United States v. Xianbing Gan ( 2022 )


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  •                                In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________________
    No. 21-1990
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    XIANBING GAN,
    Defendant-Appellant.
    ____________________
    Appeal from the United States District Court for the
    Northern District of Illinois, Eastern Division.
    No. 1:18-cr-00781-1 — Thomas M. Durkin, Judge.
    ____________________
    ARGUED SEPTEMBER 7, 2022 — DECIDED NOVEMBER 23, 2022
    ____________________
    Before SYKES, Chief Judge, and HAMILTON and BRENNAN,
    Circuit Judges.
    HAMILTON, Circuit Judge. A jury convicted defendant-ap-
    pellant Xianbing Gan on three counts of money laundering
    and one count of operating an unlicensed money transmitting
    business, but acquitted him on one count of participating in a
    money laundering conspiracy. He was sentenced to 168
    months in prison. Gan raises four issues on appeal: whether a
    law enforcement expert improperly provided testimony
    2                                                No. 21-1990
    interpreting communications the jury could have understood
    itself; whether a jury instruction misstated the mens rea re-
    quired for the money-laundering convictions; whether the
    prosecutor made improper remarks during closing; and
    whether the district court erred by considering the acquitted
    conspiracy conduct at sentencing.
    We affirm Gan’s convictions and sentence. There was no
    plain error in the challenged expert testimony. Gan waived
    his jury instruction challenge. The prosecution’s closing re-
    marks were not improper. And finally, binding Supreme
    Court precedent allows consideration of acquitted conduct at
    sentencing when, as in this case, the judge finds the conduct
    proved by a preponderance of the evidence. In Part I, we pro-
    vide factual and procedural background relevant to Gan’s
    challenges. In Parts II through V, we consider each of Gan’s
    four challenges.
    I. Factual and Procedural Background
    Gan lived in Mexico and worked with business associates
    in the United States to launder money for drug trafficking or-
    ganizations. One of Gan’s couriers began cooperating with
    the government and participated undercover in three cash
    pickups coordinated by Gan. Recordings from those under-
    cover operations and testimony from the courier were central
    to the government’s case for the counts on which Gan was
    convicted.
    A. The Money Laundering Method
    It is helpful to understand the money laundering method
    used by Gan. His challenges include claims that expert testi-
    mony undermined his defense of entrapment and that the
    jury could have believed he acted “knowingly” but not
    No. 21-1990                                                 3
    “willfully.” Yet his use of complex concealment procedures
    during the recorded transactions tends to show that Gan was
    not a novice in this scheme.
    Gan and his associates used so-called “mirror transac-
    tions” to launder money across international borders for drug
    trafficking organizations. In a mirror transaction, a drug traf-
    ficking organization delivers cash to a courier for a money
    laundering organization. That courier in turn gives the money
    to a business in need of cash. That business then transfers an
    equivalent amount of another currency to a foreign bank ac-
    count belonging to a member of the money laundering organ-
    ization. The account owner then withdraws the money in cash
    and hands it back over to the drug trafficking organization.
    No paper trail connects the final cash in the hands of the drug
    trafficking organization with the cash it originally obtained in
    exchange for drugs.
    In early 2016, Gan recruited Seok Pheng Lim to work as a
    courier. She was told to expect to conduct one to two transac-
    tions per week, each ranging from $100,000 to $1 million. Lim
    would receive United States currency from a drug trafficking
    organization and give that cash to an American business that
    would deposit an equivalent amount of Chinese renminbi
    into a Chinese bank account. The money laundering organi-
    zation would withdraw the renminbi as “clean” United States
    or Mexican currency to give back to the drug trafficking or-
    ganization.
    Each cash hand-off involved a series of communications
    designed to maintain anonymity and security. For each trans-
    action, Lim bought a “burner” phone and made up a false
    name that she communicated to Gan. Gan would give his con-
    tact at the drug trafficking organization that code name and
    4                                                    No. 21-1990
    the number of Lim’s burner phone. When Lim’s phone rang
    and the voice on the other end uttered the code, she would
    arrange a meeting time and place. The day of the hand-off,
    Lim would send Gan the serial number of a one-dollar bill in
    her possession. Gan would pass that number to the drug traf-
    ficking organization. When Lim and the drug trafficking cou-
    rier met, Lim would show the bill to verify that she was the
    correct courier to receive the cash. Lim would exchange that
    dollar bill for the large sum of cash, with the dollar bill acting
    as proof that the hand-off occurred.
