United States v. Citlalli Flores ( 2015 )


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  •                   FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,             No. 14-50027
    Plaintiff-Appellee,
    D.C. No.
    v.                  3:12-cr-03054-MMA-1
    CITLALLI FLORES,
    Defendant-Appellant.            OPINION
    Appeal from the United States District Court
    for the Southern District of California
    Michael M. Anello, District Judge, Presiding
    Argued and Submitted
    December 8, 2014—Pasadena, California
    Filed September 23, 2015
    Before: Harry Pregerson, Kim McLane Wardlaw,
    and Marsha S. Berzon, Circuit Judges.
    Opinion by Judge Wardlaw
    Dissent by Judge Pregerson
    2                  UNITED STATES V. FLORES
    SUMMARY*
    Criminal Law
    Affirming a conviction and sentence for importation of
    marijuana, the panel found merit in the defendant’s claims of
    prosecutorial misconduct, but held that the misconduct does
    not rise to the level of plain error.
    The panel held that the government misstated the law by
    telling the jury it could convict the defendant based on her
    admission to carrying marijuana to Mexico on the date of
    her arrest, and misstated the defendant’s testimony thereby
    making an unsupported factual claim, but that the
    misstatements did not substantially prejudice her. The panel
    held that the government’s improper vouching for a witness
    did not substantially prejudice the defendant. The panel
    rejected the defendant’s contentions that the government
    improperly shifted and undermined the burden of proof. The
    panel rejected the defendant’s arguments that the prosecutor’s
    statements about the defendant were improper. Reviewing
    for plain error, the panel concluded that the prosecution’s
    improper statements, whether viewed individually or
    cumulatively, do not warrant reversal.
    The panel rejected the defendant’s arguments that the
    district court erred in denying her motion to suppress
    evidence obtained from her Facebook account and that the
    district court abused its discretion by admitting evidence of
    her personal drug use at trial.
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    UNITED STATES V. FLORES                    3
    The panel held that the district court did not err in
    applying an obstruction of justice enhancement pursuant to
    U.S.S.G. § 3C1.1 based on the defendant’s efforts to have
    content from her Facebook account deleted.
    Dissenting, Judge Pregerson wrote that the Assistant U.S.
    Attorney’s serious violations of the rules of permissible
    questioning and argument do not warrant invocation of the
    plain error rule.
    COUNSEL
    Morgan D. Stewart (argued), Federal Defenders of San
    Diego, Inc., San Diego, California, for Defendant-Appellant.
    Michelle L. Wasserman (argued), Laura E. Duffy, and Bruce
    R. Castetter, Office of the United States Attorney, San Diego,
    California, for Plaintiff-Appellee.
    OPINION
    WARDLAW, Circuit Judge:
    Citlalli Flores appeals her conviction and sentence for
    importation of marijuana in violation of 
    21 U.S.C. §§ 952
     and
    960. Although we find merit in her claims of prosecutorial
    misconduct, the misconduct does not rise to the level of plain
    error. Flores’s remaining claims of error lack merit.
    Accordingly, we affirm her conviction and sentence.
    4                   UNITED STATES V. FLORES
    I. FACTUAL AND PROCEDURAL BACKGROUND
    On the evening of June 21, 2012, Flores was stopped by
    Customs and Border Protection (“CBP”) Officer Benjamin
    Brown as she entered the United States following a day trip
    to Tijuana, Mexico. When Flores handed Brown her driver’s
    license, her hands were shaking, and she looked back towards
    the rear passenger-side of her car several times. Brown
    became suspicious, inspected that area of the car, and found
    several packages of what turned out to be marijuana. CBP
    officers then searched the rest of Flores’s car, where they
    discovered 16.44 kilograms (36.24 pounds) of marijuana.
    Flores was indicted on one count of importation of
    marijuana in violation of 
    21 U.S.C. §§ 952
     and 960.1 Flores’s
    first trial resulted in a hung jury. Upon retrial, a jury
    rendered a guilty verdict. The district judge imposed a two-
    level enhancement for obstruction of justice, but then
    substantially reduced her sentence in light of U.S.S.G.
    § 5K2.0 and the 
    18 U.S.C. § 3553
    (a) factors, ultimately
    imposing a term of incarceration of 12 months and one day in
    prison.2
    Flores’s defense rested on her lack of knowledge that her
    car was loaded with marijuana as she entered the United
    States. She testified that while she was in Tijuana on June 21,
    1
    Section 952(a) provides: “It shall be unlawful . . . to import into the
    United States from any place outside thereof . . . any controlled substance
    in schedule I or II,” including marijuana.
    2
    The district court explained that by adding the extra day to Flores’s
    sentence, she would be eligible for a reduction in the custodial portion of
    her sentence.
