United States v. Nabila Mahbub , 818 F.3d 213 ( 2016 )


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  •                         RECOMMENDED FOR FULL-TEXT PUBLICATION
    Pursuant to Sixth Circuit I.O.P. 32.1(b)
    File Name: 16a0073p.06
    UNITED STATES COURT OF APPEALS
    FOR THE SIXTH CIRCUIT
    _________________
    UNITED STATES OF AMERICA,                            ┐
    Plaintiff-Appellee,   │
    │
    │
    v.                                             │
    >      No. 14-1499
    │
    NABILA MAHBUB,                                       │
    Defendant-Appellant.     │
    ┘
    Appeal from the United States District Court
    for the Eastern District of Michigan at Detroit.
    No. 2:10-cr-20014—Denise Page Hood, Chief District Judge.
    Argued: June 9, 2015
    Decided and Filed: March 29, 2016
    Before: KEITH, CLAY, and STRANCH, Circuit Judges.
    _________________
    COUNSEL
    ARGUED: Elizabeth L. Jacobs, Detroit, Michigan, for Appellant. Stephanie M. Gorgon,
    OFFICE OF THE UNITED STATES ATTORNEY’S OFFICE, Detroit, Michigan, for Appellee.
    ON BRIEF: Elizabeth L. Jacobs, Detroit, Michigan, for Appellant. Stephanie M. Gorgon,
    OFFICE OF THE UNITED STATES ATTORNEY’S OFFICE, Detroit, Michigan, for Appellee.
    _________________
    OPINION
    _________________
    DAMON J. KEITH, Circuit Judge. A jury convicted Nabila Mahbub of conspiring to
    commit healthcare fraud under 18 U.S.C. § 1349. The district court sentenced Mahbub to a
    below-guidelines range sentence of forty-six months in prison. Mahbub timely appealed. On
    appeal, Mahbub contends the following: (1) the district court erred in denying Mahbub’s
    1
    No. 14-1499                             United States v. Mahbub                                      Page 2
    challenge under Batson v. Kentucky, 
    476 U.S. 79
    (1986); (2) the district court erred in using the
    Sixth Circuit pattern jury instruction regarding the criminal conspiracy claim; (3) Mahbub’s trial
    counsel rendered ineffective assistance of counsel for failing to object to the jury instruction; and
    (4) Mahbub’s sentence was substantively unreasonable.
    Because the district court erred in denying Mahbub’s Batson challenge, we REMAND
    the case to the district court for further proceedings, but AFFIRM the district court in all other
    respects.
    I.      FACTUAL BACKGROUND
    At trial, the government’s theory of the case, in relevant part, was as follows: All
    American Home Care, Inc. (“All American”) was a health agency that purportedly provided a
    range of therapy-related services at the homes of patients. R. 716 at 7314. All American was a
    Medicare1 provider that submitted claims directly to Medicare. 
    Id. Mahbub was
    an office
    manager at All American, which meant that she would assist in managing the day-to-day
    operations at All American. 
    Id. at 7315,
    7317. All American submitted claims to Medicare for
    the cost of various therapy services that were medically unnecessary and not provided. 
    Id. at 7317.
       According to the government, Mahbub specifically created, fabricated and falsified
    medical and billing documents. 
    Id. at 7318.
    This was done to facilitate the commencement of
    home health services purportedly provided by therapy assistants working for All American. 
    Id. at 7318–19.
    The parties stipulated that All American was paid $5,809,435.74 by Medicare for
    home-health services between September 2008 and November 2009. R. 717 at 7606.
    In 2012, Mahbub, along with other individuals, was indicted for her participation in this
    fraudulent scheme.       R. 451.      In 2013, a jury convicted Mahbub of conspiracy to commit
    healthcare fraud under 18 U.S.C. § 1349, R. 568, and Mahbub was sentenced to forty-six months
    in prison, R. 682.
    1
    Medicare is “the federal health insurance program for people who are 65 or older, certain younger people
    with disabilities, and people with End-State Renal Disease (permanent kidney failure requiring dialysis or a
    transplant . . . .” Medicare.gov, https://www.medicare.gov/glossary/m.html (last visited February 9, 2016).
    No. 14-1499                              United States v. Mahbub                                     Page 3
    The following facts are relevant to this appeal.
    a.       Voir Dire.
    During voir dire,2 the government asked Mr. Syed, a prospective juror, questions related
    to the responses he had provided in a questionnaire.3 R. 716 at 7339. For example, the
    government asked Mr. Syed whether he had seen Southeast Asians4 “charged [with committing
    crimes] in [certain] news stories.” 
    Id. at 7340.5
    The government also asked him whether he felt
    like the “South[]Asian” community was being “unfairly targeted.” 
    Id. The exchange
    continued
    as follows:
    THE GOVERNMENT: Do you feel like the Government has unfairly targeted the
    [S]outh[] Asian community in any way?
    MR. SYED: No. I feel like they did it, that’s why.
    THE GOVERNMENT: So—
    MR. SYED: If they commit the fraud, so they were charged with it.
    THE GOVERNMENT: So you don’t feel like it is unfair to focus on the—
    MR. SYED: I wouldn’t say it is unfair. It’s fair.
    
    Id. at 7340–41.
    Defense counsel then proceeded to ask Mr. Syed questions. Defense counsel asked Mr.
    Syed to explain what the hijab was. 
    Id. at 7341.
    The hijab, Mr. Syed explained, is a headscarf
    that Muslim women don. 
    Id. Defense counsel
    asked him whether the hijab made him feel a
    certain way. 
    Id. at 7342.
    Mr. Syed replied:
    2
    Voir dire is a “preliminary examination of a prospective juror by a judge or lawyer to decide whether the
    prospect is qualified and suitable to serve on a jury.” Black’s Law Dictionary (10th ed. 2014).
    3
    The questionnaire had been prepared by defense counsel and the government and had been circulated to
    the prospective jurors for completion. See R. 716 at 7333.
    4
    Although the government refers to the “Southeast Asian” community, it probably meant to use the
    term “South Asian.” “South Asian” is a term used to describe inhabitants of countries that make up South
    Asia, including Pakistan and Bangladesh. See “South Asian, adj. and n.,” OED Online (January 2016),
    http://www.oed.com/view/Entry/242301?redirectedFrom=south+asian#eid (last visited Jan. 26, 2016).
    5
    An example of this news story, the government later explained, is a Detroit Free Press article dated
    November 28, 2011. R. 717 at 7520. In the response brief, the government provided the following citation for the
    article: “Judges saying ‘no bond’ to white-collar suspects,” Detroit Free Press, Nov. 28, 2011, available at
    2011 WLNR 24603864. Appellee Br. 23. The article described, in relevant part, the flight risk posed by a Pakistani
    businessman charged with “bilking” $31 million from Medicare.
    No. 14-1499                       United States v. Mahbub                              Page 4
    Yes, in a good way, or I respect to her. Like, I’m more—just because I’m from
    that culture and I myself as a Muslim and my sister also wears the hijab and she is
    just more respectful.
    
