authorized by the United States Secret
    Service. Warren stipulated that he sent several altered
    checks purportedly made out to “A&B Electrical” to an
    individual named Robert Studnicka, who cashed them and
    kept a portion of the proceeds for himself. Police caught
    Studnicka, who cooperated and implicated Warren in the
    scheme. The two were charged in a nine-count superseding
    indictment with violating 
    18 U.S.C. §§ 1344
     (prohibiting
    bank fraud), 2314 (forbidding transporting forged and
    fraudulent checks in interstate commerce), and 513 (prohib-
    2                                              No. 05-2791
    iting making, uttering, or possessing forged securities).
    Studnicka pleaded guilty, but Warren went to trial, claim-
    ing that his behavior was authorized because he was a
    confidential informant for the United States Secret Service.
    The jury disbelieved Warren’s defense, and convicted him
    on all counts. Warren now appeals, raising a number of
    alleged errors at both trial and sentencing.
    I.
    Although the details remain murky, the premise of the
    check scheme is fairly straightforward. Legitimate checks
    issued by corporations such as Whirlpool and National
    Geographic, among others, were altered so that the
    payee on each check was A&B Electric, a company owned by
    Studnicka. Warren, who was living in New York at the
    time, then sent the altered checks to Studnicka, who was
    living in Illinois (Warren has never disclosed how he
    obtained the checks). Studnicka then deposited the checks,
    which ranged in amount from $65,000 to $280,000, into his
    bank accounts at Palos Heights Bank and Trust and First
    Midwest Bank. Generally Studnicka would withdraw
    proceeds from the checks to send to Warren (between
    $20,000 to $30,000) and keep the remainder for himself.
    Warren and Studnicka repeated this pattern approximately
    five times between December 2002 and January 2003. That
    same month, Studnicka was arrested, owing in part to
    suspicion raised by the failure of a $214,000 check he
    deposited at Palos Heights Bank and Trust to clear.
    After Studnicka’s arrest, he agreed to cooperate in the
    investigation against Warren. Under the direction of federal
    agents, Studnicka persuaded Warren to come to Illinois to
    pick up his remaining share of the checks that Studnicka
    had cashed. Warren agreed to meet Studnicka at a mall in
    Matteson, Illinois, ostensibly to recover approximately
    $200,000 that he believed Studnicka still owed him.
    No. 05-2791                                               3
    Studnicka met Warren in the parking lot, and agents
    arrested both men. The government indicted them in April
    2003, and returned a superseding indictment in August
    2003.
    Warren admitted giving the checks to Studnicka, but he
    provided an unusual justification: he claimed he was
    working as a confidential informant for the Secret Service
    in New York. The government initially denied that Warren
    had ever worked as a confidential informant. Then in
    August 2003, the government acknowledged that Warren
    had worked as a confidential informant for a brief
    period between March and April 2001. The government
    submitted two affidavits from Douglas Farrell, a Chicago-
    based Secret Service agent who had investigated the
    pending charges against Warren. The first affidavit ex-
    plained that when they first explored Warren’s claim that
    he was a confidential informant, the New York Secret
    Service offices were unable to confirm the claim. After
    contacting the Secret Service Investigative Support Divi-
    sion, however, Chicago Secret Service agents learned that
    Warren had in fact worked briefly as a confidential infor-
    mant, but that he had been “formally deactivated” in April
    2001. Farrell’s second affidavit, tendered in response to a
    court order for the government to provide Warren with “all
    information relating to defendant’s status as a confidential
    informant,” explained that the paperwork associated with
    Warren’s service as a confidential informant had been
    destroyed by the September 11, 2001 terrorist attacks on
    the World Trade Center. Nearly a year later, in July 2004,
    the government tendered a draft Secret Service report
    detailing Warren’s work as a confidential informant. Secret
    Service agent Brian Koch gave the report to prosecutors
    during an interview, and they tendered it promptly to
    Warren.