    UNITED STATES V. FLORES                    5
    2012, she gave her car to a mechanic named Juan so that he
    could repair her air conditioning more cheaply than she could
    have it done in the United States. She suggested that Juan
    had hidden the marijuana in the quarter panels of her car
    while it was in the mechanic shop. Competing automotive
    experts testified about whether (1) Flores’s air conditioning
    was in fact working on June 21; (2) Flores could have felt the
    weight and noise-dampening effect of the marijuana while
    she drove; and (3) car repairs were cheaper in Mexico.
    The government noted Flores’s failure to provide
    corroborating evidence that the repair work was done or that
    Juan even existed, and offered evidence of her behavior at the
    border and following her arrest as proof that she knew drugs
    were hidden in her car. The government also introduced two
    jail-recorded phone calls Flores made after her arrest. The
    first evidenced concern that her actions had hurt her family
    and the other was a request that her cousin delete “whatever
    [he] fe[lt] need[ed] to be taken off” of Flores’s Facebook
    page. The latter call prompted the government to search her
    Facebook account for incriminating evidence. This search, in
    turn, led to two Facebook messages Flores had sent on June
    21 referencing her “carrying” or “bringing” marijuana, which
    were introduced over Flores’s objections and following the
    denial of her suppression motion.
    Flores testified that the postings indicated only that she
    carried marijuana on June 21 from the United States into
    Mexico, not that she was about to smuggle marijuana from
    Mexico into the United States. In this appeal, she argues that
    the government committed misconduct by distorting her
    testimony in closing. For example, the prosecutor asked her,
    “so it’s undisputed that on the day of your arrest, you
    definitely brought drugs between the United States and
    6                  UNITED STATES V. FLORES
    Mexico” and “across the international border?”3 The
    prosecutor also asked Flores if it was “illegal” to bring
    marijuana into Mexico—a misleading question given that
    Flores was on trial for importation, not exportation.4 And,
    after emphasizing that Flores admitted to “smuggling drugs,”
    the prosecutor argued during closing that Flores lied when
    she testified that the messages referred to exportation—not
    importation—of marijuana. Further, after acknowledging that
    Flores claimed she brought drugs to Mexico only, the
    prosecutor asserted, “[t]hat’s still smuggling drugs”—a
    supposed crime that was not charged. In her final line to the
    jury, the prosecutor emphasized: “She knows she was
    smuggling drugs on June 21st, 2012. You heard her say that
    repeatedly and that’s why she’s guilty beyond a reasonable
    doubt.”
    In addition to claiming that the government engaged in
    prosecutorial misconduct, Flores argues on appeal that (1) the
    district court erred in denying her motion to suppress; (2) the
    district court abused its discretion by admitting Facebook
    messages and other unduly prejudicial evidence referencing
    Flores’s marijuana use; and (3) the district court procedurally
    3
    The prosecutor also asked Flores how often she brings “pot between
    the United States and Mexico,” without specifying a direction of travel.
    At other points, the prosecutor accurately characterized Flores’s
    testimony. For example, the prosecutor asked: “So your testimony is you
    brought drugs from the United States to Mexico but not from Mexico into
    the United States?”; “Do you have an estimate of when you brought drugs
    from the United States into Mexico?”; and “You had driven drugs once
    again from the United States to Mexico.”
    4
    Technically, the answer to the government’s question is, “Yes,” as
    
    21 U.S.C. § 953
     criminalizes the exportation of a controlled substance.
    But Flores was indicted only for knowingly and intentionally importing
    marijuana, in violation of §§ 952 and 960.
    UNITED STATES V. FLORES                    7
    erred in applying an obstruction of justice enhancement at
    sentencing. We address Flores’s arguments in turn.
    II. PROSECUTORIAL MISCONDUCT
    We review de novo whether any prosecutorial misconduct
    occurred. See United States v. Weatherspoon, 
    410 F.3d 1142
    ,
    1145–46 (9th Cir. 2005); United States v. Ross, 
    123 F.3d 1181
    , 1187 (9th Cir. 1997). We then consider the effect of
    any misconduct to determine whether reversal is warranted.
    See Weatherspoon, 
    410 F.3d at
    1150–51. Where Flores
    objected at trial, we review for harmless error; where she did
    not, we review under the more deferential plain error
    standard. See United States v. Ruiz, 
    710 F.3d 1077
    , 1082 (9th
    Cir. 2013).
    A. Misstating the Law and Facts
    Flores contends that the government committed
    misconduct by erroneously telling the jury that it could
    convict her based on her admission to carrying marijuana to
    Mexico on the date of her arrest. We agree that the
    government misstated the law to the jury. See United States
    v. Berry, 
    627 F.2d 193
    , 200 (9th Cir. 1980) (“A prosecutor
    should not misstate the law in closing argument.”). The
    government also misstated Flores’s testimony, thereby
    making an unsupported factual claim. See United States v.
