United States v. Burke, Robert A. ( 2005 )


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  •                              In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________
    No. 03-3483
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    ROBERT A. BURKE,
    Defendant-Appellant.
    ____________
    Appeal from the United States District Court
    for the Northern District of Illinois, Eastern Division.
    No. 01 CR 1049—Rebecca R. Pallmeyer, Judge.
    ____________
    ARGUED FEBRUARY 9, 2005—DECIDED SEPTEMBER 28, 2005
    ____________
    Before BAUER, EASTERBROOK, and ROVNER, Circuit
    Judges.
    BAUER, Circuit Judge. Defendant-Appellant Robert
    Burke was charged in a superseding indictment with six
    counts of perjury before a grand jury, pursuant to 18 U.S.C.
    § 1623. A petit jury convicted him of all but the third count,
    and he was sentenced to 20 years’ imprisonment. He
    challenges both his conviction and his sentence on appeal.
    We affirm his conviction but vacate his sentence and
    remand for resentencing pursuant to United States v.
    Booker, 
    125 S. Ct. 738
    (2005).
    2                                                No. 03-3483
    I. Background
    This case involves Burke’s efforts to disguise his role in
    facilitating the failed escape attempt of fellow inmate
    Jeffrey Erickson from the Dirksen Federal Building on
    June 20, 1992. On November 1, 1991, Burke was arrested
    for stealing money from a bank account and detained at the
    Metropolitan Correctional Center (“MCC”) in Chicago. He
    was assigned to the 17th floor, where he met inmates
    Jeffrey Erickson, Richard Luttrell, Thomas Hogan, and
    Humberto Gil-Vidarte (“Gil”). Chong Won Tai, a Korean
    businessman, was an inmate on the 19th floor. Burke met
    Tai in December 1991, and they socialized regularly for the
    next several months. During that time, Burke offered to
    have his parents smuggle into the MCC a handcuff key that
    he would sell to Tai for $10,000; he also suggested to Tai
    that the basement of the Dirksen building was the
    best place to attempt an escape. Tai declined Burke’s offer
    but found another proposal more attractive. Burke of-
    fered to connect Tai with a lawyer who for $350,000 would
    bribe Tai’s judge, and Tai agreed. Burke told Tai that the
    attorney’s driver would swing by Tai’s wife’s house to collect
    the first payment of $100,000. The driver stopped by and
    Tai’s wife made the payment, but neither the attorney nor
    his law firm received the money.
    Burke offered to perform services for other inmates, as
    well. For example, he told Gil that he could obtain a
    passport for him for $25,000, but Gil declined; Burke also
    offered to get Gil some bad medicine as part of a plot to sue
    the Bureau of Prisons, but Gil chose not to pursue the
    matter. In addition, Burke offered to bribe Hogan’s judge
    for $10,000, but Hogan declined.
    In June 1992, Burke passed Tai a note which stated that
    “exciting things” were about to happen to Erickson. The
    next month, Luttrell was visiting Erickson’s cell when
    Erickson revealed a small, rounded object that he held
    No. 03-3483                                                 3
    between his thumb and forefinger; he gestured with the
    object and told Lutrell, “I can leave at any time.” Around
    the same time, Luttrell overheard Erickson arguing with
    Burke about a key being overpriced, which caused Burke to
    respond: “If it wasn’t for me, you wouldn’t have it.” Gil saw
    them arguing, too, and heard Erickson yell, “Don’t worry. I
    am going to pay you.” He then heard Burke ask: “If you got
    what you wanted, why can’t I get what I want?” When Gil
    later inquired about the argument, Erickson told him that
    Burke sold him something and had increased the price. Gil
    asked what he had bought, and Erickson showed him a
    small object with a silver shaft that he had hidden in his
    shoe; Gil recognized it as a handcuff key. Erickson told Gil
    that Burke had gotten the key by hiding it under a table in
    the visiting room.
    On July 20, 1992, Erickson was on trial at the Dirksen
    building. At the end of the day, he was brought to the
    building’s basement to be transported back to the MCC.
    While in the elevator, Erickson freed himself from his
    handcuffs. When the door opened, he overpowered a deputy
    U.S. Marshal and seized her revolver. As he ran through
    the garage area of the basement, he shot and killed U.S.
    Marshal Roy Frakes and fatally wounded Court Security
    Officer Harry Belluomini. Erickson himself was wounded,
    and he shot himself in the head. A handcuff key was found
    next to his body.1
    Word of Erickson’s fate quickly reached the MCC. Luttrell
    heard Burke boast that the escape attempt “proves that if
    you want anything done in Cook County, you got to see me.”
    Burke’s mood darkened, though, after he was interviewed
    by the FBI as part of its investigation into the source of the
    1
    The government introduced evidence at trial that none of
    the officers present during the escape attempt were missing
    keys to the handcuffs that they carried.