    Id. Later, defense
    counsel presented a factual scenario to the prospective jurors. 
    Id. at 7345–
    46. In that scenario, defense counsel expressed his concern that his daughter might “end up
    working at a clinic, someplace where they don’t do things right and she might get caught up in
    something that ends her up in a place like . . . where Ms. Mahbub is sitting.” 
    Id. While discussing
    the scenario, defense counsel noticed Mr. Syed shake his head in agreement. 
    Id. at 7346.
    Defense counsel asked Mr. Syed whether he had the same concern for his children or his
    family. 
    Id. Mr. Syed
    replied in the affirmative. 
    Id. Defense counsel
    asked him to elaborate on
    his response, and Mr. Syed replied as follows:
    A: I—as you said, do you want your daughter to work at a place where these
    kinds of things happen, and oh, there might be a reason that they—where I been
    there and were you aware of depending on the person and the position.
    
    Id. When defense
    counsel repeated the hypothetical question to the other prospective jurors,
    he noticed that another prospective juror shook her head. 
    Id. That juror,
    Ms. Brown, expressed
    the following:
    A: Yes. I wouldn’t want them to be in a position where they feel they can’t, you
    know, get out of it if they find out there is something going on. That it should be,
    you know, but because of authority over them or because they need the job or,
    you know, they feel they have to stay.
    ....
    A: Sometimes you feel like you don’t have a voice. You need the job. You don’t
    want to say anything because you don’t want to lose the job or anything like that,
    so somebody—you know, you might go along with it or, you know, look past it
    or, you know, not speak up or anything.
    
    Id. at 7347–48.
    No. 14-1499                             United States v. Mahbub                                      Page 5
    Later, the government asked Ms. Brown a follow-up question:
    Q: Finally, I want to turn to Ms. Brown in seat 1. . . . I think you said that it
    became—that sometimes younger people get caught in sticky situations and don’t
    know how to get out, am I characterizing it?
    A: Not just younger people.
    Q: But folks generally.
    A: Yes.
    Q: And does that make you want to give a pass to people in certain situations?
    Well, you might say, this is—well, they got caught up, or let’s say it is the first
    time someone has done something wrong, are you willing to give them a pass,
    maybe they didn’t know how to get out of it or are you going to go by weighing
    the evidence?
    A: I have to weigh the evidence.
    
    Id. at 7378–79.
    The prosecutor did not ask Mr. Syed the same follow-up question.
    i.       Mahbub raises a Batson challenge.
    The government peremptorily challenged two jurors, one of whom was Mr. Syed. A
    peremptory challenge is “[o]ne of a party’s limited number of challenges that do not need to be
    supported by a reason unless the opposing party makes a prima facie showing that the challenge
    was used to discriminate on the basis of race, ethnicity, or sex.” Black’s Law Dictionary (10th
    ed. 2014).6 Mahbub made a Batson challenge as to Mr. Syed, explaining “I believe there are
    only two that I can identify as potential Muslims” in the entire jury pool, “maybe only one, and
    [Mr. Syed] is one obviously.” R. 716 at 7399. Specifically, “[t]o excuse the only Muslim on a
    panel, and only one of two, leaves . . . Mahbub facing a trial without having any juror of her
    peers here.” 
    Id. According to
    defense counsel, “excusing the only Muslim on the panel,
    possibly the only one in this array, is a matter to make sure that a Muslim doesn’t get on the jury,
    which is improper under Batson.” 
    Id. at 7400.
    In response, the government indicated that there is “factually no basis that the
    [g]overnment is trying to eliminate all Muslim[s] or South Asians from the jury.” 
    Id. at 7401.
    6
    By contrast, a challenge for cause is one supported by “specified reason, such as bias or prejudice, that
    would disqualify that potential juror.” 
    Id. No. 14-1499
                            United States v. Mahbub                              Page 6
    The government also interpreted Mahbub’s challenge as one challenging the makeup of the jury
    pool, and indicated that the “jury pool is drawn from people registered in the state[,] and it is a
    randomly selected pool of people.” 
    Id. at 7400.
    Thus, according to the government, “there is
    [no] basis to conclude that somehow the pool was rigged.” 
    Id. After hearing
    the government’s explanation, the district court clarified that it expected the
    government to proffer a “non-discriminatory” explanation for excusing Mr. Syed. 
    Id. at 7401.
    The government responded as follows:
    [T]he reason was that I felt uncomfortable with his answer to whether or not he
    would be able to—there is some discomfort if someone was younger whether or
    not he would have difficulty seeing them, being able to fairly evaluate them. And
    also, he indicated that, and I think along the lines of the question I asked Ms.
    Brown as well as the fact that . . . sometimes people get in situations they can’t
    get themselves out of . . . and . . . he viewed sometimes defendants in those
    situations through the person and family members[,] and he expressed some
    discomfort with respect to the notion of judging it. That was the basis.
    
    Id. at 7401–02.
    Defense counsel responded that the government’s reason was “disingenuous” because
    Mr. Syed indicated in his questionnaire that “if a younger person defrauded Medicare no matter
    what age that the person is, they should be punished.” 
    Id. at 7402.
    Defense counsel then
    conceded that a “recent Sixth Circuit case that upheld the jury wheel in the Eastern District [of
    Michigan]” foreclosed him from challenging the jury pool. 
    Id. at 7403.
    Even so, defense
    counsel further pressed that such a random draw “cannot accurately reflect the ethnic makeup of
    the population . . . .” 
    Id. Before ruling,
    the district court summarized the government’s reasons for excusing Mr.
    Syed was his apparent “discomfort with the answer to the question about a younger person and a
    person not being able to get out of the situation they’re in.” 
    Id. at 7404.
    The government
    confirmed that the district court’s articulation of the reasons was correct. 
    Id. The court
    then
    took a ten-minute recess. 
    Id. No. 14-1499
                            United States v. Mahbub                             Page 7
    ii.     District court ruling on Batson challenge.
    After recess, the district court first asked defense counsel whether the government asked
    any questions of Mr. Syed related to his religious or ethnic background. 
    Id. Once defense
    counsel indicated that he did not think the government posed any such question, the court
    announced that it was ready to rule on the Batson challenge. 
    Id. at 7405.
    The district court
    stated that the elements of the prima facie Batson case were:
    One, their membership in a recognized and cognizable race or religious group.
    Two, that the members of the person’s race or religion have been removed from
    the venire via peremptory challenged by the other party.
    And three, that the underlying facts and relevant circumstances indicate that the
    other party employed a method . . . to exclude veniremen from the petit jury on
    account of their race, because in Batson it was a challenge to race.
    