    Kojayan, 
    8 F.3d 1315
    , 1321 (9th Cir. 1993); see also United
    States v. Mageno, 
    762 F.3d 933
    , 943 (9th Cir. 2014), vacated
    on other grounds, 
    786 F.3d 768
     (9th Cir. 2015). Flores did
    not object to this misconduct below, however, so we review
    for plain error. We conclude that the misstatements did not
    substantially prejudice her, and so do not warrant reversal.
    See Ruiz, 710 F.3d at 1082.
    8                    UNITED STATES V. FLORES
    1. The Prosecution’s Impermissible Statements
    The government crossed the line between permissible
    commentary on Flores’s testimony about her Facebook
    messages and that which we have long deemed
    impermissible. In a message dated June 21, 2012, Flores’s
    friend asked if she “carried some pot,” to which Flores
    responded, “yes.”5 In a second pair of June 21 messages,
    Flores says to a different friend, “come over and have a
    smoke” “of what I’m bringing.”6 Flores testified that these
    messages meant that she was bringing marijuana to Mexico
    and argued that they did not prove that she imported
    marijuana as charged. The government characterized these
    messages differently:
    You heard about some posts on [Flores’s]
    Facebook account from June 21st 2012 when
    she said she was carrying marijuana and
    bringing marijuana. You know what she was
    carrying on June 21st 2012. She was carrying
    and bringing marijuana from Mexico into the
    United States in her car. She tried to convince
    you. She tried to explain this away. She said,
    No. No. What I was doing was bringing
    marijuana from the United States of America
    into Mexico.
    5
    The Facebook postings are in Spanish, which the government
    translated for the jury. Flores translates the conversation differently,
    asserting that the question was, “Did you take weed.”
    6
    Flores also translates this conversation differently, asserting that the
    invitation was to “come so you can smoke out of what I have.”
    UNITED STATES V. FLORES                      9
    This argument reflects the government’s apparent strategy for
    using the Facebook messages to convince the jury that Flores
    (1) admitted to carrying drugs across the U.S.-Mexico border,
    and (2) was lying about the direction she carried the drugs.
    Both parts of this strategy are permissible. Prosecutors
    are free in argument to suggest that the jury draw reasonable
    inferences from the evidence presented at trial. United States
    v. Sayetsitty, 
    107 F.3d 1405
    , 1409 (9th Cir. 1997); see also
    Mageno, 762 F.3d at 943; United States v. Molina, 
    934 F.2d 1440
    , 1445 (9th Cir. 1991) (holding that prosecutors may
    argue that a defendant is lying). Here, there was more than
    enough evidence to support a reasonable inference that the
    Facebook messages actually meant that Flores was carrying
    drugs into the United States, rather than to Mexico as she
    testified. She was, in fact, carrying more than 36 pounds of
    marijuana in her car as she entered the United States on the
    very day she sent those messages. She then attempted to
    delete postings on her Facebook account from jail after the
    border patrol discovered the marijuana in her car.
    Of course, the jury was free to believe Flores’s
    explanation that the messages actually referenced exportation
    rather than importation, but the evidence adequately
    supported the government’s characterization of them. Even
    if we were to accept that those messages conveyed a desire to
    smoke marijuana in Mexico, nothing in them rules out the
    possibility that Flores was offering her friends an opportunity
    to smoke some of the more than 36 pounds of marijuana she
    picked up in Mexico before she carried it back to the United
    States. The latter possibility is all the more plausible because
    when Flores was arrested, she was not carrying any marijuana
    other than that found hidden in her car. This evidence
    supports the permissible inference the government asked the
    10               UNITED STATES V. FLORES
    jury to draw—namely, that the Facebook messages
    referenced the very marijuana found in Flores’s car.
    This prosecutorial argument also accurately characterized
    Flores’s insistence that she carried drugs to Mexico but not to
    the United States. So long as the government accurately
    recounted what Flores said—and in the statement quoted
    above, it did—the government was free to ask the jury to
    disbelieve Flores. Further, the argument accurately states the
    law by explaining that Flores is guilty because, regardless of
    her Facebook postings and what she testified about them,
    Flores brought drugs into the United States.
    However, the government also strayed beyond the
    boundaries of permissible questioning and argument. The
    prosecutor repeatedly asserted that Flores had admitted to
    “drug smuggling.” As a legal but irrelevant matter, Flores did
    admit to drug smuggling, see 
    21 U.S.C. § 960
    —just not the
    kind of drug smuggling with which she was charged, which
    the prosecutor had to know. Labeling Flores an “admitted
    drug smuggler” when she actually admitted to exportation
    required the government to walk a very fine line. It was
    “definitely improper” for the prosecutor to suggest that Flores
    admitted to “drug smuggling” when the prosecutor used the
    term as a synonym for importation because that misstated
    Flores’s testimony. See United States v. Kojayan, 
    8 F.3d at 1321
    ; see also Mageno, 762 F.3d at 943. At the same time,
    when loosely referencing “drug smuggling” to encompass
    exportation, the government could, without misstating
    testimony, assert that Flores admitted to drug smuggling.