    In addition to Agent Farrell’s affidavits and Agent Koch’s
    report, at Warren’s request the government facilitated a
    4                                                No. 05-2791
    telephone interview between Warren’s counsel and Secret
    Service agent Matthew Quinn, who had worked with
    Warren. Quinn provided background information about how
    Warren became involved with the Secret Service. Quinn
    explained that in February 2001 he worked on the “West
    African Task Force,” investigating crimes com-
    mitted primarily by Nigerian nationals in the United States
    and overseas. Warren had come to the attention of the
    Secret Service in 1999 when agents obtained a counterfeit
    check made out to Warren and drawn on the Central Bank
    of Nigeria. Nothing came of this initial contact, but Warren
    later approached the Secret Service in early 2001, at which
    point he had lost approximately $400,000 in a scam known
    as an “advance fee fraud.” In one iteration of this scheme,
    someone from Nigeria contacts a United States citizen
    (often a small business owner who can readily access
    capital) with a lucrative but somewhat shady “business”
    venture. The story would be, for instance, that due to a
    government contract overrun, between $20 and $40 million
    of “free” money was tied up in Nigeria. With a cash bribe for
    some Nigerian government official, however, the money
    could be released. The individual contacted would be asked
    to advance, for example, $10,000 or $15,000 for the bribe,
    and would be promised anywhere from 10 to 50 percent of
    the multi-million dollar sum in exchange. This fantastic-
    sounding “opportunity” was accompanied by official-looking
    documentation. The scheme did not stop after the first
    $10,000 to $15,000. Instead, the perpetrator encountered a
    series of supposed snags in accessing the money, each of
    which required the victim to continue sending funds in
    hopes of getting the big payoff or at least recouping his orig-
    inal “investment.”
    As a victim of this scheme, Warren was enlisted by the
    Secret Service to help infiltrate the Nigerian fraud ring and
    bring one of its leaders to the United States for arrest.
    According to agents who worked with Warren, his time as a
    No. 05-2791                                                5
    confidential informant was short-lived due to his frustration
    with the pace of the investigation and ultimately his refusal
    in March 2001 to turn over a counterfeit $3 million check.
    In connection with this incident and a later independent
    federal investigation into fraudulent checks, Warren was
    arrested in June 2002 by federal officials in New York.
    However, the complaint against him was later dismissed.
    Before his trial on the current charges, Warren stipulated
    that he had caused the checks to be sent to Studnicka. His
    trial thus centered on his public authority defense.
    Studnicka testified against Warren, and the government
    played taped conversations between Studnicka and Warren
    made after Studnicka’s arrest. In the tapes, Warren refers
    repeatedly to the “Nigerians,” and his need to go to the
    “motherland” to get his money back.
    Two Secret Service agents who had worked with Warren
    also testified. The first, Matthew Quinn, explained that
    he and two other agents, Kevin Worthington and Brian
    Koch, met with Warren in late 2000 or early 2001. After
    seeing the documents Warren had received from the
    perpetrators, the agents enlisted Warren as a confidential
    informant. Shortly thereafter, at the beginning of March
    2001, Quinn was transferred from the West African Task
    Force to the presidential detail. Despite the transfer, Quinn
    continued to work informally with Worthington and Koch
    when the need arose. Quinn testified that one of his last
    conversations with Warren was to tell him that he was no
    longer to do anything on behalf of the Secret Service.
    In connection with that testimony, Warren’s counsel
    asked Quinn what “deactivation” meant, to which Quinn
    responded, “ ‘deactivation’ is not really a word that I would
    use.” Believing that Quinn had used the term in his pre-
    trial telephone interview, counsel sought to impeach Quinn
    using the telephone interview, but the court sustained
    the government’s objection.
    6                                               No. 05-2791
    Agent Brian Koch, who had taken over supervising
    Warren when Quinn was transferred, also testified. He
    recounted that in April 2001 Warren had received a check
    for $3 million from a Nigerian man named Dr. Oduebo.