    4                                               No. 03-3483
    handcuff key. Immediately after his interviews, Burke told
    Tai to destroy anything he had with Burke’s name on it.
    On September 14, 1992, Burke pleaded guilty in his bank
    theft case and was sentenced to two concurrent five-year
    terms of imprisonment and two concurrent five-years terms
    of supervised release. On July 8, 1994, he was paroled after
    serving approximately half of his custodial sentence. He fled
    the jurisdiction in the months that followed, and on Novem-
    ber 30, 1994, a warrant was issued for his arrest. On
    September 4, 1998, Burke was arrested in London. Burke
    fought his extradition to the United States for two years,
    but the British courts ultimately ordered him extradited for
    violating the terms of his supervised release.
    Burke was returned to the United States on December 22,
    2000. Upon his arrival, he was subpoenaed to testify before
    the grand jury investigating the Erickson escape attempt.
    Burke was then sent back to the MCC, where he became a
    friend of inmates Fred Rock and James Taylor. Burke told
    them he had gotten Erickson a handcuff key through his
    mother and was supposed to receive between $5,000 and
    $9,000 for it. On October 2, 2001, Burke was granted
    immunity from prosecution for the escape attempt and
    testified before the grand jury; he denied that he knew
    anything about Erickson’s handcuff key or that he had
    helped procure it.
    On December 5, 2001, Judge Lindberg determined that
    Burke should not have been sentenced to supervised release
    for his bank theft conviction because the offense occurred
    before the relevant provisions of the United States Sentenc-
    ing Guidelines took effect. Pursuant to this finding, the
    judge held the supervised release portion of Burke’s bank
    theft sentence void ab initio, and ordered Burke’s immedi-
    ate release. That same day, Burke was arrested and
    charged with committing perjury before the grand jury. On
    November 21, 2002, a jury convicted Burke of perjury, and
    he was sentenced.
    No. 03-3483                                                 5
    II. Discussion
    Burke raises numerous issues on appeal. We will address
    each in turn.
    A. International Law Claims
    Burke first argues that the district court should have
    dismissed the indictment because (1) his prosecution for
    perjury violated the Rule of Specialty contained in the
    extradition treaty between the United States and England,
    and (2) the vacatur of his supervised release sentence
    undermined the basis for his extradition and thus stripped
    the court of jurisdiction. We review both claims de novo.
    Matta-Ballesteros v. Henman, 
    896 F.2d 255
    , 258 (7th Cir.
    1990).
    The jurisdictional argument confuses subject-matter
    jurisdiction with jurisdiction over the person. Subject-
    matter jurisdiction is furnished by 18 U.S.C. § 3231, which
    covers all criminal prosecutions under the United States
    Code. Personal jurisdiction is supplied by the fact that
    Burke is within the territory of the United States. Whether
    he came to this nation in a regular manner does not affect
    the court’s authority to resolve the criminal charges against
    him. See United States v. Alvarez-Machain, 
    504 U.S. 655
    (1992). This means that we need not decide whether Judge
    Lindberg was right to alter the sentence imposed before
    Burke’s flight from the United States, or whether the
    British judiciary acted correctly in holding that the extradi-
    tion treaty called for his return to this nation.
    As for the Rule of Specialty: Matta-Ballesteros holds that
    extradition treaties do not create personal rights enforce-
    able by criminal 
    defendants. 896 F.2d at 259
    . Instead they
    create rules for the relations between nations. The United
    States (represented by the President and his Cabinet)
    believes that the charges against Burke are proper under
    6                                               No. 03-3483
    our treaty with the United Kingdom, because the crime
    for which he is being prosecuted occurred after his ex-
    tradition. Article 12(2) of the relevant treaty provides that
    the rule limiting prosecution to the offense for which
    extradition has been granted “shall not apply to offenses
    committed, or matters arising, after the extradition.”
    Extradition Treaty between the United States and United
    Kingdom, June 21, 1977, 29 U.S.T. 227, T.I.A.S. No. 8468.
    The United Kingdom has not expressed dissatisfaction with
    this view and, had it done so, diplomacy rather than
    litigation would have been the way to resolve the disagree-
    ment. The question for the Judicial Branch of this nation is
    simply whether Burke committed the crime of which he has
    been accused.
    B. Perjury Trap
    Burke next argues that the district court erred in denying
    his motion to dismiss the indictment on hit theory that the
    prosecution called him before the grand jury for the purpose
    of producing perjured testimony. According to the Ninth
    Circuit, a “perjury trap” is created when “the government
    calls a witness before a grand jury for the primary purpose
    of obtaining testimony from him in order to prosecute him
    later for perjury.” United States v. Chen, 
    933 F.2d 793
    , 796
    (9th Cir. 1991). We have not embraced this doctrine,
    however—see, e.g., United States v. Devitt, 
    499 F.2d 135
    ,
    140 (7th Cir. 1974); United States v. Nickles, 
    502 F.2d 1173
    (7th Cir. 1974)—and do not see any reason to adopt it now.