    However, it was improper to use the “admission to drug
    smuggling” lingo in this loose manner when suggesting that
    such an admission was sufficient to warrant a conviction for
    the crime charged. Doing so misstates the law, because
    UNITED STATES V. FLORES                     11
    Flores was not charged with exportation—the only form of
    drug smuggling to which she actually admitted.
    The prosecutor improperly used the phrase “drug
    smuggling” as a synonym for importation frequently, from
    her opening statement through her last closing line to the jury.
    The government’s arguments that Flores admitted to drug
    smuggling at trial were therefore misleading, if not outright
    false. These misstatements became flat falsehoods with the
    prosecutor’s coup de grace: “She knows she was smuggling
    drugs on June 21st, 2012. You heard her say that repeatedly
    and that’s why she’s guilty beyond a reasonable doubt.” The
    jurors knew this was an importation case, so the only way
    Flores’s admission to “drug smuggling” would be a basis for
    finding her guilty beyond a reasonable doubt is if she had
    admitted to importation. Because she never made such an
    admission at trial, this statement falsely characterized
    Flores’s testimony.
    Moreover, to the extent that the prosecutor did not
    misrepresent Flores’s testimony, she misstated the law.
    Flores admitted at trial to exportation. She therefore could be
    found guilty beyond a reasonable doubt based on this
    admission only if exportation were adequate to support a
    conviction. Because Flores was on trial for importation,
    however, the argument that knowingly exporting marijuana
    was sufficient to support a guilty verdict misstated the law.
    The prosecutor also improperly invited the jury to convict
    Flores based on exportation rather than importation during
    cross-examination. After Flores admitted to carrying drugs
    into Mexico, the prosecutor asked, “That was illegal, wasn’t
    it?” Similarly, in closing, the prosecutor acknowledged that
    Flores “claimed she had smuggled drugs from the United
    12                UNITED STATES V. FLORES
    States to Mexico,” then asserted, “[t]hat’s still smuggling
    drugs.” These statements are not technically untrue, as
    exportation is drug smuggling and is illegal. By specifically
    emphasizing the illegality of exportation, however, the
    government suggested that even if the jury believed that
    Flores only exported drugs, she “still” acted illegally. In
    doing so, the prosecutor overstepped by inviting the jury to
    improperly convict Flores based on exportation.
    The prosecutor made this worse by purposefully blurring
    and minimizing the distinction between importation and
    exportation. During cross-examination, the prosecutor asked
    whether Flores carried drugs “between” the United States and
    Mexico and “across” the border, without specifying a
    direction. In closing, the prosecutor then characterized a
    dispute over which direction the drugs traveled as a mere
    “quibble[],” minimizing the significance of that disputed fact.
    These statements, while again not untrue as an abstract legal
    matter, furthered the misimpression that the jury could
    convict Flores based on exportation.
    The government should have been much more cautious in
    brandishing the potentially misleading label of “admitted
    drug smuggler.” Had the government carefully and
    accurately used the term, it may have been able to avoid
    misstating the law or the facts. But the government was
    unable to do so, and in any event should not have tried to
    “push the envelope” in this manner. Ruiz, 710 F.3d at 1087
    (Pregerson, J., concurring). As the Supreme Court has said,
    “[t]he United States Attorney is the representative not of an
    ordinary party to a controversy, but of a sovereignty whose
    . . . interest . . . in a criminal prosecution is not that it shall
    win a case, but that justice shall be done.” Berger v. United
    States, 
    295 U.S. 78
    , 88 (1935).
    UNITED STATES V. FLORES                           13
    2. Plain Error
    Flores failed to object to any of these improper
    statements, and must therefore show that the government’s
    actions amounted to plain error. See Ruiz, 710 F.3d at 1082.
    Although there was error, and it was plain, Flores fails to
    demonstrate the prosecutor’s improper statements affected
    her substantial rights or the fairness, integrity, or public
    reputation of the proceedings. See Puckett v. United States,
    
    556 U.S. 129
    , 135 (2009); see also United States v. Olano,
    
    507 U.S. 725
    , 734 (1993). In the context of the entire trial,
    the prosecution’s misconduct was not likely to have affected
    the jury’s ability to weigh the evidence fairly. See United
    States v. Sanchez, 
    659 F.3d 1252
    , 1257 (9th Cir. 2011).