    The money laundering business in which Gan, Lim, and
    others were involved had multiple contacts with law enforce-
    ment prior to the transactions at issue. In early 2017, authori-
    ties seized over $1 million from transactions involving this
    money laundering organization. In May 2018, authorities ap-
    proached Lim and she began cooperating. Acting undercover,
    she contacted Gan and recorded discussions about future
    cash pickups. Recordings relating to three cash exchanges in
    May and June 2018 formed the basis for the money launder-
    ing charges at issue, though ample evidence—including the
    ease with which Gan facilitated these complex transactions—
    indicated that Gan had prior involvement.
    B. Gan’s Trial
    A federal grand jury returned a five-count indictment
    against Gan. Count I alleged participation in a money laun-
    dering conspiracy under 
    18 U.S.C. § 1956
    (h). Counts II
    through IV alleged that Gan participated in three money laun-
    dering transactions in violation of 
    18 U.S.C. § 1956
    (a)(1)(B)(i)
    and (a)(1)(B)(ii). Count V charged Gan with conducting an
    unlicensed money transmitting business under 
    18 U.S.C. § 1960
    (a). Gan pleaded not guilty and took his case to trial.
    No. 21-1990                                                5
    The jury acquitted Gan on the Count I conspiracy charge.
    The government presented evidence to support the conspir-
    acy charge during direct examination of a Department of
    Homeland Security agent who testified as an expert on money
    laundering organizations. The agent testified about tran-
    scripts from intercepted communications between other
    members of the money laundering organization. These tran-
    scripts did not contain messages sent or received directly by
    defendant Gan himself, but the participants in the conversa-
    tions discussed Gan and his involvement.
    The jury convicted Gan on Counts II through V for the
    three recorded money laundering transactions and conduct-
    ing the associated unlicensed money transmitting business.
    Lim testified against Gan by describing her role as a courier
    in these three transactions and many prior, uncharged trans-
    actions. Lim’s testimony detailed the complex procedures
    used in the money hand-offs and demonstrated that Gan ar-
    ranged for the drug organization clients to meet with her to
    drop off the money. Lim also described other conversations
    with Gan about the money laundering. These conversations
    made clear that Gan was intentionally engaging in money
    laundering for drug trafficking organizations and even seek-
    ing out opportunities to expand the operation.
    As just one example, Lim walked the jury through a tran-
    script of a conversation in which Gan used racist language to
    describe the demographics of Detroit, concluding that “there
    will be products” there because “Law and order are not
    good.” Lim testified that she understood “products” to mean
    “drug money.” Gan’s role in money laundering was clear
    from Lim’s testimony, itself corroborated by intercepted
    6                                                 No. 21-1990
    communications and recordings of the three transactions in
    which Lim participated undercover.
    II. Law Enforcement Expert Testimony
    Gan challenges some expert testimony provided by the
    Department of Homeland Security agent. Gan does not chal-
    lenge the agent’s qualification as an expert, her general testi-
    mony explaining money laundering operations, or her inter-
    pretation of coded language in intercepted communications.
    He instead contends that the agent improperly went beyond
    translating code words and phrases and provided wholesale
    interpretations of uncoded communications that the jury
    should have been left to interpret on its own.
    A. Background
    It is well established that, with a sufficient foundation, a
    law enforcement expert may explain the methods and the jar-
    gon and code words used in complex or unfamiliar criminal
    enterprises. E.g., United States v. York, 
    572 F.3d 415
    , 421–23
    (7th Cir. 2009) (explaining that law enforcement experts may
    testify to “the meaning of drug code words”); United States v.
    Winbush, 
    580 F.3d 503
    , 510–11 (7th Cir. 2009) (“Our court has
    long recognized that testimony regarding the methods used
    by drug dealers is helpful to the jury and therefore a proper
    subject of expert testimony.”); United States v. Romero, 
    189 F.3d 576
    , 584–85 (7th Cir. 1999) (recognizing “the value of ex-
    pert testimony in explaining a complicated criminal method-
    ology”). Such testimony is proper under Federal Rule of Evi-
    dence 702 when it helps the jury “to understand the evi-
    dence.”
    Expert testimony ordinarily is not needed, though, to pro-
    vide an “interpretation” of an unambiguous term or phrase
    No. 21-1990                                                   7
    that jurors can understand without expert help. See, e.g., York,
    
    572 F.3d at 423
    , citing United States v. Rollins, 
    862 F.2d 1282
    ,
    1292 (7th Cir. 1988). Such testimony is not, in terms of Rule
    702, helpful to a jury. Similarly, an expert witness may not
    provide an interpretation of an ambiguous or obscure word
    or phrase that is not based upon the witness’s expertise. Such
    interpretations “would merely put an expert gloss on a con-
    clusion the jury should draw.” 
    Id.