    Warren faxed Koch a copy of the check, and Koch in-
    formed him that it was counterfeit. He testified that he told
    Warren to hold on to the check until agents could come
    retrieve it. But when Koch arrived to pick up the check,
    Warren told Koch that he was too late; the check was gone.
    Warren then left under the pretense of retrieving the check.
    After waiting an hour or so for Warren to return, Koch left
    and returned to his office. He later spoke to Warren on the
    phone and informed him that he was no longer working as
    an informant, and that if he tried to cash the check he
    would be prosecuted.
    Warren testified in his own defense. He insisted that
    Secret Service agents had never told him that he was no
    longer to act as a confidential informant. Instead, he
    maintained that he was authorized to do “whatever it takes”
    to infiltrate the “Nigerian mob.” He claimed that he was
    still acting pursuant to that mandate in late 2002 and early
    2003 when he gave the fraudulent checks to Studnicka to
    cash, and that as he sat testifying he remained in “deep
    cover” pursuant to that mission. Warren also testified about
    the earlier charges against him in New York. He used the
    fact that those charges had been dropped to advance his
    theory that he was still working as a confidential informant
    at the time of his interaction with Studnicka nearly two
    years after he began working as a confidential informant.
    After Warren rested his case, the government called
    Assistant United States Attorney Richard Donoghue, who
    had overseen the 2002 charges against Warren in New
    York. According to Donoghue, Warren was never in-
    dicted for several reasons. The decision to dismiss the
    original criminal complaint was fueled by time constraints
    and the fact that additional fraudulent checks were uncov-
    No. 05-2791                                                   7
    ered during the investigation of the initial charges.
    Donoghue also testified that at least one check had been
    destroyed in the World Trade Center on September 11.
    Finally, Donoghue explained that when his office learned
    about the indictment in Chicago, it decided to wait until
    that prosecution concluded instead of conducting two
    parallel prosecutions.
    Donoghue also testified that Warren had called him after
    the New York charges were filed, “rambling” about it be-
    ing “the season for checks” and claiming that he wanted
    to “get the Nigerians.” When Donoghue reminded Warren
    that his last attempt at cooperation had not been entirely
    successful, Warren claimed that the Secret Service had
    “bullshitted” him. Donoghue also rebuffed Warren’s attempt
    to set up a private meeting with him. Donoghue had
    contemporaneous notes from that conversation, which he
    provided to prosecutors the night before testifying. Prosecu-
    tors, in turn, provided the notes to Warren the morning of
    Donoghue’s testimony. After Donoghue’s testimony, War-
    ren’s counsel asked the court if Warren could take the stand
    again to refute portions of Donoghue’s testimony. The
    district court reluctantly agreed, but then Warren decided
    against testifying further and both sides rested.
    The jury apparently disbelieved Warren’s public authority
    defense, and convicted him on all counts (except Count 5,
    which was dismissed). Warren moved for a new trial,
    alleging that a number of trial errors deprived him of a fair
    trial and that the government had withheld exculpatory
    evidence relating to his status as a confidential informant.
    The court denied his motion. At sentencing, the district
    court declined to award Warren credit under the advisory
    guideline range for acceptance of responsibility, see U.S.S.G.
    § 3E1.1, and also adjusted the advisory range upward based
    on her finding that Warren obstructed justice by lying when
    he testified at trial that he was still acting as a confidential
    informant, see U.S.S.G. § 3C1.1. These calculations, com-
    8                                               No. 05-2791
    bined with Warren’s lack of any criminal history, resulted
    in an advisory guideline range of 41 to 51 months. The court
    sentenced Warren to 41 months imprisonment followed
    by five years of supervised release, and ordered him to
    pay full restitution of $177,905.49 (jointly and severally
    with Studnicka).
    II.