    Despite the prosecutor’s best efforts, it was unlikely that
    the jury was actually confused about Flores’s testimony or the
    elements of the charge of importation. On multiple
    occasions, during both cross-examination and closing
    arguments, the government did accurately, directly, and
    explicitly re-state Flores’s testimony.7 The defense also
    accurately reiterated Flores’s testimony in closing.8 The
    chorus of accurate characterizations of Flores’s testimony
    7
    For example, during cross-examination, the prosecutor asked: “So your
    testimony is you brought drugs from the United States to Mexico but not
    from Mexico into the United States?” In closing, the prosecutor noted that
    Flores “quibbled with the direction” in which the government argued the
    drugs traveled. Similarly, the prosecutor reminded the jury that Flores
    said, she “was bringing marijuana from the United States of America into
    Mexico,” and “claimed she had smuggled drugs from the United States to
    Mexico.”
    8
    Defense counsel conceded that Flores “would sometimes bring
    marijuana to Mexico to smoke with her cousin.”
    14                 UNITED STATES V. FLORES
    likely drowned out the government’s infrequent, indirect, and
    implicit misstatements of that testimony. Moreover, Flores’s
    testimony was simple, unambiguous, and unmistakable.9 Jury
    confusion was therefore unlikely.
    It is also unlikely that the prosecution’s misstatements of
    the law confused the jury about the elements of the charged
    offense. The prosecution did, on multiple occasions, clearly
    and directly state that importation was required to support a
    conviction. In closing, the prosecutor also correctly stated:
    You don’t have to write this down, two
    elements. Defendant knew she brought
    marijuana from a place outside into a place
    inside the United States and second, she knew
    the substance she was bringing into the United
    States was marijuana or some other prohibited
    drug. Basically, the United States has to
    prove to you or has proven to you beyond a
    reasonable doubt that Ms. Flores [acted]
    knowingly—she wasn’t dragged over the
    border, nobody dragged her over the border.
    She voluntarily drove her car from Mexico
    into the United States.
    9
    The prosecutor asked Flores: “[O]n the day of your arrest, you were
    bringing marijuana between the United States and Mexico?” Flores
    responded: “Into Mexico.” The prosecutor then asked: “[Y]ou definitely
    brought drugs between the United States and Mexico?” Flores again
    responded: “Not between. Into Mexico.”
    UNITED STATES V. FLORES                           15
    During closing, the prosecutor argued at least sixteen times
    that Flores brought drugs into the United States.10 In other
    words, the government built its entire argument around a
    correct statement of a very simple law and repeatedly
    informed the jury in which direction Flores had to carry drugs
    to be found guilty. Accordingly, it is unlikely that a rational
    jury would have concluded, based on a few misstatements of
    the law, that it could convict Flores regardless of which
    direction she carried drugs.
    Further, the evidence against Flores was overwhelming.
    See Berry, 
    627 F.2d at 201
    . Flores was found with more than
    36 pounds of drugs in her car. The government explained
    various ways in which Flores would have become aware that
    her car was loaded with marijuana. Flores acted suspiciously
    at the border, drawing Officer Brown’s attention to the drugs.
    10
    The prosecutor said: “she brought drugs in;” “[s]he was completely
    surrounded by marijuana and coming into the United States;” “[s]he knew
    she had smuggled drugs into the United States;” “[d]efendant knew she
    brought marijuana from a place outside into a place inside the United
    States;” “[w]e also have proven to you beyond a reasonable doubt she
    knew there were drugs in her car [as she was entering the United States;]”
    “[s]he was carrying and bringing marijuana from Mexico into the United
    States in her car;” “[y]ou know the direction she was smuggling those
    drugs. She was smuggling them from Mexico into the United States;”
    “[s]he was nervous . . . because she was surrounded by marijuana she was
    smuggling into the United States;” “[s]he did what anyone would do when
    they are nervous because of smuggling drugs into the United States;”
    “[s]he knew she was smuggling[] drugs into the United States;” “[she was]
    arrested . . . after smuggling[] drugs into the United States;” “[she was]
    hire[d] to bring the drugs into the United States;” “[s]he knew she
    smuggled drugs into the United States;” “[s]he was ashamed . . . in that
    jail call because she knew she smuggled drugs into the United States;”
    “[she] smuggled drugs into the United States;” “[s]he is a drug smuggler
    who had someone put [the drugs] in [her car] for her so she could bring
    drugs into the United States.”
    16                   UNITED STATES V. FLORES
    In a recorded phone call from jail played for the jury, Flores
    expressed regret, not frustration or confusion, as one would
    expect if Juan had planted the drugs in Flores’s car without
    her knowledge.11 She further implicated herself by asking
    Jose Manuel to destroy evidence from Facebook—evidence
    that was apparently so incriminating that Flores asked
    someone to delete it even though she knew her call was being
    recorded.12
    Flores’s story about Juan the mechanic—the only
    innocent explanation for the drugs found in Flores’s car—was
    entirely uncorroborated and highly suspect, as the
    government pointed out to the jury. Flores mentioned her
    visit to the dermatologist to Officer Brown at the border, and
    presented a host of evidence at trial to corroborate that aspect
    of her trip to Mexico.13 Yet she failed to mention her
    interaction with Juan to Officer Brown at the border and
    offered no evidence to prove that Juan did any repair work on
    11
    In this call, Flores said to her boyfriend: “If you keep fucking around,
    that’s not proving anything to me. Do you want to be with me? Do you
    want to change? I fucking stepped foot in here and I asked myself, what
    the fuck? Why would I do this to my family? . . . I’m not going to fucking
    set foot in here again.”