    Id. at 7405–06.
    The district court listed three ways of proving an inference of discrimination. 
    Id. First, there
    might be a “pattern of discrimination against [minority] jurors in a specific venire;”
    second, “an inference may be found in questions and attempts made during voir dire
    proceedings;” third, the challenger might show that the party making the peremptory strike made
    statements or asked questions or otherwise made attempts that support an inference of
    discrimination during the “exercise of the peremptory challenge.” 
    Id. at 7406–07.
    The district court indicated that Mahbub had not shown that any of these methods applied
    here. 
    Id. at 7406–07.
    It ruled on the first two elements. It indicated that it did not think that
    Mahbub had met her burden that she was a “member of racial or religious group;” further, “there
    hasn’t been any showing that other members [of a racial or religious group] have been removed
    . . . .” 
    Id. at 7407.
    The district court also noted that it did not think that the government “asked
    any questions relative to Mr. Syed’s ethnic background or his race or religious background.” Id.;
    see 
    id. at 7406
    (“I actually think all of the questions posed about anything related to religion or
    ethnic background or their coming from that region of South Asian descent are all questions that
    have been raised by the Defense . . . .”).
    The district court then noted that “if . . . a prima facie case had been made, the burden
    would shift back to the opposing party to provide a neutral explanation for challenging . . . the
    No. 14-1499                               United States v. Mahbub                                       Page 8
    jurors.” 
    Id. at 7408.
    The court also found that the government’s reasons were “neutral.” 
    Id. Further, the
    district court explained:
    [The government] said [Mr. Syed] answered the younger person question with
    some hesitation, that he could see that there was some hesitation, that he could see
    that there was some discomfort in the person being in a situation where they did
    not expect to be in, and while I don’t think that his answers were—well, they
    certainly weren’t strong enough to raise to the level of a challenge for cause, and
    while I don’t specifically remember them being specifically any stronger, I
    believe, than some of the other jurors that are sitting here, they certainly arise
    from the racial and religious, not racial, as well. And while I don’t think they’re
    such great reasons for exercising your peremptory challenges, I don’t think that
    we probably even necessarily get that far because I don’t think you have made out
    the prima facie case.
    
    Id. at 7408–09.
    After the ruling, the parties engaged in an extensive colloquy with the court about the use
    of questionnaires. 
    Id. at 7409–15.
    Defense counsel explained that the government did not need
    to ask any questions about race or ethnicity because such information could be gleaned from the
    questionnaires themselves. 
    Id. at 7410.
    The district court, after reviewing Mr. Syed’s responses
    to the questionnaire, responded that it could not “see how [Mahbub] can hold the [g]overnment
    accountable for that if [the parties] agreed to the questions.” 7 
    Id. at 7413.
    The court suggested
    that the government may have had an additional reason for exercising its peremptory strike: “It is
    of interest to me that the [g]overnment in their response didn’t say that we know this person is
    seeing a physical therapist, they already have a strong feeling about fraud, it might taint them, it
    is not followed up at all by the [g]overnment.” 
    Id. at 7414.
    In any case, the district court
    concluded, Mahbub had not made a prima facie case. 
    Id. at 7415.
    b.       Trial proceedings.
    The next day, outside the presence of the jury, the government sought to clarify the
    record regarding the Batson challenge. R. 717 at 7519. The government wanted to note for the
    record that it asked Mr. Syed a question related to his nationality. 
    Id. The question
    had asked
    7
    In his questionnaire, Mr. Syed indicated, among other things, that: he is Pakistani; he has friends who are
    physical therapists; he thinks people who defraud Medicare should be punished; and he has been seeing a physical
    therapist because of a back injury. See R. 746.
    No. 14-1499                              United States v. Mahbub                                      Page 9
    was whether Mr. Syed felt that the government was “improperly targeting any communities.” 
    Id. The government
    referred to a November 28, 2011 Detroit Free Press article about whether the
    government was “unfairly targeting foreigners.” 
    Id. at 7520.
    According to the government,
    because Mr. Syed indicated that he followed stories in the news about South Asians charged with
    committing crimes, see R.716 at 7340, it was an appropriate question to ask, R. 717 at 7519–20.
    Defense counsel indicated that the government’s response “fortified the need to renew
    [Mahbub’s] Batson challenge.” 
    Id. at 7520.
    Like the government, defense counsel also took the
    opportunity to clarify the record. 
    Id. at 7521–22.
    He indicated that the other juror who he
    thought was Muslim was not; she was Indian. 
    Id. Defense counsel
    had peremptorily stricken her
    from the jury pool. See R. 716 at 7418, 7466. The court responded that the two categories—
    Indian and Muslim—were not mutually exclusive.8 R. 717 at 7522.
    Trial took place over five days.9 Appellee Br. 13. On April 17, 2013, the jury convicted
    Mahbub of conspiring to commit healthcare fraud under 18 U.S.C. § 1349. R. 568. On April 16,
    2014, a judgment was entered against Mahbub. R. 682. She timely appealed. R. 683.
    II.      DISCUSSION
    A.      Batson challenge
    Mahbub contends that she presented a prima facie case of purposeful discrimination
    during her Batson challenge. Appellant Br. 28. In support of this argument, Mahbub argues that
    Mr. Syed and Ms. Brown were similarly situated—here, that means both initially responded
    similarly to the scenario about younger people finding themselves in difficult situations. 
    Id. 8 The
    court tried to clarify whether Mahbub’s Batson challenge was based on “religion and area of
    nationality or area of the world.” R. 717 at 7523. Although defense counsel referred to Mr. Syed’s nationality, he
    still implied that the challenge was based on religion: “I believe the juror who was excused said he was from
    Pakistan. Pakistan is known to be a Muslim country. Based on the way he answered the questions, he is obviously
    of the Muslim religion, as is Ms. Mahbub.” 
    Id. 9 On
    the last day of trial testimony, the government again raised the Batson challenge before the court, see
    R. 708 at 7024–26, to make sure the court had ruled on what the government viewed as a renewed Batson challenge.
    Although the district court indicated that it would “close the loop but not the section”—and it is not clear what
    “section” refers to—it later stated emphatically that it “closed the loop.” 
    Id. No. 14-1499
                              United States v. Mahbub                                 Page 10
    However, the government excused Mr. Syed for providing the same response as Ms. Brown
    did.10 
    Id. 1. Standard
    of review.
    “We review a district court’s determination of a Batson challenge with ‘great deference,’
    under a clearly erroneous standard.” United States v. Cecil, 
    615 F.3d 678
    , 685 (6th Cir. 2010),
    cert. denied, 
    562 U.S. 1240
    (2011); see also Miller-El v. Cockrell, 
    537 U.S. 322
    , 339 (2003).
    Nevertheless, “deference does not imply abandonment or abdication of judicial review.”
    
    Cockrell, 537 U.S. at 340
    . When ruling on “alleged mistake[s] of law, it makes no difference
    whether we review this Batson challenge for clear error . . . or review it de novo. In either event,
    a mistake of law generally satisfies clear-error, de-novo or for that matter abuse-of-discretion
    review.” United States v. Kimbrel, 
    532 F.3d 461
    , 465–66 (6th Cir. 2008); see also 
    Cecil, 615 F.3d at 685
    (“[W]hen ruling on alleged mistakes of law, the applicable standard of review is
    essentially de novo.”).
    None of the Batson-arguments Mahbub raises on appeal were presented to the district
    court, and all are thus unpreserved. See, e.g., United States v. Crawford, 60 F. App’x 520, 535
    (6th Cir. 2003) (stating that an issue not raised below is not preserved for appeal). In the context
    of these unpreserved arguments, we apply the plain-error standard of review. Fed. R. Crim. P.
    52(b) (“A plain error that affects substantial rights may be considered even though it was not
    brought to the court’s attention.”). Ordinarily, for an error to be “plain”:
    (1) there must be a legal error . . . ; (2) the error must be clear; (3) the error must
    have affected the appellant’s substantial rights in that it affected the outcome of
    the district court proceedings; and (4) the error must have seriously affected the
    fairness, integrity, or public reputation of the judicial proceedings.
    See United States v. Lawrence, 
    735 F.3d 385
    , 401 (6th Cir. 2013). Additionally, we have held
    that a district court’s improper denial of a Batson challenge constitutes a “structural error.” See,
    e.g., United States v. McAllister, 
    693 F.3d 572
    , 582 n.5 (6th Cir. 2012). “Structural errors” are
    errors that affect the “entire conduct of the trial from beginning to end.” Arizona v. Fulminante,
    10
    Although the record does not indicate Ms. Brown’s race, her race is presumably different from Mr.
    Syed’s based on the context of the colloquies in the district court.
    No. 14-1499                               United States v. Mahbub                                        Page 11
    