    Warren claims that his right to a fair trial was prejudiced
    because the government withheld information relating to
    his status as a confidential informant and belatedly dis-
    closed Donoghue’s notes. He also argues that he was
    prejudiced by his inability to impeach Agent Quinn with the
    notes from his telephone interview. Finally, he attacks his
    sentence and the jury instructions at his trial. We consider
    his arguments in turn.
    A. Motion for a New Trial
    1. Brady Violations
    First, Warren argues that the district court erred by
    denying his motion for a new trial, premised on alleged
    discovery and trial errors. He contends that the government
    breached its discovery obligations by withholding informa-
    tion about his status as a confidential informant. He points
    in particular to the government’s failure to produce inde-
    pendent written evidence of his “deactivation” as a confiden-
    tial informant—evidence he insists exists based on Agent
    Farrell’s affidavit to the effect that Warren was “formally
    deactivated” in April 2001.
    In Brady v. Maryland, 
    373 U.S. 83
     (1963), the Supreme
    Court held that “the suppression by the prosecution of
    evidence favorable to an accused . . . violates due process
    where the evidence is material either to guilt or to pun-
    No. 05-2791                                                  9
    ishment, irrespective of the good faith or bad faith of the
    prosecution,” 
    id. at 87
    . In order to demonstrate a Brady
    violation, Warren must make three showings: (1) that the
    evidence is favorable to him because it is exculpatory or
    impeaching; (2) that the prosecution suppressed the
    evidence, either wilfully or inadvertently; and (3) that
    “prejudice . . . ensued.” Strickler v. Greene, 
    527 U.S. 263
    ,
    281-82 (1999); see also United States v. Price, 
    418 F.3d 771
    ,
    785 (7th Cir. 2005). To demonstrate prejudice, Warren must
    establish a reasonable probability that the result of the trial
    would have been different if the evidence had been dis-
    closed. Strickler, 
    527 U.S. at 280
    ; see also United States v.
    Childs, 
    447 F.3d 541
    , 545 (7th Cir. 2006). We review the
    district court’s denial of a motion for a new trial premised
    on alleged Brady violations for abuse of discretion, see
    United States v. Elem, 
    269 F.3d 877
    , 881 (7th Cir. 2001),
    viewing the evidence in the light most favorable to the
    prevailing party, Childs, 
    447 F.3d at 544
    .
    The central thesis of Warren’s Brady claim is that the
    government has not been forthcoming with documentation
    of his service as a confidential informant and has never
    produced a written document informing Warren that he is
    no longer a confidential informant. In denying Warren’s
    motion for a new trial, the district court pointed out that
    Warren had failed to establish that such a document exists.
    Warren now faults the district court for focusing too much
    on a “deactivation” form and overlooking Warren’s argu-
    ment that the government withheld other information as
    well. Warren, however, fails to identify any such “other
    information” with precision. Instead, he takes aim at the
    government’s responses to discovery in general, pointing
    to its initial denial of his claim that he was a confidential
    informant, its failure to mention the September 11 terrorist
    attacks as a reason it lacked information until Farrell’s
    second affidavit, and the late production of Brian Koch’s
    draft Secret Service report. Warren argues that the govern-
    10                                               No. 05-2791
    ment’s shifting position on the evidence it did disclose
    necessarily means other evidence must have been withheld.
    He also continues to insist that Agent Farrell’s use of the
    phrase “formally deactivated” means there must be some
    official document stating that Warren no longer works as a
    confidential informant.