    12
    In this call, Flores asked Manuel, her cousin, to login to Flores’s
    Facebook account, change the password, and “take off whatever you feel
    needs to be taken off.” Flores also warned Manuel that the call was being
    recorded.
    13
    Flores identified her dermatologist as Dr. Juan R. Martinez Najera,
    produced a picture of his office, and introduced prescriptions written by
    Dr. Martinez for Flores on June 21, 2012.
    UNITED STATES V. FLORES                             17
    her car, or that he even existed.14 The government’s expert
    also testified that the air conditioner in Flores’s car was not
    working in June of 2012, obviously suggesting that it had not
    been repaired by Juan in Tijuana.15 Further, Flores’s cousin
    in Tijuana, whom Flores visited on the day of her arrest, was
    supposedly friends with Juan and presumably could have
    provided details about Juan to corroborate Flores’s testimony.
    No such evidence was presented. Nor did Flores attempt to
    explain why she had not taken even basic steps to locate Juan
    or corroborate her story after having gone to such lengths to
    confirm her trip to the dermatologist. All of these facts are
    inconsistent with Flores’s story that Juan the mechanic
    planted drugs in Flores’s car without her knowledge, and no
    other innocent explanation was offered for how they got
    there. Flores is correct that the evidence of her knowledge
    was circumstantial, but that circumstantial evidence was
    overwhelming.16
    14
    Flores did not provide a last name, phone number, address, or business
    name for Juan the mechanic. Unlike the dermatologist, she did not call
    Juan in advance to arrange for the repair work to be done on her car.
    Flores testified that she paid Juan $40, but she did not have a receipt for
    any repair work done by Juan in Tijuana. She did, however, have multiple
    invoices from an auto body shop located in Garden Grove, California.
    15
    The government’s expert explained that the compressor in Flores’s
    car—an essential component of an air conditioning system—was
    inoperable when he inspected it. He further explained that if the
    compressor had been functional when Flores’s car was impounded, it
    would have remained functional through the date of the inspection, as
    compressors do not “fail from just sitting” in an impound lot.
    16
    In evaluating the strength of the evidence against her, Flores notes that
    the jury in her first trial could not reach a unanimous verdict. But a jury’s
    inability to reach a verdict could be attributed to many factors other than
    the closeness of the evidence. That is particularly so in cases, like this,
    18                   UNITED STATES V. FLORES
    Further mitigating the risk of prejudice, jury instructions
    correctly stating the law were read shortly after closing
    arguments, and thus shortly after the government’s key
    misstatements. As to the elements of the charge, the district
    court correctly instructed:
    In order for the defendant to be found guilty
    . . . , the government must prove each of the
    following elements beyond a reasonable
    doubt:
    First, the defendant knowingly brought
    marijuana into the United States from a place
    outside the United States; and
    Second, the defendant knew the substance she
    was bringing into the United States was
    marijuana . . . .
    This instruction mirrored the prosecution’s earlier correct
    statement of the law and again made the importance of
    importation abundantly clear. The instructions also reiterated
    that “the defendant is charged in the indictment with unlawful
    importation of a controlled substance.” If the jury was at all
    misled by the prosecution’s statements, which is doubtful, the
    where the defendant seems sympathetic and lacked the wherewithal to act
    alone given the drug quantity and means of transport, and the charge
    involves a substance that has been legalized in some states. Because we
    can only speculate about why the jury hung at the first trial, we place little
    weight on the first jury’s inability to reach a verdict. In evaluating the
    strength of the evidence, we look first and foremost to the evidence itself,
    rather than to the first jury’s reaction to that evidence. For the same
    reason, we place little stock in the fact that the second jury returned a
    guilty verdict shortly after deliberations began.
    UNITED STATES V. FLORES                     19
    court’s instructions very likely put the jury back on course.
    We presume the jury followed these instructions when
    determining whether Flores was guilty as charged. See Weeks
    v. Angelone, 
    528 U.S. 225
    , 234 (2000).
    In sum, while the government misrepresented Flores’s
    testimony and misstated the law on multiple occasions, in the
    context of the trial as a whole, it is unlikely that the jury was
    misled about the law or the facts. See Berry, 
    627 F.2d at 200
    .
    The evidence against Flores was overwhelming, see 
    id. at 201
    , and the jury was correctly instructed. Accordingly,
    Flores cannot show that the government’s misconduct rose to
    the level of plain error. See Sanchez, 
    659 F.3d at 1257
    .