    Why would a prosecutor be forbidden to give a suspect an
    opportunity to commit the crime of perjury? Investigators
    offer opportunities to commit many offenses and may lead
    people toward their commission. Usually the offers concern
    drugs, weapons, or bribery, but the principle is not limited
    to these offenses. If the inducement is so powerful that it
    amounts to entrapment by overcoming the will of a person
    No. 03-3483                                                  7
    not already predisposed to commit the offense, while
    providing the means to a person who could not have
    committed the crime without assistance, then criminal
    punishment is not proper. United States v. Hollingsworth,
    
    27 F.3d 1196
    (7th Cir. 1994) (en banc). But if the suspect is
    predisposed to commit the offense, and could have commit-
    ted it without assistance, prosecution and conviction are
    appropriate. See, e.g., Mathews v. United States, 
    485 U.S. 58
    (1988); Hampton v. United States, 
    425 U.S. 484
    (1976);
    United States v. Murphy, 
    768 F.2d 1518
    (7th Cir. 1985).
    Burke has not raised an entrapment defense; his predispo-
    sition to lie is obvious, and he did not need the govern-
    ment’s aid in order to tell a lie. Indeed, it is knowledge of a
    suspect’s predisposition to commit a crime that, according
    to the Ninth Circuit, makes it wrongful for the prosecutor
    to offer the opportunity. Yet that turns the entrapment
    defense on its head, and giving the defense a new name
    (“perjury trap”) does not permit a court to contravene
    governing decisions such as Mathews and Hampton that
    treat predisposition as permitting, rather than blocking,
    criminal punishment.
    Should inducement to commit perjury differ from induce-
    ment to commit other offenses? Until recently some appel-
    late courts held that an “exculpatory no” could not
    be prosecuted as a crime, but Brogan v. United States,
    
    522 U.S. 398
    (1998), disapproved that doctrine. The court
    observed that there are many ways to challenge the govern-
    ment’s right to ask questions, but that lying is not among
    the valid ways. Just so here: If he deemed the prosecutor’s
    questions before the grand jury improper for any reason,
    Burke could have refused to answer and obtained a judicial
    decision on the subject. Instead he chose to lie, and he must
    live with the consequences of that choice.
    Another potential difference between perjury and other
    crimes is that only a request for material information can
    be the basis of a perjury charge. Burke does not contend,
    8                                                No. 03-3483
    however, that the prosecutor’s questions were immaterial
    to a subject within the grand jury’s legitimate concern.
    There is no statute of limitations for murder, so finding and
    prosecuting accomplices to Erickson’s conduct was a proper
    subject of an ongoing examination. That the prosecutors
    knew (or thought they knew) the answers to the questions
    they asked Burke does not make the information less
    material. Confirming tentatively held views— or uncovering
    information that will refute them—is altogether appropri-
    ate. See, e.g., United States v. R. Enterprises, 
    498 U.S. 292
    (1991). So the grand jury was entitled to seek Burke’s
    knowledge. That prosecutors strongly suspected that Burke
    would lie rather than reveal his knowledge does not make
    the questions improper, let alone enable him to escape the
    punishment that attaches to deceit when the grand jury is
    entitled to hear the truth.
    C. Evidence of Prior Bad Acts
    Burke contends that the district court erred by admitting
    evidence of his prior bad acts as proof that he committed
    perjury. The evidence proffered by the government included
    testimony from inmate Tai that Burke had offered to obtain
    for him a handcuff key in return for $10,000 and to connect
    Tai with a lawyer who could influence a judge in return for
    $350,000. The evidence also included testimony from
    inmate Gil that Burke had offered to obtain for him a
    passport and medicine that would make him sick and thus
    more likely to receive a reduced sentence. In addition, the
    district court admitted evidence that Burke faced substan-
    tial financial obligations as a result of his conduct prior to
    incarceration, which his mother helped him pay while he
    served his sentence. We review the district court’s eviden-
    tiary rulings for abuse of discretion. United States v.
    Williams, 
    238 F.3d 871
    , 874 (7th Cir. 2001).
    No. 03-3483                                                 9
    While evidence of a defendant’s prior bad conduct may not
    be admitted for purposes of showing action in conformity
    therewith, it may be used to show motive or a common
    scheme or plan pursuant to Federal Rule of Evidence
    404(b). United States v. Montani, 
    204 F.3d 761
    , 767 (7th
    Cir. 2000). We have held that evidence of prior bad acts is
    admissible where:
    (1) the evidence is directed toward establishing a
    matter in issue other than the defendant’s propensity to
    commit the crime charged, (2) the evidence shows that
    the other act is similar enough and close enough in time
    to be relevant to the matter in issue, (3) the evidence is
    sufficient to support a jury’s finding that the defendant
    committed the similar act, and (4) the probative value
    of the evidence is not substantially outweighed by the
    danger of unfair prejudice.