    499 U.S. 279
    , 309 (1991). Structural errors are a “very limited class of errors that trigger
    automatic reversal because they undermine the fairness of a criminal proceeding as whole.”
    United States v. Davila, 
    133 S. Ct. 2139
    , 2149 (2013) (internal quotation marks omitted)).
    Accordingly, a defendant making a Batson challenge need not make a separate showing that the
    third and fourth elements of the plain error review have been met.11 
    McAllister, 693 F.3d at 582
    n.5. All the defendant must show is that the first two elements have been met—i.e., that the
    district court made an (1) error that was (2) clear. Cf. United States v. Olano, 
    507 U.S. 725
    , 734
    (1993) (“At a minimum, court of appeals cannot correct an error pursuant to Rule 52(b) unless
    the error is clear under current law.”); United States v. Brown, 
    352 F.3d 654
    , 664 (2d Cir. 2003)
    (“The most obvious example of plain error is a trial court decision in direct contravention of
    governing case law.”).
    2.       Burden-shifting framework under Batson
    There are three steps to a Batson inquiry:
    Step one. To prevail on a Batson claim, the defendant must first “make a prima facie
    showing of discriminatory use of peremptory challenges.” United States v. Harris, 
    192 F.3d 580
    , 586 (6th Cir. 1999). Under Batson, a prima facie case is established by showing each of the
    following elements:
    [1] that [the defendant] is a member of a cognizable racial group . . .
    [2] that the prosecutor has exercised peremptory challenges to remove from the
    [jury pool] members of the defendant’s race . . . [and]
    [3] that these facts and any other relevant circumstances raise an inference that the
    prosecutor used that practice to exclude the [potential jurors] from the petit jury
    on the account of their race.
    
    Batson, 476 U.S. at 96
    . As explained in detail in the next section, the Supreme Court in Powers
    v. Ohio, 
    499 U.S. 400
    (1991), “modified the Batson prima facie case to allow a defendant to raise
    11
    We also note that while “[o]rdinarily Rule 52(b) is invoked by counsel[,] who, in preparing an appeal,
    discover what they consider to be error to which they took no objection below . . . the rule is not so limited.” United
    States v. Finch, 
    998 F.2d 349
    , 354–55 (6th Cir. 1993) (quoting 3 Charles A. Wright, Federal Practice and Procedure,
    Criminal 2d § 856). An “appellate court may take notice of the error on its own motion though it was never put
    forward by counsel.” 
    Id. at 355.
    No. 14-1499                                United States v. Mahbub                                          Page 12
    a Batson violation even if he is not of the same race as the excluded juror.” United States v.
    Odeneal, 
    517 F.3d 406
    , 419 (6th Cir. 2008).
    In determining whether a prima facie case exists, the trial court “should consider all
    relevant circumstances.” 
    Batson, 476 U.S. at 96
    . “For example, a ‘pattern’ of strikes against
    black jurors included in the particular venire might give rise to an inference of discrimination.”
    