    Whether an expert’s testimony is permissible under Rule
    702 depends upon whether it would be helpful to the jurors
    who lack the expert’s knowledge of and experience with the
    relevant criminal enterprise. At the same time, in the flow of a
    trial, the boundaries between proper and improper opinion
    testimony are not always sharp. Counsel and the trial judge
    often may not care too much about exactly how the expert’s
    testimony is structured or limited. We therefore review only
    for an abuse of discretion a district judge’s decisions policing
    that boundary. York, 
    572 F.3d at 429
    ; Rollins, 862 F.2d at 1292.
    Even if the fuzzy boundary was crossed, we will not reverse
    if the error was harmless. York, 
    572 F.3d at
    429–30.
    The government argues that Gan waived his challenge to
    the expert testimony, but we do not agree. Although Gan did
    not deliberately waive this issue, counsel did not object to the
    vast majority of the testimony challenged on appeal. There
    was one objection raised at a sidebar by Gan’s counsel to the
    agent characterizing certain messages as “important.” The
    judge properly overruled this objection, stating that as “an ex-
    pert offering an opinion, she can differentiate unimportant
    and important parts of a conversation.” This objection did not
    preserve for appellate review the broader objections Gan ar-
    gues on appeal. As a result, we review the district court’s
    8                                                    No. 21-1990
    admission of the expert testimony under the plain-error
    standard. See, e.g., United States v. Garcia-Avila, 
    737 F.3d 484
    ,
    488 (7th Cir. 2013). “On plain-error review, we may reverse if:
    (1) an error occurred, (2) the error was plain, (3) it affected the
    defendant’s substantial rights, and (4) it seriously affected the
    fairness, integrity, or public reputation of the proceedings.”
    United States v. Thomas, 
    933 F.3d 685
    , 690 (7th Cir. 2019), citing
    United States v. Olano, 
    507 U.S. 725
    , 732–38 (1993).
    If Gan had raised at trial the objections he raises on appeal,
    and if they had had merit, it would have been easy for the
    court and prosecution to make adjustments. It rarely makes
    sense for an appellate court to find plain error and order a
    new trial based on a failure to raise such easily corrected ob-
    jections. In terms of plain-error review, we are not saying
    there were errors, let alone plain ones, at steps one and two.
    We decide the issue on the ground that we find at step three
    no effect on Gan’s substantial rights, and we find at step four
    that the district court’s handling of this witness did not seri-
    ously impugn the fairness, integrity, or public reputation of
    judicial proceedings. See generally Olano, 
    507 U.S. at 736
    . Un-
    der either an abuse-of-discretion or plain-error standard of re-
    view, a harmless error does not merit reversal. United States v.
    Causey, 
    748 F.3d 310
    , 319–20, 322 (7th Cir. 2014) (affirming
    conviction where handling of government witness’s dual-role
    testimony was harmless error). An error is harmless if an av-
    erage juror would not have found the prosecution’s case “sig-
    nificantly less persuasive” without the improper testimony.
    
    Id. at 319
    , quoting York, 
    572 F.3d at 429
    .
    During the agent’s testimony, the government introduced
    transcripts of intercepted communications that were not sent
    or received by Gan but that discussed his participation in the
    No. 21-1990                                                 9
    money laundering. The prosecutor followed a pattern of read-
    ing a few messages aloud and then asking the agent whether
    she had an opinion as to what was discussed. She would reply
    “yes,” and the prosecutor would then ask what that opinion
    was. The agent would rephrase and summarize the messages,
    and the prosecutor would follow up, asking how she reached
    her conclusions. If the messages contained coded language,
    she would explain the code. These exchanges contained a
    combination of helpful decoding of jargon alongside rephras-
    ing of the messages’ clear, noncoded contents.
    As one example of how the messages were introduced
    during the agent’s direct examination, the prosecutor read an
    exchange where a participant said: “I have another transac-
    tion. Can it be done? It’s in the windy. For 300.” The other
    participant confirmed that yes, the transaction was possible,
    and the first participant said: “The meeting on Tuesday in
    Chicago is confirmed.” The prosecutor asked the agent for her
    “opinions” of what was “going on” in that conversation. The
    agent summarized: “This is a conversation … discussing a
    money pickup in Chicago for $300,000.” When asked how she
    reached that conclusion, the agent explained that “windy” is
    “coded language for Windy City, Chicago” and that “‘300’ is
    going to be $300,000. It’s very common for money launderers
    to drop zeros. I’ve seen this a lot of times.”
    B. Analysis
    By reading blocks of messages aloud and then asking the
    agent to summarize their contents, the prosecutor invited in-
    terpretations of all language, coded or not. The procedure of-
    fered advantages in terms of faster, more concise presentation
    of evidence, but it also made at least some interpretation of
    unambiguous, noncoded language inevitable.