    United States v. Bursey, 
    85 F.3d 293
    , 296 (7th Cir. 1996).
    Burke contends that the proffered evidence failed to
    satisfy any of the above prongs and that the district court
    applied the wrong standard of proof in its analysis of the
    third prong.
    Burke’s overarching claim is that the government’s
    evidence had nothing to do with whether he committed
    perjury. The district court disagreed, and so do we. In order
    to prove its case, the prosecution had to demonstrate,
    among other things, that Burke lied when he told the grand
    jury that he never procured a handcuff key for Erickson. As
    the district court noted, the prior bad acts evidence prof-
    fered by the government was directed toward establishing
    Burke’s motive to obtain money from inmates and his
    methods of doing so. The evidence was sufficient to support
    a jury’s finding that Burke had in fact made the prior offers.
    Further, Burke’s prior conduct—including his offer to sell
    inmate Tai a handcuff key—was similar enough and close
    enough in time to be relevant to Burke’s discussions with
    Erickson.
    10                                                  No. 03-3483
    Burke’s primary challenge, however, goes to the standard
    of proof that the district court applied in analyzing the
    third-prong. The third prong of the test provides that prior
    acts evidence is admissible when it “is sufficient to support
    a jury finding that defendant committed [the] similar act.”
    United States v. Long, 
    86 F.3d 81
    , 83 (7th Cir. 1996). The
    district court interpreted that rule to mean that prior acts
    evidence is admissible where the jury could find “by a
    preponderance” that the defendant committed the similar
    act. The court’s interpretation was consistent with the
    holding in Huddleston v. United States, 
    485 U.S. 681
    (1988),
    where the Supreme Court rejected the clear and convincing
    evidence standard previously applied by this and other
    courts and held that the preponderance standard is appro-
    priate for determining the admissibility of prior acts
    evidence. 
    Id. at 690.
    In Huddleston, the relevance of the
    404(b) evidence hinged on a conditional fact determination.
    
    Id. Burke argues
    that Huddleston is inapplicable where the
    relevance of the 404(b) evidence is conditioned upon the
    defendant having actually committed the similar act. He
    maintains that in situations where the government proffers
    evidence relating to a substantive offense that neither a
    judge nor a jury had previously determined was committed,
    404(b) evidence is admissible only if a jury could determine
    “beyond a reasonable doubt” that the defendant commit-
    ted the similar act.
    The district court applied the correct standard under the
    facts in this case. The government sought to introduce
    404(b) evidence to establish that Burke offered to per-
    form various services, not to establish that he in fact
    performed those offers. Notably, Tai never accepted Burke’s
    offer to obtain a handcuff key, and Gil declined Burke’s offer
    for a passport and medication.2 The government did not
    2
    Tai did accept Burke’s offer to connect him with an attorney
    (continued...)
    No. 03-3483                                                    11
    introduce the evidence for the purpose of proving that
    Burke performed these offers, but rather to show his
    method of operation. Because Burke’s offers were not
    substantive offenses, the fact that they were made did not
    have to be proved beyond a reasonable doubt. However, if
    we were to assume for the sake of argument that the court
    applied the incorrect standard, then the error was harmless
    in light of the testimony given by inmates Rock and Taylor
    that Burke admitted to them that he had procured a
    smuggled handcuff key for Erickson. Trial Tr. at 1625-32,
    2157-60, 2257.
    D. Immunity for Burke’s Mother
    Burke contends that the government’s refusal to grant his
    mother immunity from prosecution prevented her
    from providing important exculpatory testimony on his
    behalf and thus distorted the trial’s fact-finding process.3
    He claims that his mother was prepared to testify that
    neither she nor her deceased husband ever had conversa-
    tions with Burke about bringing a handcuff key or contra-
    band into the MCC. We review refusals to grant im-
    munity to a defense witness for abuse of discretion. United
    States v. Hooks, 
    848 F.2d 785
    , 799 (7th Cir. 1988).
    The United States Attorney has authority to grant
    immunity to a witness; federal courts, by contrast, play only
    a ministerial role in ensuring that this power is properly
    2
    (...continued)
    who could supposedly bribe Tai’s judge, but this service was never
    performed either.
    3
    Burke also maintains that his mother did not testify because
    the district court lulled him into thinking that the stakes at
    trial were low. This argument merits no discussion in light
    of Burke’s hard-fought legal battles to avoid extradition.
    12                                               No. 03-3483
    exercised. 
    George, 363 F.3d at 671-72
    . Criminal defendants
    have a fundamental due process right to present witnesses
    who will testify on their behalf. 
    Hooks, 848 F.2d at 799
    .
    What is more, these witnesses must be free to testify
    without fear of retaliation. See, e.g., Webb v. Texas, 
    409 U.S. 95
    , 98 (1972) (reversing a conviction where the trial judge’s
    warnings to the defendant’s only witness deterred him from
    testifying). The prosecutor’s broad discretion to refuse
    immunity is limited by the defendant’s due process rights.