    Id. at 97.
    “Similarly, the prosecutor’s questions and statements during voir dire examination and
    in exercising his challenges may support or refute an inference of discriminatory purpose.” 
    Id. These examples,
    the Batson Court held, are “merely illustrative,” and the Court reasoned that
    trial judges, “experienced in supervising voir dire, will be able to decide if the circumstances
    concerning the prosecutor’s use of peremptory challenges creates a prima facie case of
    discrimination against black jurors.”12 
    Id. Step two.
          Once this showing is made, the government must offer a “race-neutral
    explanation for challenging the jurors.” 
    Harris, 192 F.3d at 586
    . This proffered reason “need
    not be particularly persuasive, or even plausible, so long as it is neutral.” Id.; see also Purkett v.
    Elem, 
    514 U.S. 765
    , 767–68 (1995).
    Step three. Once a race-neutral explanation is “tendered, the trial court must then decide
    . . . whether the [party raising the Batson challenge] has proved purposeful racial
    discrimination.” 
    Odeneal, 517 F.3d at 419
    (quoting 
    Purkett, 514 U.S. at 767
    ). At this step, the
    trial court must assess the plausibility of the prosecution’s proffered explanation “in light of all
    12
    Batson has been expanded to cover other categories of potential jurors. “Under the Equal Protection
    Clause, a defendant may not exercise a peremptory challenge to remove a potential juror solely on the basis of the
    juror’s gender, ethnic origin, or race.” United States v. Martinez-Salazar, 
    528 U.S. 304
    , 315 (2000) (collecting
    cases).
    At this point, we note that the parties and the district court used multiple terms to describe the categories of
    groups that purportedly fall within Batson’s reach—Muslims (R. 716 at 7399) and South Asians (R. 716 at 7406).
    The categorization of “South Asian” as a race or ethnicity is the subject of academic scholarship. See, e.g., Vinay
    Harpalani, Ambiguity, Ambivalence, and Awakening: a South Asian becoming “critically” aware of race in
    America, 11 Berkeley J. Afr.-Am. L. & Pol’y 71 (2009); Charu A. Chandrasekhar, Note, Flying While Brown:
    Federal Civil Rights Remedies to Post 9/11 Airline Racial Profiling of South Asians, 10 Asian Law J. 215 (2003).
    Courts have not consistently referred to “South Asian” as either a race or an ethnicity. See, e.g., Nayyar v. Mount
    Carmel Health Sys., Nos. 2:12–CV–00189, 2:10–CV–00135, 
    2013 WL 2418072
    , at *4 n.4 (S.D. Ohio June 3, 2013)
    (referring to the plaintiff’s race as South Asian); Gazvoda v. Secretary of Homeland Security, Case No. 15-cv-
    14099, 
    2015 WL 7450397
    , at *2 (E.D. Mich. Nov. 24, 2015) (referring to “South Asian ethnicity”). However,
    because Batson applies to both race and ethnicity, 
    Martinez-Salazar, 528 U.S. at 315
    , we conclude that South Asians
    are protected for Batson purposes.
    No. 14-1499                               United States v. Mahbub                                         Page 13
    evidence with a bearing on it.” Miller-El v. Dretke, 
    545 U.S. 231
    , 252 (2005); see also United
    States v. Torres-Ramos, 
    536 F.3d 542
    , 560 (6th Cir. 2008) (“We believe that this command
    places an affirmative duty on the district court to examine relevant evidence.”). “Notably, ‘the
    ultimate burden of persuasion regarding [discriminatory] motivation rests with, and never shifts
    from” the party raising the Batson challenge. United States v. Mahan, 
    190 F.3d 416
    , 424 (6th
    Cir. 1999) (quoting 
    Purkett, 514 U.S. at 768
    ).
    Noticeably, Batson contains no discussion of religion as the district court erroneously
    suggested. As the government correctly points out, whether Batson’s reasoning extends to
    religion remains unclear. See Appellee Br. 17; see also United States v. Stafford, 
    136 F.3d 1109
    ,
    1114 (7th Cir. 1998) (“The constitutional status of peremptory challenges based on religion is
    unsettled. . . .”); Davis v. Minnesota, 
    511 U.S. 1115
    (1994) (denial of certiorari in case raising
    the issue). Though the district court appeared to think that Batson extended to religion, see, e.g.,
    R. 716 at 7405, we take no position on the issue.
    3.       Merits of Mahbub’s prima facie challenge
    The issue that we must resolve is whether the district court improperly denied Mahbub’s
    prima facie challenge. In other words, we must determine whether the district court erred in
    concluding that Mahbub had not met her burden of showing that the government’s peremptory
    strike of Mr. Syed from the jury raised an inference of purposeful discrimination.13 Upon review
    13
    In its brief, the government indicates that the district court completed all three steps of the Batson
    inquiry. Appellee Br. 25. (“The district court also arguably sufficiently addressed Batson’s third step when ‘it
    rejected the Batson challenge after the government offered its race-neutral explanation and the defense counsel
    offered a brief rebuttal’ before ‘allowing the proceedings to continue.’”) (quoting United States v. Du, 570 F. App’x
    490, 497 (6th Cir. 2014)). According to the government, the relevant inquiry on appeal might be whether the district
    court clearly erred in ruling that there was no evidence of purposeful discrimination—and not whether there was any
    inference of purposeful discrimination to support a prima facie case.
    However, it is clear that the district court never ruled on the ultimate question of discrimination. We faced
    the same set of circumstances in United States v. Ervin, 266 F. App’x 428 (6th Cir. 2008). In Ervin, the district
    court ruled that the defendant failed to make a prima facie showing, but still invited the prosecutor to provide a race-
    neutral explanation. 
    Id. at 433.
    After the prosecutor provided one, the district court denied the challenge. 
    Id. In arguing
    that the district court failed to complete all three Batson steps, the defendant relied on the Supreme Court’s
    reasoning in Hernandez v. New York, 
    500 U.S. 352
    (1991). 
    Id. In that
    case, the Supreme Court held that once the
    prosecutor has offered a race-neutral explanation and the trial court has ruled on the ultimate question of intentional
    discrimination, the preliminary issue of intentional discrimination becomes moot. 
    Hernandez, 500 U.S. at 359
    . But
    we concluded that Hernandez was inapplicable. Ervin, 266 F. App’x at 433. Whereas the prosecutor in Hernandez
    provided his explanation without any prima facie ruling from the trial court, the Ervin trial court had ruled on the
    No. 14-1499                             United States v. Mahbub                                     Page 14
    of the voir dire transcript and relevant case law, we conclude that the district court: (1) erred in
    requiring Mahbub to show that she was a member of cognizable racial group; and (2) failed to
    recognize that the government’s use of “contrasting voir dire questions” could raise an inference
    of discrimination. See 
    Dretke, 545 U.S. at 255
    ; Echlin v. LeCureux, 
    995 F.2d 1344
    , 1350 (6th
    Cir. 1993). We address each of these errors in turn.
    i.      First element of prima facie case.
    The Supreme Court held in Powers v. Ohio that a white criminal defendant could
    challenge under Batson a prosecutor’s race-based peremptory 
    strike. 499 U.S. at 402
    . We later
    reasoned that “[i]f a member of the majority race can be considered a member of a racial group
    capable of being singled out for differential treatment”—as in Powers—“the first requirement is
    automatically met by every defendant who objects to a prosecutor’s use of race-based
    peremptory challenges.” 
    Echlin, 995 F.2d at 1350
    (internal quotation marks omitted). Put
    another way, Powers “rendered meaningless Batson’s first requirement for a prima facie case of
    discrimination.” 
    Id. In denying
    Mahbub’s Batson challenge, the district court concluded that Mahbub did not
    show that she was a member of a cognizable racial group. R. 716 at 7407. The district court was
    right. At no point before the district court’s ruling did defense counsel ever show that Mahbub
    was a member of cognizable racial group. But this failure on Mahbub’s part is of no legal
    consequence. See 
    Echlin, 995 F.2d at 1350
    . Thus, the district court’s reliance on Mahbub’s
    failure to identify herself as a member of a cognizable racial group in denying the Batson
    challenge was a mistake of law, and so remand is proper. 
    Cecil, 615 F.3d at 685
    . Though
    remand is proper on this ground, we nonetheless discuss the district court’s rulings with respect
    to the other elements of the prima facie case.
    ii.     Second element of prima facie case.
    As explained above, the prospective juror need not be of the same race as the defendant.
    