    Whether limited to an alleged document deactivating
    Warren as a confidential informant or expanded to in-
    clude the universe of all documentation of Warren’s confi-
    dential informant activities, the result is the same. As the
    district court recognized, Warren is simply unable to point
    to any specific evidence, exculpatory or otherwise, withheld
    by the government. Without that, his Brady claim fails to
    get off the ground. See Price, 
    418 F.3d at 785
     (no Brady
    violation where no document existed corroborating defen-
    dant’s claim of alleged agreement between government and
    prosecution witness). Even assuming the existence of such
    evidence, it is far from clear that it would be exculpatory or
    impeaching. Take for instance Warren’s insistence that
    there must be some document “deactivating” him as a
    confidential informant. Far from exonerating Warren, such
    a document would undercut his public authority defense
    and deprive him of one of his theories of defense: that he
    never received any official notice informing him that he was
    no longer a confidential informant, and he thus continued
    to believe at the time he committed the offenses that he was
    infiltrating the Nigerian fraud ring on behalf of the Secret
    Service.
    Without any evidence that the government withheld
    information, Warren’s claim is reduced to a complaint about
    the timing of various government revelations. Warren,
    however, fails to explain what he would have done differ-
    ently if the government had admitted earlier that he was a
    confidential informant or provided information, such as
    Agent Koch’s report, sooner. Late disclosure does not itself
    No. 05-2791                                                 11
    constitute a Brady violation. See United States v. O’Hara,
    
    301 F.3d 563
    , 569 (7th Cir. 2002). Warren used all of the
    information the government did provide and built a defense
    around his claim that he was a confidential informant. 
    Id. at 569
     (no Brady violation where government disclosed
    information during trial but defendant had sufficient time
    to make use of it); see also United States v. Knight, 
    342 F.3d 697
    , 708-09 (7th Cir. 2003) (no Brady violation where
    defendant made effective use of evidence despite govern-
    ment’s late disclosure). The district court thus did not abuse
    its discretion by denying his motion for a new trial premised
    on documentation related to his status as a confidential
    informant.
    2. Donoghue’s Notes
    Likewise, the district court was within its discretion to
    conclude that Warren was not entitled to a new trial based
    on the government’s handling of Assistant United States
    Attorney Richard Donoghue’s notes from his 2002 conversa-
    tion with Warren. As discussed above, the government
    called Donoghue to refute the inference created by Warren’s
    testimony that the New York charges against him were
    dismissed because he was a confidential informant. Shortly
    before Donoghue took the stand, the government produced
    the notes he had made memorializing Warren’s odd Novem-
    ber 2002 call requesting a private meeting. Warren argues
    that by failing to produce the notes earlier, the government
    violated Brady and Federal Rule of Criminal Procedure 16.
    Rule 16 requires the government, at the defendant’s
    request, to disclose “the substance of any relevant oral
    statement made by the defendant, before or after arrest,
    in response to interrogation by a person the defendant knew
    was a government agent if the government intends to use
    the statement at trial.” Fed. R. Civ. P. 16(a)(1)(A). The trial
    court has discretion to fashion a remedy for the govern-
    ment’s noncompliance with Rule 16, United States v. De La
    12                                               No. 05-2791
    Rosa, 
    196 F.3d 712
    , 715 (7th Cir. 1999), and this court will
    not disturb the district court’s decision absent a showing of
    abuse of discretion and prejudice, United States v. Breland,
    
    356 F.3d 787
    , 797 (7th Cir. 2004). Although Warren re-
    quested a new trial, such a remedy is warranted only when
    “all other, less drastic remedies are inadequate.” De La
    Rosa, 
    196 F.3d at 715
    . Additionally, a new trial is appropri-
    ate only if the alleged Rule 16 violation deprived Warren of
    a fair trial. See United States v. Miller, 
    199 F.3d 416
    , 420
    (7th Cir. 1999).
    Warren’s inability to establish prejudice dooms his claim.
    Assuming Donoghue’s notes were in fact protected by Rule
    16 (made as they were in response to Warren’s call to
    Donoghue, the applicability of the Rule is far from clear),
    Warren was prejudiced by their belated production only
    if he was “unduly surprised” and lacked “an adequate
    opportunity to prepare a defense.” Breland, 
    356 F.3d at 797
    .