    United States v. Schweihs, 
    971 F.2d 1302
    , 1315 (7th Cir.
    1992). A defendant’s due process rights are violated when
    the prosecutor abuses his authority to immunize witnesses
    with the intention of distorting the fact-finding process. 
    Id. Although a
    federal court cannot order the government to
    immunize a defense witness, courts can dismiss an indict-
    ment where the prosecutor’s refusal to grant immunity has
    violated the defendant’s right to due process. United States
    v. Herrera-Medina, 
    853 F.2d 564
    , 568 (7th Cir. 1988).
    Burke maintains that the government’s decision to
    withhold immunity from his mother denied him access to
    exculpatory evidence and thus violated his due process
    rights. Burke, however, has failed to make the “substantial
    evidentiary showing” that is required to succeed on his
    claim. 
    Hooks, 848 F.2d at 802
    . As an initial matter, pros-
    ecutors have significant discretion to decline immunity to a
    witness, particularly one who—like Mrs. Eileen Burke—
    could be charged for perjury. 
    Id. (“It is
    well within the
    discretion of a prosecutor . . . to decline immunity to a
    witness who could be charged for false statement and
    perjury.”). Moreover, as the district court observed, there is
    no evidence that the government threatened Mrs. Burke or
    sought to intimidate her. See, e.g., 
    Webb, 409 U.S. at 97-98
    (finding due process violation where judge singled-out
    witness for lengthy admonishment of dangers of perjury).
    Instead, there are indications that her decision not to testify
    may have been strategic. For example, her attorney once
    No. 03-3483                                                13
    advised her to invoke her Fifth Amendment rights if
    questioned about the handcuff key. Trial Tr. at 2350. She
    had also made demonstrably false statements about always
    visiting her son in the presence of his father which the
    government could have used to attack her credibility. Trial
    Tr. at 1472-73. The prosecution’s refusal to absolve wit-
    nesses of their responsibility to testify truthfully does not
    impermissibly distort the fact-finding process. See United
    States v. Taylor, 
    728 F.2d 930
    , 935 (7th Cir. 1984) (finding
    that prosecutor’s decision to revoke immunity of witness
    who testified falsely was not in bad faith and thus with-
    in bounds of discretion). We find that the prosecutor did not
    abuse his discretion in refusing to grant Mrs. Burke
    immunity.
    E. Prosecutorial Misconduct
    Burke argues that the government presented testimony
    to the grand jury and at trial that was untrue and then
    failed to correct the statements. The government’s knowing
    use of false testimony, or failure to correct testimony,
    violates due process. United States v. Thomas, 
    987 F.2d 1298
    , 1300 (7th Cir. 1992) (citing Giglio v. United States,
    
    405 U.S. 150
    , 153 (1972)); United States v. Bontkowski, 
    865 F.2d 129
    , 133-34 (7th Cir. 1989); see also United States
    v. Williams, 
    504 U.S. 36
    (1992). However, we will not set
    aside a verdict and order a new trial unless the defendant
    establishes that: (1) the prosecution’s case included perjured
    testimony; (2) the prosecution knew or should have known
    of the perjury; and (3) there is a reasonable likelihood that
    the false testimony could have affected the judgment of the
    jury.” Shasteen v. Saver, 
    252 F.3d 929
    , 933 (7th Cir. 2001).
    We review the district court’s refusal to dismiss the indict-
    ment or to grant a new trial based on prosecutorial miscon-
    duct for an abuse of discretion. United States v. Sandoval,
    
    347 F.3d 627
    , 631 (7th Cir. 2003). In conducting our
    14                                               No. 03-3483
    analysis, we must accept the district court’s findings of fact
    unless they are clearly erroneous. United States v.
    Balistrieri, 
    779 F.2d 1191
    , 1225 (7th Cir. 1985).
    1. Tai’s Trial Testimony
    Tai testified at trial that he had met Burke’s parents
    three times in the visiting room of the MCC. Following his
    conviction, Burke moved for a new trial. He claimed that
    the government knew Tai’s testimony was false because Tai
    and Burke lived on different floors of the MCC and, accord-
    ing to the MCC standard schedule, had different visiting
    days. The district court found that Tai had not testified
    falsely because, regardless of the standard schedule, MCC
    visiting records and Tai’s contemporaneous calendar notes
    reflected that Tai was in fact present in the visiting room on
    four separate occasions when one or both of Burke’s parents
    were present. R. at 200: 9. The court offered as a possible
    explanation the fact that Tai claimed to be able to visit any
    time he wanted with “Korean attorneys” who had nothing
    to do with his case but were often in the building. Id.; Tr. at
    1115-16. In addition, the court found that there was no
    likelihood that Tai’s testimony had any affect on the jury
    because it was tangential to the government’s case. R. at
    200: 9.