    Powers, 499 U.S. at 402
    ; 
    Echlin, 995 F.2d at 1350
    . It is unclear whether the district court
    prima facie challenge. 
    Id. Ervin’s reading
    of Hernandez is persuasive, and so we similarly conclude that the main
    issue on appeal is whether the district court erred in denying Mahbub’s Batson prima facie challenge.
    No. 14-1499                                United States v. Mahbub                                          Page 15
    believed that Mahbub and Mr. Syed had to be of the same race in order for Mahbub to prevail on
    her Batson challenge. R. 716 at 7407. For that reason, we take no position on whether the
    district court erred here, but we take this opportunity to clarify this element in order to avoid
    confusion on remand.
    iii.     Third element of prima facie case.
    The district court also erred when it addressed the third element of the prima facie case—
    namely, that the facts and relevant circumstances raise an inference that the juror was excluded
    on the basis of race. See 
    Batson, 476 U.S. at 96
    . While discussing the prosecutor’s use of voir
    dire questions, the district court indicated that the questions themselves needed to—on their
    face—relate to a juror’s race to support an inference of discrimination. See R. 716 at 7407
    (“I don’t think Mr. Gobena asked any questions relative to Mr. Syed’s ethnic background or his
    race or religious background.”); 
    id. at 7406
    (“I actually think all of the questions posed about
    anything related to religion or ethnic background or their coming from that region of South
    Asian descent are all questions that have been raised by the Defense . . . .”) (emphasis added).
    Defense counsel pointed out that the prosecutor need not ask questions related to a juror’s race
    because those questions were posed in the juror questionnaires. 
    Id. at 7410.
    The district court
    rejected that argument because defense counsel had stipulated to those questions. 
    Id. at 7413.
    And on those questionnaires, Mr. Syed volunteered that he was Pakistani. R. 746 at 8718. By
    stating that defense counsel was himself responsible for asking questions related to a prospective
    juror’s race, the district court found that he had engaged in a line of questioning that the
    government would be prohibited from initiating.
    By requiring that the questions themselves must relate to a juror’s race, the district court
    narrowed Batson, and thus placed a more “onerous” burden on Mahbub than one warranted
    under the law. Johnson v. California, 
    545 U.S. 162
    , 170 (2005).14 But, quite simply, there is
    14
    We recognize that defense counsel also stated that the questions themselves needed to relate to race or
    ethnicity. See, e.g., R. 716 at 7410 (“What I’m saying is that Batson says that if the [g]overnment makes inquiries to
    the juror about racial and ethnic reasons as one of the factors the Court considers in evaluating if the challenge is
    appropriate or discriminatory. . . .”); 
    id. at 7410–11
    (“I think what the Batson Court was saying is that if the
    Government seeking this information from jurors as a basis for peremptory challenge, that is a factor to consider.”).
    To the extent that the defense counsel agreed with the district court that the questions must relate to race or ethnicity,
    we think it is appropriate to sua sponte address this mistake of law. See, e.g., Rodgers v. Fisher Body Div. Gen.
    No. 14-1499                               United States v. Mahbub                                        Page 16
    more than one way a question can reveal an inference of purposeful discrimination. One way an
    inference could be established is if the prosecutor asks jurors of different races “contrasting voir
    dire questions.” 
    Dretke, 545 U.S. at 255
    . In this case, defense counsel, during voir dire, posed a
    hypothetical scenario in which prospective jurors had children who “might get caught up in
    something.” R. 716 at 7345–46. Ms. Brown and Mr. Syed were the only two jurors who
    responded to the question in the affirmative. See 
    id. at 7345–47.
    The prosecutor asked Ms.
    Brown whether her sympathy for people who get caught in “sticky situations” would make her
    want to give them a “pass.” 
    Id. at 7378.
    He further asked her the following question: “Are you
    willing to give them a pass, maybe they didn’t know how to get out of it or are you going to go
    by weighing the evidence?” 
    Id. at 7379.
    Ms. Brown responded that she would weigh the
    evidence. 
    Id. By contrast,
    the prosecutor never posed Mr. Syed—the stricken juror who
    answered similarly to Ms. Brown—the same follow-up question. Even though Mr. Syed uttered
    an unintelligible response, see 
    id. at 7346,
    the prosecutor apparently thought it was only worth
    clarifying Ms. Brown’s, see Appellant Br. 28.
    The use of “contrasting questions” here is similar to the questions at issue in Dretke,
    which confirms that the district court’s error was plain. In proving purposeful discrimination, the
    Dretke petitioner relied on the prosecutor’s use of “contrasting voir dire questions posed
    respectively to black and nonblack panel members, on two different subjects.” 
    Dretke, 545 U.S. at 255
    . For example, the prosecutor made statements before asking prospective jurors their
    thoughts on capital punishment. 
    Id. According to
    the petitioner, “[s]ome of these prefatory
    statements were cast in general terms, but some followed the so-called graphic script, describing
    the method of execution in rhetorical and clinical detail.” 
    Id. This was
    purportedly “intended
    . . . to prompt some expression of hesitation to consider the death penalty and thus to elicit
    plausibly neutral grounds for a peremptory strike of a potential juror subjected to it, if not a strike
    for cause.” 
    Id. “If the
    graphic script is given to a higher proportion of blacks than whites, this is
    evidence that prosecutors more often than not wanted blacks off the jury, absent some neutral
    Motors Corp., 
    739 F.2d 1102
    , 1106 (6th Cir. 1984), cert. denied, 
    470 U.S. 1054
    (1985) (reversing award of damages
    where defendant’s proposed jury instruction failed to accurately state controlling legal principle and defendant failed
    to raise issue about the correct legal principle on appeal); see also United States v. Atkinson, 
    297 U.S. 157
    , 160
    (1936) (“In exceptional circumstances, especially in criminal cases, appellate courts, in the public interest, may, of
    their own motion, notice errors to which no exception has been taken, if the errors are obvious, or if they otherwise
    seriously affect the fairness, integrity, or public reputation of judicial proceedings.”).
    No. 14-1499                         United States v. Mahbub                            Page 17
    and extenuating explanation.” 
    Id. After considering
    the questionnaires and voir dire testimony,
    as well as the prosecutor’s explanations, the Court concluded that the “black venire members
    were more likely than nonblacks to receive the graphic script.” 
    Id. at 258.
    The Court referred to
    the prosecutor’s use of contrasting questions as “disparate questioning.” 
    Id. at 256.
    Dretke
    counsels that, when determining if an inference of purposeful discrimination exists, an inquiry
    solely into whether the question posed related to race—like the type of inquiry the district court
    engaged in here—is deficient.
    The district court’s error in narrowly reading Batson is a mistake of law that does not pass
    muster under plain-error review.
    ***
    In sum, the district court misstated and misapplied the law in denying the Batson
    challenge. In doing so, it made it more difficult for Mahbub to prevail than the law permits. For
    this reason, we reverse the district court’s ruling and we remand the issue of whether, upon
    applying the correct legal standard and test, Mahbub’s Batson challenge requires that the
    conviction be reversed. See 
    McAllister, 693 F.3d at 582
    .
    iv.       Miscellaneous argument.
    Mahbub also urges us to perform a comparative juror analysis between Mr. Syed and Ms.
    Brown. Appellant Br. 28. This argument is also unpreserved. See Crawford, 60 F. App’x. at
    535. Faced with this situation, the Supreme Court has cautioned that a
    retrospective comparison of jurors based on a cold appellate record may be very
    misleading when alleged similarities were not raised at trial. In that situation, an
    appellate court must be mindful that an exploration of the alleged similarities at
    the time of trial might have shown that the jurors in question were not really
    comparable.
    Snyder v. Louisiana, 
    552 U.S. 472
    , 483 (2008). In Snyder, over fifty prospective jurors indicated
    that they had work or personal commitments that would interfere with their jury service. 
    Id. at 476.
    The government exercised a peremptory challenge to strike a black prospective juror, who
    purportedly had conflicting work commitments; this would have prompted the juror to achieve a
    “quick resolution” in this capital case. 
    Id. at 482.
    The Supreme Court concluded that this race-
    No. 14-1499                            United States v. Mahbub                          Page 18
    neutral explanation was implausible because, among other things, another white juror, whose
    personal obligations were “substantially more pressing,” was not stricken. 
    Id. at 484.
    The
    Snyder Court determined that a retrospective comparison was appropriate in that particular case
    because the purportedly “shared characteristic” was “thoroughly explored by the trial court.” 
    Id. at 483.
    Beyond this statement, however, the Supreme Court did not provide any additional
    guidance as to when it would be proper for an appellate court to conduct a comparative juror
    analysis when the parties did not raise the alleged similarities between prospective jurors before
    the district court. Nor is it clear from the Supreme Court’s opinion as to what constitutes a
    “thorough[] explor[ation]” of a particular issue. See 
    id. Because we
    conclude that remand is appropriate for separate reasons, we need not decide
    whether a comparative juror analysis is appropriate here. In any event, our case law explains that
    this court is by no means compelled to conduct a comparative juror analysis when a defendant
    failed to preserve the issue. 
    Cecil, 615 F.3d at 687
    (“If neither party argues for such analysis to
    prove or disprove purposeful discrimination, the district court’s failure to undertake it is not
    necessarily reversible error.”).
    B.       Jury Instruction
    For the first time on appeal, Mahbub argues that the district court’s jury instruction
    concerning the element of criminal conspiracy was erroneous. Appellant Br. 33–38. Thus, this
    issue is unpreserved. Mahbub concedes that the plain-error standard of review applies here. 
    Id. at 38–39;
    see also United States v. Morrow, 
    977 F.2d 222
    , 226 (6th Cir. 1992) (en banc). Plain
    error “requires a finding that, taken as a whole, the jury instructions were so clearly erroneous as
    to likely produce a grave miscarriage of justice.” United States v. Semrau, 
    693 F.3d 510
    , 528
    (6th Cir. 2012).
    The district court used the Sixth Circuit Pattern Criminal Jury Instruction § 3.03, which,
    in relevant part, stated as follows:
    If you are convinced that there was a criminal agreement, then you must decide
    whether the Government has proved that the Defendant knowingly and
    voluntarily joined the agreement. To convict the Defendant, the Government
    No. 14-1499                        United States v. Mahbub                              Page 19
    must prove that she knew the conspiracy’s main purpose and that she voluntarily
    joined it intending to help advance or achieve its goals.
    This does not require proof that the Defendant knew everything about the
    conspiracy or everyone else involved in it, or that she was a member of it from the
    very beginning. Nor does it require proof that the Defendant played a major role
    in the conspiracy or that her connection to it was substantial. A slight role or
    connection may be enough.
    But proof that the Defendant simply knew about a conspiracy or was present at
    times or associated with members of the group is not enough, even if she
    approved of what was happening or did not object to it. Similarly, just because
    the Defendant may have done something that happened to help a conspiracy does
    not make her a conspirator.
    R. 720 at 8064–65. Mahbub contends that the jury instruction lowers the burden of proof to
    support a conviction. Appellant Br. 34 (citing Sullivan v. Louisiana, 
    508 U.S. 275
    (1993)).
    Mahbub’s contention lacks merit. The instruction states, and the district court read, “[a]
    slight role or connection may be enough” to link a defendant to a conspiracy, which is an
    accurate legal proposition. See United States v. Price, 
    258 F.3d 539
    , 544 (6th Cir. 2001) (“The
    connection of the defendant to the conspiracy need only be slight, if there is sufficient evidence
    to establish that connection beyond a reasonable doubt.”); United States v. Betancourt, 
    838 F.2d 168
    , 174 (6th Cir. 1988) (“The existence of a connection to the conspiracy must be shown
    beyond a reasonable doubt, but the importance of the connection need not be great.”). To the
    extent that the disputed language lowers the burden of proof to support a conviction, we note that
    “no single provision of the jury instruction can be read in isolation;” instead, “the charge must be
    considered as a whole.” United States v. Horton, 
    847 F.2d 313
    , 322 (6th Cir. 1988). In this case,
    the district court made it abundantly clear that the reasonable-doubt standard applied in
    determining whether Mahbub should be found guilty of criminal conspiracy: “You must be
    convinced that the Government has proved all of these elements beyond a reasonable doubt in
    order for you to find the Defendant guilty of the conspiracy charge.” R. 720 at 8061, 8071.
    In support of Mahbub’s argument that the jury instruction was erroneous, Mahbub relies
    on a concurring opinion in United States v. Huezo, 
    546 F.3d 174
    , 184 (2d Cir. 2008) (Newman,
    J., concurring). In that case, the concurring opinion contends that the use of the term “slight
    evidence” in the following legal proposition lowers the burden of proof required to support a
    No. 14-1499                          United States v. Mahbub                               Page 20
    conspiracy conviction: “Once a conspiracy is shown, only slight evidence is needed to link
    another defendant with it.” 
    Id. at 184.
    Even references to “slight connection”—i.e., like the
    district court’s instruction here that a “slight . . . connection” to a conspiracy is enough to support
    a conviction—“inevitably create[s] the risk of lowering the standard of proof significantly below
    ‘beyond a reasonable doubt.’” 
    Id. at 189.
    Without taking any stance on the merits of the
    concurring opinion’s position, we cannot conclude that the use of a jury instruction that finds
    support in Sixth Circuit case law, 
    Price, 258 F.3d at 544
    , constitutes plain error.
    C.      Ineffective assistance of counsel
    Mahbub also asserts that her counsel rendered ineffective assistance of counsel for failing
    to object to the jury instruction containing the “slight connection” language. Appellant Br. 41.
    To prevail on this claim, Mahbub must satisfy the two-prong test established by the Supreme
    Court in Strickland v. Washington, 
    466 U.S. 668
    , 687–88 (1984): (1) the defendant’s counsel’s
    performance was deficient, or put differently, “fell below an objective standard of
    reasonableness”; and (2) the performance prejudiced the defendant. “Ordinarily we will not
    review a claim of ineffective assistance of counsel on direct appeal”—as is the case here—
    “because the record is usually insufficient to permit an adequate review of such a claim.” United
    States v. Wynn, 
    663 F.3d 847
    , 850 (6th Cir. 2011). Instead, it is more appropriate to raise these
    claims in a post-conviction proceeding under 28 U.S.C. § 2255. United States v. Catchings, 
    708 F.3d 710
    , 715 n.3 (6th Cir. 2013).
    In this case, however, the ineffective-assistance-of-counsel claim is predicated on
    Mahbub’s counsel’s purported failure to object to the jury instruction, which, as shown above,
    was consistent with Sixth Circuit case law.         
    Price, 258 F.3d at 544
    .       Because Mahbub’s
    ineffective-assistance-of-counsel argument is contingent on her successful challenge of the jury
    instruction, it too is meritless. United States v. Jones, 
    489 F.3d 243
    , 255 (6th Cir. 2007) (holding
    that defendant was not entitled to relief on ineffective-assistance-of-counsel claim because
    underlying claim was resolved on the merits).
    No. 14-1499                              United States v. Mahbub                                     Page 21
    D.         Sentencing
    Mahbub next challenges the district court’s imposition of her 46-month sentence.
    1.       Calculation of Loss
    Mahbub contends that the district court incorrectly calculated the monetary loss that
    should be attributed to her. Appellant Br. 55. According to Mahbub, she was “personally . . .
    paid $33,000,”15 and the district court should have imposed a six-level increase to her offense
    level rather than an eighteen-level increase. 
    Id. at 60.
    Mahbub’s applicable guideline range
    would have been, therefore, 15–21 months. 
    Id. at 61.
    The district court, however, estimated the
    entire loss to be between $2.5 million and $7 million. R. 722 at 8187. This rendered an
    applicable guideline range of 63-78 months. In the end, Mahbub was sentenced to forty-six
    months. R. 682.
    We review a district court’s calculation of the amount of loss for clear error. United
    States v. Blackwell, 
    459 F.3d 739
    , 772 (6th Cir. 2006). To challenge this calculation, Mahbub
    must “carry the burden of demonstrating that the court’s evaluation of the loss was not only
    inexact but outside the universe of acceptable computations.” United States v. Raithatha,
    