    10                                                No. 21-1990
    If Gan’s counsel had objected at trial, the fix would not
    have been difficult. Questions could have been narrowed so
    that the agent would have been asked to interpret only coded
    phrases and jargon rather than entire unambiguous, non-
    coded conversations. The examination of the agent would
    have taken longer, but the same substance would have been
    presented to the jury.
    Without pertinent objections at trial, Gan could prevail on
    appeal only if he could show that the now-challenged testi-
    mony affected his substantial rights, meaning that it preju-
    diced him. Because Gan cannot show prejudicial effect, we
    need not apply the first and second steps of plain-error review
    to decide whether there were any clear or plain errors. We
    find no prejudice for three principal reasons.
    First, the testimony challenged on appeal was most rele-
    vant to the conspiracy charge on which Gan was acquitted.
    The counts of conviction were supported by Lim’s testimony
    and transcripts of communications involving Gan directly
    that Lim, not the agent, testified about. Gan argues that the
    agent’s testimony affected his convictions by suggesting he
    was predisposed to commit money laundering and under-
    mining his defense of entrapment. But Gan challenges only
    specific parts of the agent’s testimony. He has not explained
    why these portions rather than her other permissible testi-
    mony suggested Gan was predisposed to commit money
    laundering based on his prior involvement in the operation.
    The agent’s uncontested general testimony—including
    about how money launderers use serial numbers on dollar
    bills as identification and other methods of concealing their
    identities while assuring the security of the money—matched
    the methods that Gan used with Lim while she carried out
    No. 21-1990                                                  11
    money hand-offs undercover. Gan’s familiarity with those
    procedures tended to prove that he had prior experience in
    money laundering, undermining the entrapment defense.
    Additionally, Lim’s testimony confirmed that before she be-
    came a cooperating witness, Gan had directed multiple
    money hand-offs for which she served as the courier. Gan’s
    experience with and predisposition for illegal money laun-
    dering were brought out in many ways during the trial, inde-
    pendent of the challenged testimony from the agent.
    Second, the agent did not work on investigating Gan’s
    case, so she did not testify in a dual role as both a lay and
    expert witness, where the risk of unfair prejudice can be
    “more troublesome.” Garcia-Avila, 737 F.3d at 489. Gan’s chal-
    lenge to the agent’s testimony relies heavily on our prece-
    dents concerning dual-role testimony in which an agent testi-
    fies to her lay opinions based on observations during the rel-
    evant investigation and to her expert opinions based on career
    experience. In those cases, we have recognized a risk that if it
    is not clear to jurors whether the witness is testifying in an
    expert or lay capacity in answering a question, the jurors
    could be confused about the basis of the testimony. E.g., York,
    
    572 F.3d at 425
     (noting how the “witness’s dual role might
    confuse the jury”).
    For example, if the witness translates code words from
    messages sent by the defendant, the jury might assume that
    the witness is relying on facts outside the trial evidence (such
    as perhaps interrogations of the defendant or others) rather
    than on prior experience with similar cases. The jury might
    give special weight to this witness’s testimony, assuming that
    she based her opinions on information not presented at trial.
    More generally, the jury could be “smitten by an expert’s
    12                                                   No. 21-1990
    ‘aura of special reliability.’” York, 
    572 F.3d at 425
    , quoting
    United States v. Brown, 
    7 F.3d 648
    , 655 (7th Cir. 1993). The ju-
    rors could then have difficulty in examining the evidence in-
    dependently and critically. See Smith v. Ford Motor Co.,
    
    215 F.3d 713
    , 718 (7th Cir. 2000) (noting that the “soundness
    of the factual underpinnings of the expert’s analysis and the
    correctness of the expert’s conclusions based on that analysis
    are factual matters to be determined by the trier of fact”).
    Those potential concerns call for care in managing dual-role
    testimony from law enforcement, though they should not be
    difficult to manage in response to timely objections. See gen-
    erally United States v. Jett, 
    908 F.3d 252
    , 268–70 (7th Cir. 2018)
    (suggesting procedures and jury instructions to help manage
    risks of dual-role testimony).
    In this case, however, the agent testified only as an expert,
    not as a fact witness. Her role as an expert who did not par-
    ticipate in the case investigation was made crystal clear sev-
    eral times during her testimony. The judge also drove the
    point home, telling the jury that her testimony was “general
    testimony, not relating to this—the alleged scheme in this case
    or this defendant … And this defendant can only be convicted
    on evidence directly relating to his participation in [ ] a con-
    spiracy.” The clarity of the agent’s lack of participation in the
    investigation removes concerns that the jury might have as-
    sumed she had knowledge of facts outside of evidence affect-
    ing her interpretations of messages.