    Burke argues that the only reasonable explanation for the
    apparent discrepancy in the MCC standard schedule on the
    one hand and the MCC visiting records and Tai’s calendar
    on the other is that Tai lied, because inmate visits with
    attorneys were typically not conducted in the main visiting
    room. The discrepancy is mysterious, but we agree with the
    district court’s conclusions. Moreover, there is no reason to
    believe that Tai’s testimony had any impact on the jury
    whatsoever. The comment was a brief aside that Tai made
    during cross-examination that proved nothing more than
    No. 03-3483                                              15
    the fact that Burke was visited by his parents, which was
    undisputed. Consequently, the court’s denial of Burke’s
    motion for a new trial was not an abuse of discretion.
    2. Special Agent Hardgrave’s Grand Jury Testi-
    mony
    Burke also claims that the district court erred in failing
    to dismiss the indictment after FBI Special Agent Richard
    Hardgrave testified falsely before the grand jury. A grand
    juror asked Agent Hardgrave whether the FBI’s investiga-
    tion had uncovered any information implicating someone
    other than Burke’s parents as the source of the handcuff
    key. Agent Hardgrave responded that the FBI “had no
    further leads” regarding how Burke had obtained the key.
    He also stated that “we haven’t had any statement from any
    other people indicating anyone else” but Burke’s parents
    smuggled the handcuff key into the MCC. Burke argues
    that this testimony was false because several individuals
    had made statements to the FBI about the possible source
    for the handcuff key. The district court determined that
    Agent Hardgrave had not testified falsely because the FBI
    had concluded that the other leads were unreliable. R. at
    137: 12-13. The court also noted that the grand jury was not
    misled because Agent Hardgrave acknowledged that the
    FBI had no real proof that Burke himself had the key. 
    Id. at 13.
      Burke challenges the district court’s conclusion with
    evidence of additional leads that the FBI had but which
    Agent Hardgrave failed to disclose to the grand jury. For
    example, statements were made that the key came from
    an MCC guard named Huff and that Erickson pur-
    chased the key from a person in Cicero, Illinois. We are
    unpersuaded. The government obtained the information
    about Officer Huff after Agent Hardgrave testified and
    received the lead on the second theory only the week before
    16                                               No. 03-3483
    Hardgrave testified, which explains why Agent Hardgrave
    might not have known about it. Thus, there is no evidence
    that the court abused its discretion in denying Burke’s
    motion to dismiss the indictment.
    F. The Jencks Act Claim
    Burke argues that the district court thwarted his right to
    cross-examine the government’s witnesses by denying his
    request for the government witnesses’ pre-sentence reports.
    He maintains that the district court’s failure to produce the
    reports constituted a violation of the Jencks Act, 18 U.S.C.
    § 3500, and entitles him to a new trial. We review the
    district court’s denial of a motion requesting the production
    of witness statements for abuse of discretion. United States
    v. Wables, 
    731 F.2d 440
    , 447-48 (7th Cir. 1984).
    The Jencks Act provides in relevant part:
    After a witness called by the United States has testified
    on direct examination, the court shall, on motion of the
    defendant, order the United States to produce any
    statement (as hereinafter defined) of the witness in the
    possession of the United States which relates to the
    subject matter as to which the witness has testified.
    18 U.S.C. § 3500(b). The Act defines a statement as “a
    written statement made by said witness and signed or
    otherwise adopted by him.” 18 U.S.C. § 3500(e)(1). We have
    recently held that the Act does not require disclosure of the
    pre-sentence reports of cooperating witnesses to defendants,
    as they do not qualify as “statements” within the meaning
    of the Act. United States v. McGee, 
    408 F.3d 966
    , 974 (7th
    Cir. 2005). Our decision in McGee also stated our commit-
    ment to safeguarding the confidentiality of pre-sentence
    reports. 
    Id. at 973.
    We noted, however, that if a defendant
    believes that a pre-sentence report contains Brady material,
    he may request that the district court review the report in
    No. 03-3483                                                17
    camera to ascertain whether his suspicions have merit. 
    Id. at 974
    (citing United States v. Anderson, 
    724 F.2d 596
    , 598
    (7th Cir. 1984)).
    Although it is unclear from the briefs, Burke appears
    to have made a blanket request for the pre-sentence reports
    of approximately 15 of the government’s witnesses. Pretrial
    Trans. 10/15/02 at 17. The transcript of the pretrial proceed-
    ing reveals that the district court had some misgivings
    about the request and did not believe that she had author-
    ity to order other judges to produce defendants’ pre-sen-
    tence reports. 
    Id. at 78.
    Yet, rather than close the door
    completely on Burke’s request, the court directed Burke to
    obtain the reports from the individual judges. 
    Id. at 82.
    The
    court acknowledged that this might take some time and
    expressed that she might grant Burke additional time if he
    needed it. 
    Id. at 78.