    B. Vouching
    “Improper vouching consists of placing the prestige of the
    government behind a witness through personal assurances of
    the witness’s veracity, or suggesting that information not
    presented to the jury supports the witness’s testimony.” Ruiz,
    710 F.3d at 1085. The government concedes that it
    improperly vouched for its automotive expert witness, Russ
    Butler, when the prosecutor stated, “I submit I would hire
    Russ Butler to work on my car rather than Forrest Folck
    [Flores’s expert]. Russ is experienced.” See United States v.
    Kerr, 
    981 F.2d 1050
    , 1053 (9th Cir. 1992). But see Kojayan,
    
    8 F.3d at 1321
     (explaining that the phrase “I submit” signaled
    a request for the jury to draw a reasonable inference). Flores
    did not object to this misconduct at trial, so we review for
    20                 UNITED STATES V. FLORES
    plain error.17 See Ruiz, 710 F.3d at 1082. To determine
    whether vouching caused substantial prejudice, we consider:
    the form of vouching; how much the vouching
    implies that the prosecutor has extra-record
    knowledge of or the capacity to monitor the
    witness’s truthfulness; any inference that the
    court is monitoring the witness’s veracity; the
    degree of personal opinion asserted; the
    timing of the vouching; the extent to which
    the witness’s credibility was attacked; the
    specificity and timing of a curative
    instruction; the importance of the witness’s
    testimony and the vouching to the case
    overall.
    Id. at 1085; see also United States v. Williams, 
    989 F.2d 1061
    , 1072 (9th Cir. 1993). Considering these factors, we
    conclude that the government’s vouching did not
    substantially prejudice Flores.
    Unlike in cases where we have found vouching
    prejudicial, the vouching here was not crucial to the
    government’s case. See Kerr 
    981 F.2d at
    1052–54 (citing
    multiple instances of vouching and explaining that the
    testimony of the vouched-for witnesses was crucial to the
    government’s case). Even if the jury believed the defense
    expert’s testimony that Flores’s air conditioner was working
    on June 21, 2012, this would do little to bolster Flores’s story
    about Juan the mechanic. That an air conditioner works on a
    17
    The government does not rely on Kojayan and concedes error. We
    assume without deciding that the error was clear or obvious for purposes
    of our plain error analysis.
    UNITED STATES V. FLORES                    21
    particular day says nothing about who fixed it, where it was
    fixed, or whether it was broken in the first place.
    Moreover, the attack on Folck’s credibility was minimal
    and involved a single improper statement. See United States
    v. Younger, 
    398 F.3d 1179
    , 1190 (9th Cir. 2005) (holding that
    a single improper statement did not materially affect the
    verdict). Nor did the vouching imply extra-record knowledge
    or the ability to monitor the witness’s truthfulness. See Ruiz,
    710 F.3d at 1085. And the vouching did not function as a
    government-backed assurance of Flores’s guilt. At worst, the
    vouching simply reiterated the primary inference the
    government asked the jury to draw all along—that Flores’s
    story about Juan the mechanic was not credible. See
    Williams, 
    989 F.2d at 1072
     (“[V]ouching here functioned
    mainly as rhetorical emphasis for the inferences the
    prosecutor was urging the jury to draw rather than a
    meaningful personal assurance that the defendants were
    guilty.”).
    Because of the “substantial evidence supporting the jury’s
    verdict” and the minor role vouching played in the
    prosecutor’s case, 
    id.,
     Flores fails to show that the vouching
    caused “substantial prejudice,” Ruiz, 710 F.3d at 1084–85.
    C. Shifting and Undermining the Burden of Proof
    Flores next contends that the government improperly
    (1) shifted the burden of proof by pointing out that she failed
    to produce evidence to corroborate her story about Juan the
    mechanic and (2) undermined the burden of proof by asking
    the jury to evaluate the government’s “very reasonable” story
    and Flores’s “preposterous” story “in the same way.” See
    United States v. Evanston, 
    651 F.3d 1080
    , 1091–92 (9th Cir.
    22                   UNITED STATES V. FLORES
    2011) (“It is beyond comment that the government bears the
    burden of proving the defendant’s guilt beyond a reasonable
    doubt at trial.”). These statements were not improper.
    While Flores is correct that the government referred to its
    theory as “very reasonable” and Flores’s defense as “crazy”
    and “preposterous,” the government never argued that these
    conclusions, or Flores’s failure to corroborate her story about
    Juan, alone were sufficient to support a conviction. And the
    government explicitly stated more than a half dozen times
    that it bore the burden of proving Flores guilty beyond a
    reasonable doubt. Highlighting the weakness of a defense,
    characterizing it as incredible, and noting the defendant’s
    failure to produce evidence is not improper, particularly
    where the government correctly states the burden of proof.