    The related third reason that the handling of the agent’s
    opinions did not prejudice Gan is that we assume juries fol-
    low the instructions they are given, absent evidence to the
    contrary. E.g., United States v. Ajayi, 
    808 F.3d 1113
    , 1123
    (7th Cir. 2015). The district judge instructed this jury to
    No. 21-1990                                                   13
    analyze the agent’s testimony “the same way you judge the
    testimony of any other witness.” The instructions also told ju-
    rors to consider her “qualifications, how she reached her
    opinions and conclusions,” and her believability. The jurors
    were free to interpret the messages differently than the agent
    did and to discount her testimony, especially if they felt that
    her expertise did not give her an advantage in interpreting
    communications without code words or jargon.
    Given the strong evidence against Gan presented outside
    of the challenged testimony, the fact that the testimony ad-
    dressed a count on which Gan was acquitted, the lack of more
    concerning dual-role testimony, and the jury instructions
    guarding against accepting the agent’s testimony without
    critical analysis, we find no reversible error in admitting her
    testimony.
    III. Mens Rea in the Aiding and Abetting Instruction
    Next, Gan argues that his convictions should be reversed
    because a jury instruction erred in describing the mental state
    required to convict him on a theory that he aided and abetted
    the money laundering. Gan’s counsel never objected to the in-
    struction and in fact approved it before it was given.
    Federal Rule of Criminal Procedure 30 governs the deter-
    mination of jury instructions in criminal trials and sets forth
    how to preserve for appeal objections to the final instructions.
    Objection requires a party to state a “specific objection and the
    grounds for the objection before the jury retires to deliberate.”
    Fed. R. Crim. P. 30(d). “Failure to object in accordance with
    this rule precludes appellate review, except as permitted un-
    der Rule 52(b),” 
    id.,
     which allows review for a “plain error that
    affects substantial rights,” Fed. R. Crim. P. 52(b).
    14                                                              No. 21-1990
    The parties and district court went through several rounds
    of proposed jury instructions. The government’s first pro-
    posal included a version of Seventh Circuit Pattern Jury In-
    struction 5.06 on aiding and abetting liability: “If a defendant
    knowingly causes the acts of another, then that defendant is
    responsible for those acts as though he personally committed
    them.” While counsel debated other instructions, Gan never
    made an issue of this one. At various times, his counsel and
    the court labeled it “agreed,” “unopposed,” and “given with-
    out objection.” Gan’s express approval of the aiding and abet-
    ting instruction shows a failure to object under Rule 30(d), so
    our review is limited to plain-error review under Rule 52(b). 1
    1Some of our cases have tried to distinguish between waiver and for-
    feiture of jury instruction errors, asking for instance whether an attorney
    stating that she has “no objection” to any instructions should constitute
    waiver or still allow for plain-error review. E.g., United States v. Freed,
    
    921 F.3d 716
    , 720 (7th Cir. 2019) (acknowledging “harshness” of finding
    waiver from stating “no objection” and suggesting there are exceptions to
    the waiver rule); United States v. Groce, 
    891 F.3d 260
    , 269 (7th Cir. 2018)
    (noting difficulty of distinguishing between forfeiture and waiver in this
    context); United States v. Natale, 
    719 F.3d 719
    , 729–31 (7th Cir. 2013) (stating
    that affirmative approval of jury instruction can waive later challenge, but
    noting that a court may still consider waived issue when interests of jus-
    tice so require). Freed, Groce, and Natale did not turn on the difference,
    since all ultimately found that the challenges failed even under plain-error
    analysis. Freed, 921 F.3d at 720; Groce, 891 F.3d at 269; Natale, 719 F.3d at
    731.
    Rule 30(d) gives clear instructions for appellate challenges to jury in-
    structions. The rule does not distinguish between waiver and forfeiture.
    Whether an attorney explicitly approves a particular instruction or notes
    that she has “no objection” to any instructions, the attorney has failed to
    present a specific objection as required under Rule 30(d). Under the rule’s
    text, only plain-error review is allowed, but it is nevertheless allowed, not
    prohibited on a waiver theory. Given the lack of distinction between
    No. 21-1990                                                               15
    It is plain error to give a jury instruction that misstates the
    mens rea requirement for a crime that is dictated by statute.
    We have already said that the mens rea language challenged
    by Gan in this pattern instruction “is obviously problematic.”
    Freed, 921 F.3d at 721. As in Freed, however, we are not con-
    vinced that the language affected the defendant’s substantial
    rights, which “usually means that the error ‘must have af-
    fected the outcome’” of proceedings. United States v. Cotton,
    
    535 U.S. 625
    , 632 (2002), quoting Olano, 
    507 U.S. at 734
    . We
    find no reversible error in the instruction.