    Although Burke’s attorney stated that
    he would try to comply with the court’s order, there is no
    evidence that he submitted further requests for the materi-
    als. 
    Id. at 82.
    In light of our ruling in McGee, the breadth of
    Burke’s request, and his lack of diligence, we find that the
    court’s denial of Burke’s motion was not an abuse of
    discretion.
    G. The Materiality of Count Two
    Burke contends that Count Two of the superseding
    indictment was immaterial to the grand jury’s investigation
    and therefore should have been dismissed. Count
    Two charged Burke with perjury based on the following
    question and answer:
    Q. Did you ever tell an inmate that you could smuggle
    contraband into the MCC?
    A. No, I did not.
    R. at 21. Burke maintains that the word “ever” in the count
    implicates statements that he made not only before
    18                                               No. 03-3483
    Erickson’s escape attempt, but also afterward. Because
    the grand jury’s investigation was limited to crimes that
    occurred “before and during Erickson’s escape attempt,” 
    id., Burke argues
    that his statements after the escape attempt
    were immaterial. Whether a statement is material for
    purposes of perjury is a mixed question of law and fact
    which we review de novo. United States v. Gaudin, 
    515 U.S. 506
    , 511-14 (1995).
    To be perjurious, a defendant’s testimony must be
    material to the grand jury’s investigation. United States v.
    McComb, 
    744 F.2d 555
    , 563 (7th Cir. 1984). Materiality
    in this context is broadly defined as a statement’s “effect or
    tendency to impede, influence, or dissuade the grand jury
    from pursuing its investigation.” 
    Id. Even potential
    interfer-
    ence with a line of inquiry can establish materiality. 
    Id. The government
    can establish materiality by identifying a nexus
    between the defendant’s purportedly false statement and
    the scope of the investigation. 
    Id. at 564.
      Rock and Taylor were inmates with Burke at the MCC
    after he was extradited. They testified that Burke told them
    he had smuggled the Erickson handcuff key into the MCC
    several years prior. Trial Tr. at 1625-32, 2157-60, 2257. The
    testimonies given by Rock and Taylor were clearly material
    to the grand jury’s investigation because they spoke directly
    to the issue of how Erickson escaped. By the same token,
    Burke’s denial that he told Rock and Taylor that he could
    smuggle contraband into the MCC was material because it
    had the potential to deflect suspicion that he procured the
    handcuff key for Erickson. Even though Burke made his
    statements to Rock and Taylor several years after the
    escape attempt, those statements related back to the time
    period that was material to the grand jury’s investigation.
    The district court correctly determined that Count Two was
    material to the investigation and denied Burke’s motion to
    dismiss that count from the indictment.
    No. 03-3483                                                 19
    H. Sufficiency of the Evidence
    Burke argues that the evidence presented at trial was
    insufficient to sustain his convictions, particularly his
    conviction for Count Five. This court reviews a jury’s
    determination for sufficiency of evidence “in the light
    most favorable to the government and uphold[s] a jury’s
    decision if ‘any rational trier of fact could have found
    the essential elements of the crime beyond a reasonable
    doubt.’ ” United States v. Albarran, 
    233 F.3d 972
    , 975 (7th
    Cir. 2000) (quoting Jackson v. Virginia, 
    443 U.S. 307
    , 319
    (1979)). We will overturn a jury’s verdict only if we find that
    “the record contains no evidence, no matter how the
    evidence is weighed, from which the jury could have found
    guilt beyond a reasonable doubt.” 
    Id. at 975.
    We review
    the district court’s evidentiary rulings for abuse of discre-
    tion. 
    Williams, 238 F.3d at 874
    .
    There is no question that the record contains sufficient
    evidence in support of Burke’s conviction on each of the five
    counts of perjury. There was abundant testimony that
    Burke offered to smuggle into the MCC a wide range of
    contraband, including handcuff keys. Further, inmates Rock
    and Taylor testified that Burke told them that his mother
    played a critical role in bringing into the building the
    handcuff key that Erickson used in his escape attempt.
    Moreover, several inmates stated that they saw and heard
    Erickson and Burke arguing in the days immediately prior
    to the escape attempt about a debt and the outrageous price
    of an item that Burke had provided.
    Burke focuses on Count Five because it required that
    the jury find not merely that he told others that he had
    provided Erickson with the handcuff key, but that he had in
    fact procured the key for Erickson. The questions and
    answers contained in Count Five read as follows:
    Q. Did you provide Mr. Erickson with a handcuff key?
    A. No, I did not.
    20                                               No. 03-3483
    Q. Did you assist in any way in making a handcuff key
    available to any inmate in the MCC?
    A. No, I did not.
    R. at 21. This admission to Rock and Taylor provided the
    jury with a rational basis to conclude that Burke was ly-
    ing when he denied providing Erickson with the handcuff
    key. Furthermore, the jury was adequately instructed
    that they had to find each perjury element, including the
    false nature of the declaration contained in Count Five,
    beyond a reasonable doubt. We are convinced that the
    government’s evidence was sufficient to support a conviction
    on Count Five.