    385 F.3d 1013
    , 1024 (6th Cir. 2004), vacated and remanded on other grounds, 
    543 U.S. 1136
    (2005) (internal quotation marks omitted). When determining the amount of loss for sentencing
    purposes, “a defendant will be held accountable for the actual or intended loss to a victim,
    whichever is greater, or a combination thereof.” 
    Id. (citing United
    States v. Wade, 
    266 F.3d 574
    ,
    586 (6th Cir. 2001)); see also U.S. Sentencing Guidelines Manual § 2B1.1 n.3(A)(ii). “[S]o long
    as the intended loss is supported by a preponderance of the evidence, the district court may use it
    in reaching the appropriate offense level.” 
    Raithatha, 385 F.3d at 1024
    (quotation omitted). The
    Sentencing Guidelines clarified that “intended loss” “includes intended pecuniary harm that
    would have been impossible or unlikely to occur.” 
    Id. (quoting §
    2B1.1, comment. n.3(A)(ii))
    (emphasis added).
    During the sentencing hearing, the district court relied on the stipulations provided by
    Mahbub’s counsel in order to conclude that the loss amounts exceeded $2.5 million but were less
    15
    Presumably, this amount reflects the total amount Mahbub was paid during her tenure at All American.
    No. 14-1499                                United States v. Mahbub                                 Page 22
    than $7 million. R. 722 at 8186–87.16 In this instance, reliance on this stipulation was not clear
    error. See, e.g., United States v. Davis, 
    74 F.3d 1241
    , 
    1996 WL 15622
    , at *4 (6th Cir. Jan. 16,
    1996) (noting that defendants could not contest court’s determination of relevant total loss in part
    because of their “stipulat[ion] to the amount of loss in pretrial proceedings”) (unpublished table
    decision); see also United States v. Sloan, 
    492 F.3d 884
    , 893 (7th Cir. 2007) (“By stipulating to
    the loss amount, he effectively admitted the fact that the loss amount was $19,654.60 and waived
    any subsequent challenge to this fact.”). Further, the court did not need to rely on the amounts
    that Mahbub personally received to calculate loss under § 2B1.1 of the United States Sentencing
    Guidelines. United States v. Wilkins, 308 F. App’x 920, 929 (6th Cir. 2009) (“Here, actual loss
    included not only the amount of proceeds defendant himself pocketed, but also the amount of
    loss resulting from the entire scheme.”).
    2.       Sentence Disparity
    Mahbub also argues that the district court’s sentence creates a disparity between Mahbub
    and the other two defendants indicted in the same conspiracy, Mohammed Shahab and Hassan
    Akhtar. See Appellant Br. 56. Specifically, Mahbub argues that Akhtar’s sentence is twenty
    months shorter than Mahbub’s sentence yet he was “second in command under Shahab” and
    “received kickbacks from therapists, forged a doctor’s signature, and laundered money.” 
    Id. at 57.
    Meanwhile, Mahbub argued that Shahab was the “mastermind[]” as he was the owner of
    eight companies and defrauded Medicare of more than $18 million. 
    Id. He, however,
    received a
    sentence of fifty months—four months longer than Mahbub’s. See 
    id. 16 The
    colloquy on this point occurred as follows:
    THE COURT: And do you think that during the trial, the amount of all the billings made during
    the time she was there is part of the evidence.
    GOVERNMENT: The billings during the time she was there, she stipulated to it.
    THE COURT: And that’s the 5.8
    DEFENSE COUNSEL: We stipulated that the company billed Medicare in these amounts.
    GOVERNMENT: And stipulated to the time frame she was there.
    She stipulated she received checks from 2008 to September 2009.
    THE COURT: That is an amount more than 4.6
    DEFENSE COUNSEL: It is. It is still less than 7, but more than 4.6
    R. 722 at 8186–87.
    No. 14-1499                         United States v. Mahbub                               Page 23
    We review the reasonableness of a sentence under the abuse-of-discretion standard. Gall
    v. United States, 
    552 U.S. 38
    , 56 (2007). “A sentence is substantively unreasonable if the district
    court selects a sentence arbitrarily, bases the sentence on impermissible factors, fails to consider
    relevant sentencing factors, or gives an unreasonable amount of weight to any pertinent factor.”
    United States v. Camiscione, 
    591 F.3d 823
    , 832 (6th Cir. 2010).
    Here, although 18 U.S.C. § 3553(a)(6) identifies “the need to avoid unwarranted sentence
    disparities” as a factor at sentencing, we have previously explained that “this factor concerns
    national disparities between defendants with similar criminal histories convicted of similar
    criminal conduct—not disparities between co-defendants.” United States v. Conatser, 
    514 F.3d 508
    , 521 (6th Cir. 2008) (citing United States v. Simmons, 
    501 F.3d 620
    , 623–24 (6th Cir.
    2007)). The district court was simply not required to consider Mahbub’s sentence in light of
    sentences imposed on Akhtar and Shahab. “A district judge, however, may exercise his or her
    discretion and determine a defendant’s sentence in light of a co-defendant’s sentence.”
    