    First, ample evidence supported Gan’s conviction under
    alternate theories relying on unchallenged instructions and
    even under a corrected version of the challenged instruction
    itself. The jurors would have relied on the challenged instruc-
    tion only if they thought both that Gan acted not as a principal
    but as an aider and abettor, and that the couriers he directed
    were unaware that they were participating in criminal activ-
    ity. As Judge Durkin correctly noted in rejecting Gan’s post-
    trial challenge to the instruction, there was ample evidence to
    convict Gan for acting as a principal, in which case the jury
    would have relied on an unchallenged instruction.
    waiver and forfeiture in Rule 30(d), it is not clear that the distinction
    should affect our level of review of jury instructions. In virtually every
    trial, all attorneys will be required to state on the record whether they ap-
    prove or object to jury instructions before they are given, making forfei-
    ture through silence impossible. See Fed. R. Crim. P. 30. At least in the
    absence of invited error, appellate counsel and we might do better to focus
    on Rules 30(d) and 52(b) rather than wading into whether waiver is
    shown. Cf. United States v. Muskovsky, 
    863 F.2d 1319
    , 1329 (7th Cir. 1988)
    (even plain-error review not available for invited errors in jury instruc-
    tions).
    16                                                  No. 21-1990
    Further, there was sufficient evidence to convict Gan as an
    aider and abettor directing couriers who were aware of the
    illegality, in which case the jury would have relied on yet an-
    other unchallenged instruction. Finally, even if the jury had
    relied on the instruction at issue, the district court noted that
    framing the question in terms of “willful” rather than “know-
    ing” would not have made a difference. The difference can be
    subtle to the point of being invisible. In any event, the evi-
    dence lent strong support for finding that Gan acted willfully
    in the sense that he knew what he was doing was illegal. Gan
    has not offered a persuasive explanation under which the jury
    might have believed that he acted knowingly yet not willfully
    in facilitating the money laundering through the complex
    procedures he directed. The use of the jury instruction that
    Gan approved did not result in a denial of substantial rights,
    nor did it undermine the integrity or reputation of the pro-
    ceedings. We will not reverse on plain-error review.
    IV. Prosecutorial Misconduct
    Gan argues next that his Fifth Amendment right to a fair
    trial was violated by prosecutorial misconduct in closing ar-
    gument. He contends the government made improper re-
    marks targeting the defense attorney and vouching for a wit-
    ness. No objections were raised at trial. We find no error, let
    alone any plain error, in the challenged remarks.
    A. Background
    To determine whether alleged prosecutorial misconduct
    occurred and calls for reversal, we first read the challenged
    remarks in isolation and decide whether they were improper.
    United States v. Carswell, 
    996 F.3d 785
    , 796 (7th Cir. 2021). If
    not, the challenge fails. If we do find a remark improper, we
    No. 21-1990                                                      17
    then consider it in the context of the entire trial record to eval-
    uate whether the remark deprived a defendant of the right to
    a fair trial. We take into account: “(1) whether the prosecutor
    misstated the evidence, (2) whether the remarks implicate
    specific rights of the accused, (3) whether the defense invited
    the response, (4) the trial court’s instructions, (5) the weight
    of the evidence against the defendant, and (6) the defendant’s
    opportunity to rebut.” Howard v. Gramley, 
    225 F.3d 784
    , 793
    (7th Cir. 2000); see also Darden v. Wainwright, 
    477 U.S. 168
    ,
    181–82 (1986) (establishing factors). The weight of the evi-
    dence is the most important factor. Carswell, 996 F.3d at 796.
    Defense counsel did not object to any of the challenged
    statements during trial, so we review them only for plain er-
    ror. No plain error occurred unless Gan “probably would
    have been acquitted” if the prosecutor had not made the chal-
    lenged remarks. United States v. Norwood, 
    982 F.3d 1032
    , 1053
    (7th Cir. 2020) (citation omitted); see also United States v. Keler-
    chian, 
    937 F.3d 895
    , 917 (7th Cir. 2019) (plain error requires de-
    fendant to show remarks were obviously improper and “that
    the outcome of the trial probably would have been different
    absent the prosecution’s remarks”), quoting United States v.
    Hills, 
    618 F.3d 619
    , 640 (7th Cir. 2010). Reversals are exceed-
    ingly rare for closing arguments that did not draw even an
    objection at trial: “In essence, the question is whether the ar-
    gument was so egregious that the trial judge was required to
    intervene without a defense objection.” Kelerchian, 937 F.3d at
    917.