    The government produced the notes before Donoghue
    testified, and Warren does not argue on appeal that he
    would have mounted a different defense had he obtained
    the notes sooner. Instead, he asserts generally that
    Donoghue’s handwritten notes “related to the central issue
    of defendant’s status as a CI and his defense of public
    authority.” But this point is irrelevant unless the timing
    of the notes’ production somehow prevented Warren from
    using them in his defense. Indeed, he did not request a
    continuance when the notes were disclosed, Fed. R. Crim.
    P. 16(d)(2)(B) (authorizing court to grant continuance for
    non-compliance with Rule 16), and at a sidebar after
    Donoghue’s testimony counsel decided against having
    Warren take the stand again. Because Warren’s counsel
    made use of the notes in his cross-examination, and Warren
    does not explain what he would have done differently had
    he obtained them earlier, the district court did not abuse its
    discretion by denying his motion for a new trial premised on
    the notes. Breland, 
    356 F.3d at 797
    ; De La Rosa, 196 F.3d
    No. 05-2791                                               13
    at 716-17 (no prejudice where defendant rejected court’s
    offer of continuance and no bad faith was shown on govern-
    ment’s part); see also Knight, 
    342 F.3d at 705-06
     (no Brady
    violation when government disclosed impeachment evidence
    in time for defendants to incorporate information into cross-
    examination).
    3. Impeachment of Agent Quinn
    Warren next argues that the he was denied a fair trial
    because the district court refused to allow him to cross-
    examine Agent Quinn with what Warren characterizes as
    Quinn’s prior inconsistent statement. While cross-examin-
    ing Quinn, Warren’s counsel asked him what the term
    “deactivation” meant, to which Quinn responded, “‘deactiva-
    tion’ is not really a word that I would use, but it’s—I’m
    assuming you are asking if it is applying towards taking
    a CI who is activated and deactivating him.” Counsel
    then attempted to seize on Quinn’s representation that
    “deactivation” was not really a term he would use and
    suggest that he had in fact used the term in his pre-trial
    telephone interview. During that interview, the government
    asked Agent Quinn if he recalled “when Tony [Warren] was
    deactivated as a CI” and “why it was he was deactivated.”
    Defense counsel then asked Quinn what he meant by
    “deactivation,” to which Quinn responded, “[d]eactivation
    just simply means the—no longer using an individual as an
    informant.” In response to continuing questions from
    counsel, Quinn used the term “deactivation” several other
    times during the interview.
    This exchange forms the basis for Warren’s claim that he
    was denied an opportunity to impeach Quinn with his prior
    inconsistent statement. Believing the telephone interview
    could not be used because it was unsworn, the district court
    denied Warren’s attempt to refer to it at trial. When
    Warren later moved for a new trial, he represented to the
    14                                              No. 05-2791
    court that he had been denied the opportunity to impeach
    Quinn’s testimony on the issue of whether Quinn “told
    Warren he was deactivated.” At that point, the district court
    acknowledged that it may have erroneously excluded the
    prior statement on the grounds that it was unsworn, and so
    ordered further briefing on whether its refusal to allow the
    “impeachment” was harmless. After reviewing Quinn’s
    testimony against the actual transcript of the telephone
    interview, however, the district court concluded that there
    was no inconsistency, and thus no error in its decision to
    prohibit the “impeachment.” We review the district court’s
    decision for abuse of discretion. See United States v. Heath,
    
    447 F.3d 535
    , 538 (7th Cir. 2006).
    We agree with the district court that any error in disal-
    lowing the statement was harmless because Quinn’s trial
    testimony is not inconsistent with his telephone interview.
    In the telephone interview, Quinn was repeatedly asked if
    he told Warren that he was “deactivated.” Agent Quinn
    responded, that no, he did not tell Warren that he was
    “deactivated,” but he did tell Warren that he was no longer
    authorized to do anything on behalf of the Secret Service.