    Simmons, 501 F.3d at 624
    . That is what the district court did here. Even though Mahbub’s
    “leadership” role warranted a two-level enhancement under § 3B1.1, it declined to apply it after
    Mahbub’s trial counsel argued that Maria Suleman—another clinic office manager—did not
    receive that same enhancement. See R. 722 at 8177–8181; 
    id. at 8211
    (“I don’t think, to be
    consistent with the participation of her and Ms. Suleman, there should not be any points given
    for adjustment for [her] role in the offense. . . .”). Put another way, the district court’s effort to
    avoid sentencing disparities only benefitted Mahbub. In this regard, the imposition of the
    sentence was not substantively unreasonable. We also note that Mahbub’s 46-month sentence is
    below the 63-78 months range calculated by the district court. R. 722 at 8213. Defendants who
    seek to prevail on a substantive-reasonableness challenge to a below-guidelines sentence “bear a
    heavy burden”—a point Mahbub concedes—but she simply failed to carry that burden here.
    United States v. Greco, 
    734 F.3d 441
    , 450 (6th Cir. 2013); Appellant Br. 55.
    3.      Offer to cooperate
    Mahbub next contends that she is entitled to a lesser sentence because the government
    “declined her offer to cooperate.” Appellant Br. 60. So, she argues she should have received a
    one-level reduction in her offense level. But because Mahbub offers no legal argument in
    No. 14-1499                              United States v. Mahbub                                       Page 24
    support of this position and fails to identify the applicable guideline provision upon which she
    relies, we decline to consider this argument. See McPherson v. Kelsey, 
    125 F.3d 989
    , 995 (6th
    Cir. 1997) (“[I]ssues adverted to in a perfunctory manner, unaccompanied by some effort at
    developed argumentation, are deemed waived.”).17
    III.    CONCLUSION
    For the reasons stated above, we AFFIRM the district court in every respect except for
    the Batson ruling. We REMAND the case to the district court for a proper determination of
    whether there is an inference that the government engaged in purposeful discrimination. If so,
    the district court must proceed to the subsequent steps of the Batson inquiry to determine
    whether a new trial is warranted.
    17
    Another argument that Mahbub makes is that the district court should not have increased her offense
    score by two levels for being a manager because she was “at the bottom of the organizational chart.” Appellant Br.
    60. This argument is without merit, as the district court did not add a two-level enhancement for her role. R. 722 at
    8211. Mahbub later acknowledges in her reply brief that she did not receive a two-level enhancement. Reply Br. 9.