    18                                                 No. 21-1990
    B. Analysis of Challenged Statements
    1. Targeting Defense Attorney Personally
    We begin with the statements allegedly targeting the de-
    fense attorney personally. Attorneys should not attack oppos-
    ing counsel personally, but they may criticize opposing coun-
    sel’s tactics and the strength of the evidence. See United
    States v. Bloom, 
    846 F.3d 243
    , 254 (7th Cir. 2017) (the govern-
    ment may point to the lameness of the defense and may “crit-
    icize[ ] defense counsel’s tactics, [but] not defense counsel
    personally”).
    Our cases illustrate this line between criticism of tactics
    and personal attacks. We found no reversible error where a
    prosecutor called defense counsel’s arguments “‘made up,’
    ‘absolutely false,’ ‘ridiculous,’ or ‘ludicrous.’” We said these
    comments “were largely focused on the lameness of the de-
    fense rather than defense counsel personally.” United States v.
    Washington, 
    417 F.3d 780
    , 786–87 (7th Cir. 2005). We also found
    no error where a prosecutor said that defense counsel was
    “putting up a ‘smoke screen’” and that cross-examination was
    so repetitive as to “border[ ] on a waste of the jury’s time.”
    Bloom, 846 F.3d at 254.
    An impermissible personal attack did occur when a pros-
    ecutor suggested even jokingly that defense counsel had com-
    mitted a crime, saying that “defense counsel had apparently
    broken the antenna off of someone’s car” and used it as a
    pointing device during argument. United States v. Mealy,
    
    851 F.2d 890
    , 903 (7th Cir. 1988). In a civil case we found that
    comments were personal attacks where defense counsel re-
    ferred “to plaintiffs’ lawyer disparagingly as ‘an amateur’ on
    numerous occasions … [and] interfered with [her] legitimate
    No. 21-1990                                                   19
    attempts to raise objections, barking at her to ‘sit down’ and
    ‘stop interfering,’ and claiming in the presence of the jury that
    she ‘didn’t know the rules.’ He literally grabbed papers out of
    her hands….” Tyus v. Urban Search Mgmt., 
    102 F.3d 256
    , 261
    (7th Cir. 1996) (ordering new trial on multiple grounds).
    Here, Gan challenges several of the prosecutor’s state-
    ments during closing remarks, including that the defense the-
    ory was “ridiculous,” a “trip to fantasy land,” and “garbage.”
    Many of these challenged statements appear in the first mo-
    ments of the argument:
    Well, I hope you enjoyed your trip to fanta-
    syland where the defendant is a poor, misun-
    derstood fish salesman who accidentally laun-
    dered tens of millions of dollars for Mexican
    drug cartels. That is absolutely ridiculous. It is
    contrary to all of the evidence in this case, and it
    is designed to distract you. It is garbage. You
    should treat it like garbage, and you should
    throw it out. Let’s get back to reality. Three
    things that matter back here in the real world:
    evidence, law, and your common sense.
    This language closely mirrors that challenged unsuccessfully
    in Washington. 
    417 F.3d at
    786–87 (rejecting challenge to call-
    ing opposing counsel’s arguments “ridiculous” and “made
    up”). The comments here all urged the jurors to focus on the
    evidence. The prosecutor properly centered his rhetoric on
    the weakness of the defense theory in the face of specific evi-
    dence.
    Next, Gan challenges as a personal attack the prosecutor’s
    statement that “try as they might to embarrass [Lim] about
    20                                                 No. 21-1990
    her personal life and the illnesses within her family, she stood
    firm and she told you the truth … Defense counsel likes to talk
    about illusions and magic, but none of that was involved.”
    Defense counsel used the term “illusion” eight times in open-
    ing remarks, saying, for example, that an “illusion of events is
    being utilized by the government….” The prosecutor criti-
    cized here a specific phrasing of the defense’s theory. It was
    not a personal attack on the defense attorney. There was no
    misconduct.
    Last, Gan complains that the prosecutor twice said during
    closing that “lawyers mumble; evidence speaks.” In isolation,
    perhaps this odd phrase could be interpreted as improperly
    attacking an attorney’s manner, stature, or even speech im-
    pediment. In context here, however, the prosecutor tied the
    phrase to specific facts to demonstrate why the jurors should
    disregard certain arguments from defense counsel in light of
    evidence.
    The prosecutor first used this phrase to counter what
    “[d]efense counsel just got up here and told you, ‘My client
    doesn’t do transactions in the United States.’” The prosecutor
    asked the jury to compare this argument to specific messages
    showing that Gan participated in transactions in Chicago.