    Burke also contends that the evidence was insufficient
    because the government’s entire case was based upon the
    unreliable testimony of inmates who stood to benefit from
    cooperating with the government. Again, we disagree. It
    is not the business of this court to second-guess the jury’s
    credibility determinations. The jury had sufficient reason to
    find that the testimony given by the government’s witnesses
    was credible. Tai, Lutrell, and Hogan had all been released
    from prison by the time they testified, so they had little or
    nothing to gain by testifying. Also, their stories, along with
    those of their fellow inmates, were corroborated. For
    example, Tai, Rock, and Taylor corroborated their testimony
    with contemporaneous documents that they had either
    written themselves or received from Burke. Significantly,
    the two sets of inmates—the first set who knew Burke at
    the MCC before his initial release on parole and the second
    set who met him after he was extradited—had never met
    each other and had served their sentences at different
    times. Despite that fact, the testimonies they gave were
    remarkably consistent. For these reasons, we believe that
    the government’s evidence was credible and sufficient to
    support the jury’s decision to convict Burke on five counts
    of perjury.
    No. 03-3483                                                21
    I. The Booker Claim
    Burke argues that his sentence violated the Sixth Amend-
    ment as interpreted in United States v. Booker. The district
    court sentenced him to 240 months’ imprisonment pursuant
    to the Sentencing Guidelines. Because Burke was being
    sentenced for perjury, the Guidelines directed the district
    court to apply the guideline relevant to the criminal offense
    with respect to which the defendant gave false testimony.
    U.S.S.G. § 2J1.3(c)(1). The court chose to apply the cross-
    reference for aggravated assault, which generated a base
    offense level of 15. U.S.S.G. § 2A2.2(a). The court’s applica-
    tion of the aggravated assault guideline triggered additional
    enhancements for more than minimal planning (2 points),
    discharge of a firearm (5 points), and bodily injury
    (6 points); however, the guideline capped the cumulative
    adjustment for the firearm and bodily injury enhancements
    at 9 points. U.S.S.G. § 2A2.2(b). That yielded an offense
    level of 26, which the court reduced to 20 because Burke
    was an accessory after the fact. 
    Id. The district
    court then
    applied enhancements for obstruction of justice (2 points,
    § 3C1.1), official victim (3 points, § 3A1.2(a)), and reckless
    endangerment (2 points, § 3C1.2), as well as upward
    departures for disruption of a governmental function
    (2 points, § 5K2.7) and the deaths of Officer Belluomini
    (2 points) and Officer Frakes (2 points). All told, the ad-
    justments yielded a total offense level of 33.
    Next, the district court selected a criminal history
    category. The Guidelines indicated that a criminal history
    category IV was appropriate because Burke committed the
    offenses while under court supervision. The court, however,
    believed that would significantly under-represent Burke’s
    criminal past and likelihood of recidivism. Accordingly, the
    court departed upward to a criminal history category V,
    which—in combination with the total offense level of
    33—generated a sentencing range of 210 to 262 months.
    The court sentenced Burke in the middle of that range.
    22                                                No. 03-3483
    The district court stated in her sentencing memoran-
    dum that the Guidelines “directed” her to apply a cross-
    reference guideline. This suggests that the court applied the
    Guidelines in a mandatory fashion, which we now know was
    error. United States v. Castillo, 
    406 F.3d 806
    , 823 (7th Cir.
    2005). Burke, however, preserved this argument below by
    objecting to his sentence on the grounds that it violated
    Apprendi v. New Jersey, 
    530 U.S. 466
    (2000), which pres-
    aged Booker. Thus, we review for harmless error. United
    States v. Schlifer, 
    403 F.3d 849
    , 854 (7th Cir. 2005). An
    error is harmless only if it did not affect the district court’s
    choice of sentence. 
    Id. (citing United
    States v. Smith, 
    332 F.3d 455
    , 460 (7th Cir. 2003)). While the court gave
    thoughtful consideration to its choice of a cross-referencing
    guideline and indicated its approval of several of the
    enhancements, the government has not established that the
    court would impose the same sentence had the Guidelines
    been merely advisory. See United States v. Larson, 
    417 F.3d 741
    , 746-47 (7th Cir. 2005) (recognizing that the govern-
    ment bears the burden of establishing that error was
    harmless). Because the court’s error was not harmless, we
    vacate Burke’s sentence and remand for resentencing
    consistent with Booker.
    III. Conclusion
    For the foregoing reasons, we AFFIRM Burke’s convic-
    tion but VACATE his sentence and REMAND to the district
    court for resentencing consistent with Booker.
    No. 03-3483                                         23
    A true Copy:
    Teste:
    ________________________________
    Clerk of the United States Court of
    Appeals for the Seventh Circuit
    USCA-02-C-0072—9-28-05