    Then at trial Agent Quinn testified that “deactivation” is
    not a term that he uses. The fact that Agent Quinn repeated
    the word “deactivation” during the telephone interview does
    not undercut his trial testimony that he does not use the
    word “deactivation” to tell someone that he is no longer a
    confidential informant.
    In his brief Warren makes much of what he characterizes
    as the district court’s admission of error regarding the
    statement’s admissibility. But his argument ignores the
    district court’s ultimate finding that any error was
    harmless—a finding that is not clearly erroneous in light of
    the fact that Quinn’s statements in the telephone interview
    were not actually inconsistent with his trial testimony. See
    United States v. Douglas, 
    408 F.3d 922
    , 927 (7th Cir. 2005)
    No. 05-2791                                                15
    (rejecting defendant’s argument that district court errone-
    ously limited cross-examination because the “so-called
    impeachment evidence was not relevant”); United States v.
    Akinrinade, 
    61 F.3d 1279
    , 1287 (7th Cir. 1995) (upholding
    district court’s refusal to issue jury instruction regarding
    prior inconsistent statements when “[t]here simply were no
    clear inconsistencies in testimony”).
    B. Sentencing
    Warren next takes issue with two of the district court’s
    decisions at sentencing. First, he contends that the district
    court erroneously imposed an upward adjustment to his
    sentence for obstruction of justice. Relatedly, he takes issue
    with the district court’s failure to give him credit
    for acceptance of responsibility.
    Under § 3C1.1 the district court may enhance a defen-
    dant’s sentence two levels after finding that he willfully
    obstructed or impeded justice during the offense of con-
    viction. See U.S.S.G. § 3C1.1. The comments to that guide-
    line list “committing, suborning, or attempting to suborn
    perjury” as behavior warranting the enhancement. How-
    ever, as Warren points out, neither denying guilt nor
    testifying and later being found guilty themselves provide
    a basis for the enhancement. U.S.S.G. § 3C1.1, comment,
    n.2. Thus, if a defendant objects “to a sentence enhance-
    ment resulting from her trial testimony, a district court
    must review the evidence and make independent findings
    necessary to establish a willful impediment to or obstruc-
    tion of justice.” United States v. Dunnigan, 
    507 U.S. 87
    , 95
    (1993); see also United States v. Williams, 
    272 F.3d 845
    , 864
    (7th Cir. 2001). We review the district court’s application of
    the Guidelines de novo and its factual determinations for
    clear error. See United States v. Davis, 
    442 F.3d 1003
    , 1008-
    09 (7th Cir. 2006).
    Warren did challenge the obstruction-of-justice adjust-
    ment, and the district court made appropriate factual
    16                                              No. 05-2791
    findings to support it. On appeal, Warren renews his
    argument that the jury’s guilty finding alone does not lead
    to the conclusion that he lied under oath. He could, for
    example, honestly have believed that he was acting as a
    confidential informant, and the jury could still have found
    him guilty on the grounds that his belief was unreasonable.
    The district court recognized this and made its own findings
    as follows: “[W]hat we have here is that I need to make a
    finding, and unfortunately I do find that he made material
    misstatements under oath on the stand.” The court went on
    to point out that it was authorized to decide that Warren
    had obstructed justice, and found specifically that, “when he
    said that these agents all said that his conduct would be
    legal, that he knew that that was not true . . . when he
    asserted that Agent Brian Koch was not truthful when he
    claimed he deactivated the defendant, that the defendant
    knew that was not true . . . when he said that no one ever
    told him to stop working for the Secret Service, that he
    knew that that was not true . . . when he said that the
    Secret Service authorized his activity with respect to the
    checks charged in the indictment, he knew that was not
    true; and when he said that he was still in deep cover, he
    knew that that was not true.”