    The second use came while discussing the defense’s the-
    ory of entrapment. The prosecutor asked the jury to
    “[e]xamine the power dynamic. Who’s calling the shots? …
    Lawyers mumble; evidence speaks. Read the evidence.” The
    attorney then read the portion of a transcript with Gan telling
    Lim that there would be “product” in Detroit. In interpreting
    the transcript, the prosecutor asked the jury to use “common
    sense. He’s not talking about fish flopping around on the
    streets of Detroit. He’s talking about drug money, and he
    No. 21-1990                                                       21
    wants to expand there, because he wasn’t coerced; he wasn’t
    tricked. He wanted to do it. He is expanding into Detroit be-
    cause he’s predisposed to commit these crimes.” We find no
    misconduct in the use of the odd phrase to focus the jury on
    specific pieces of evidence that conflicted with the defense
    theory.
    2. Vouching
    Moving to the second category of challenged statements,
    Gan argues that the prosecution improperly vouched for
    Lim’s credibility. Vouching occurs when an attorney ex-
    presses her personal belief in the truthfulness of a witness or
    implies that facts not in evidence support a witness’s credibil-
    ity. See, e.g., United States v. Brasher, 
    962 F.3d 254
    , 269 (7th Cir.
    2020). Comments about a witness’s credibility are proper,
    however, when they “‘reflect[] reasonable inferences from the
    evidence’ rather than a personal opinion of the prosecutor.”
    United States v. Chavez, 
    12 F.4th 716
    , 728 (7th Cir. 2021), quot-
    ing United States v. Wolfe, 
    701 F.3d 1206
    , 1212 (7th Cir. 2012).
    When a prosecutor comments on a government witness, it is
    “well established that the government can point out that its
    witnesses, under their plea agreements, are required to testify
    truthfully.” United States v. Briseno, 
    843 F.3d 264
    , 272 (7th Cir.
    2016) (internal quotation omitted).
    The challenged statements about Lim include that her tes-
    timony “was authentic because she has no motivation to lie to
    you,” and that she was “here to tell the truth, keep the deal,
    and get off. She’s self-interested. Why would she risk losing
    that 50 percent recommendation to spend up to 20 years in
    prison just to frame up an innocent man?” These comments
    properly explained facts in evidence about Lim’s cooperation
    deal. The prosecutor specifically noted that “you heard her
    22                                                         No. 21-1990
    benefit gets no better if [Gan is] convicted and no worse if he’s
    acquitted. So why in the world would she risk getting up there
    and telling you a fake story?” Gan also challenges the follow-
    ing question posed by the prosecutor to the jury: “If she was
    going to lie for the government, wouldn’t she have tossed in
    some extra details to help us out?” In the same breath, the
    prosecutor noted that Lim never claimed Gan directly ex-
    plained to her that the money involved was drug proceeds, a
    fact that would have helped the government. Finally, Gan
    challenges the prosecutor’s statement that Lim said Gan “was
    her friend. And you can see she was uncomfortable up there
    because she felt bad and guilty about having to come out
    about the truth of what they did.”
    These challenged comments about Lim’s credibility were
    explicitly tied to the facts in evidence about her testimony, her
    own deal, and inferences about her motives to be truthful.
    None of the prosecutor’s statements about Lim implied that
    he knew facts outside of the evidence affecting her credibility
    or expressed a bare assertion that he believed Lim was telling
    the truth. We find no misconduct. 2
    V. Reliance on Acquitted Conduct at Sentencing
    Last, Gan challenges the district court’s consideration of
    his acquitted conspiracy charge at sentencing. The district
    judge found that the government proved the conspiracy-re-
    lated conduct by at least a preponderance of the evidence. The
    judge calculated Gan’s guideline range as 324 to 405 months
    based on both the convicted and acquitted counts. Gan’s
    guideline range based solely on the offenses of conviction
    2 Gan also argues that the cumulative effect of errors requires a new
    trial. Because we find no errors, this argument fails.
    No. 21-1990                                                    23
    would have been 135 to 168 months. The district court im-
    posed a final sentence of 168 months.
    Gan does not challenge the district judge’s finding that the
    prosecution proved the conduct underlying the acquitted
    charge “not just by a preponderance of the evidence but be-
    yond a reasonable doubt.” Gan challenges more generally the
    practice of considering acquitted conduct at sentencing. The
    Supreme Court has held squarely that “a jury’s verdict of ac-
    quittal does not prevent the sentencing court from consider-
    ing conduct underlying the acquitted charge, so long as that
    conduct has been proved by a preponderance of the evi-
    dence.” United States v. Watts, 
    519 U.S. 148
    , 157 (1997); see also
    United States v. Booker, 
    543 U.S. 220
    , 232–33 (2005) (mandatory
    nature of Sentencing Guidelines made consideration of ac-
    quitted conduct at sentencing inconsistent with Sixth Amend-
    ment, but problem was remedied by rendering Guidelines ad-
    visory). Nonetheless, Gan has preserved the issue for further
    review by objecting to the practice at the sentencing hearing
    and in briefing before this court.
    The judgment of the district court is AFFIRMED.