    Unsatisfied with these findings, Warren argues that
    in the wake of United States v. Booker, 
    543 U.S. 220
     (2005),
    the jury must make the factual findings necessary to
    support an obstruction-of-justice enhancement. His argu-
    ment is meritless. As we recently recognized in another
    obstruction-of-justice case, the Supreme Court in
    Booker “held that a Sixth Amendment problem arises where
    the sentence exceeds the statutory maximum for
    the charged crime or is imposed under a mandatory sen-
    tencing scheme, not that district courts may not conduct
    judicial fact-finding.” United States v. White, 
    443 F.3d 582
    ,
    592 (7th Cir. 2006). White continues, “[t]o the contrary,
    ‘Booker resolved the problem by making the guidelines
    No. 05-2791                                               17
    advisory; judicial fact-finding in sentencing is acceptable
    because the guidelines are now nonbinding.’ ” 
    Id.
     (quoting
    United States v. Robinson, 
    435 F.3d 699
    , 701-02 (7th Cir.
    2006)). Thus, the district court was authorized to find that
    Warren testified falsely as to a material issue, namely,
    whether he believed he was acting as a confidential infor-
    mant at the time he committed the fraud with Studnicka.
    Warren does not suggest, nor could he, that the factual
    findings themselves are clearly erroneous. We see no error
    in the district court’s discharge of its duty to make inde-
    pendent findings under the definition of perjury, Dunnigan,
    
    507 U.S. at 87
    , as required to support the enhancement.
    It follows from this conclusion that the court did not err
    by denying Warren credit for acceptance of responsibility
    under § 3E1.1 of the Sentencing Guidelines. The com-
    ments to § 3E1.1 state that conduct resulting in an en-
    hancement for obstruction of justice “ordinarily indicates
    that the defendant has not accepted responsibility for his
    criminal conduct.” U.S.S.G. § 3E1.1, comment, n.4. Add to
    that the fact that the adjustment is “not intended to apply
    to a defendant who puts the government to its burden of
    proof at trial by denying the essential factual elements of
    guilt,” id. comment, n.2, and Warren faces an uphill battle.
    Warren maintains without elaboration that he accepted
    responsibility by stipulating that he sent the fraudulent
    checks to Studnicka. He also claims he should not be denied
    credit under § 3E1.1 because of his “genuine belief” that he
    was acting as a confidential informant. The district court’s
    findings as to Warren’s obstruction of justice, however,
    undercut such a theory. Moreover, Warren fails to explain
    what is extraordinary about his case, and he did put the
    government to its burden of proof by maintaining that none
    of his conduct was unlawful because he was acting as a
    confidential informant. It was thus not clearly erroneous for
    the district court to deny Warren points for acceptance of
    responsibility. See Davis, 
    442 F.3d at 1010
    .
    18                                               No. 05-2791
    C. Jury Instructions
    That leaves Warren’s cursory challenges to several jury
    instructions and the special verdict forms given in his case.
    Citing Blakely v. Washington, 
    542 U.S. 296
     (2004), without
    any explanation of its applicability, he claims that three
    of the jury instructions should have required the govern-
    ment to prove beyond a reasonable doubt that his public
    authority defense was invalid. And without any citation
    at all, he claims it was improper for the court to admonish
    the jury not to consider Warren’s possible sentence when
    reaching its verdict. Warren provides no argument to
    support his unelaborated claim that the pattern jury
    instructions he disputes were invalid, nor can we see any
    reason for finding as much. Likewise, he provides no
    authority to support his claim that the court’s use of special
    verdict forms to determine actual and intended
    loss deprived him of a fair trial. Accordingly, he has waived
    any challenge to the jury instructions or the special verdict
    forms. See United States v. Turcotte, 
    405 F.3d 515
    , 536 (7th
    Cir. 2005) (“In this circuit, unsupported and undeveloped
    arguments are waived.”).
    III.
    For the foregoing reasons, we AFFIRM Warren’s convic-
    tions and sentence.
    No. 05-2791                                         19
    A true Copy:
    Teste:
    ________________________________
    Clerk of the United States Court of
    Appeals for the Seventh Circuit
    USCA-02-C-0072—7-27-06