    See Ruiz, 710 F.3d at 1086–87 (referring to the defense as
    “smoke and mirrors” is permissible); United States v. Tucker,
    
    641 F.3d 1110
    , 1120–21 (9th Cir. 2011) (highlighting flaws
    in the defense is permissible); United States v. Necoechea,
    
    986 F.2d 1273
    , 1282 (9th Cir. 1993) (noting the defense’s
    failure to present evidence in support of its theory is
    permissible); Molina, 
    934 F.2d at 1445
     (arguing that the
    defendant is a liar is permissible).
    D. The Government’s Statements about Flores
    Because Flores testified, the prosecutor’s comments on
    her demeanor were permissible.18 See Allen v. Woodford,
    
    395 F.3d 979
    , 997 (9th Cir. 2005) (“The prosecutor’s
    comments regarding [the defendant’s] courtroom demeanor
    were permissible because [the defendant] chose to testify.”);
    18
    In closing, the prosecutor said to the jury: “You saw her sitting there
    the entire trial. Her hands weren’t shaking while she was there.”
    UNITED STATES V. FLORES                    23
    United States v. Schuler, 
    813 F.2d 978
    , 981 n.3 (9th Cir.
    1987).
    Flores also argues that the government impermissibly
    called Flores a drug smuggler, a liar, and “not law abiding.”
    However, when the prosecutor called Flores a drug smuggler
    and a liar, she was not making impermissible propensity
    arguments. Instead, she was arguing that when Flores
    admitted to smuggling drugs on June 21, 2012, she admitted
    to the instant offense and that she was lying when she
    claimed she only took drugs to Mexico. Such statements are
    permissible to the extent that they were not misstatements of
    fact or law. See Molina, 
    934 F.2d at 1445
     (holding that the
    prosecution may call the defendant a liar if that is one of the
    inferences supported by the evidence); Sayetsitty, 
    107 F.3d at 1409
     (holding that the prosecution may ask the jury to draw
    reasonable inferences); Necoechea, 
    986 F.2d at 1282
     (noting
    that the government may argue that a defendant charged with
    drug dealing is a “dope dealer”).
    And the prosecutor’s assertion that Flores was not law-
    abiding was a permissible rebuttal to Flores’s closing
    argument. Flores’s attorney attempted to explain why
    Flores’s effort to delete her Facebook messages was not
    necessarily a sign of guilt. Defense counsel told the jury a
    childhood story in which he attempted to hide evidence
    potentially suggesting that he cheated on a test even though
    he had not actually cheated. The prosecutor’s argument that
    Flores was not law-abiding was offered to distinguish the
    defense attorney’s situation from Flores’s. Flores admitted
    that she asked Manuel to delete content because she feared
    there was a picture of her smoking marijuana. While the
    evidence Flores’s attorney destroyed as a child was entirely
    innocent (and might have exonerated him), the evidence
    24               UNITED STATES V. FLORES
    Flores asked her cousin to destroy was undoubtedly indicative
    of criminal activity—the only question was which crime
    Flores was trying to cover up, simple possession, exportation,
    or importation. The government merely pointed out that,
    unlike her attorney, Flores was trying to hide evidence of
    wrongdoing. Placed in this context, the argument was proper
    rebuttal.
    E. Cumulative Error
    Flores contends that, because the prosecution committed
    multiple errors, we should not conduct “a balkanized, issue-
    by-issue harmless error review.” United States v. Frederick,
    
    78 F.3d 1370
    , 1381 (9th Cir. 1996). We agree that we must
    consider the cumulative effect of the errors, if any. However,
    Flores did not object to any of the prosecution’s conduct that
    we find improper, so we review for plain error, not harmless
    error as Flores suggests.
    In the context of the trial as a whole, the jury was unlikely
    to misunderstand Flores’s testimony or the law, and it is
    unlikely that the jury’s deliberations were affected by the
    prosecutor’s submission that she would hire Russ Butler
    rather than Forrest Folck. Considering the errors together
    does nothing to change these conclusions. Adding to Butler’s
    credibility would not have increased the likelihood that the
    jury misunderstood the law or Flores’s testimony, just as
    misunderstanding the law or Flores’s testimony would not
    have altered the jury’s assessment of the experts’ credibility.
    The likelihood that the errors affected the jurors’
    deliberations was simply too low to constitute plain error.
    Further, because the evidence against Flores was
    overwhelming, she was less likely prejudiced by the effect of
    cumulative errors. See United States v. Wallace, 848 F.2d
    UNITED STATES V. FLORES                    25
    1464, 1475–76 (9th Cir. 1988). Thus, whether viewed
    individually or cumulatively, the prosecution’s improper
    statements do not warrant reversal.
    III. EVIDENTIARY CLAIMS
    Flores argues that the district court erred in denying her
    motion to suppress evidence obtained from her Facebook
    account. She further argues that the district court abused its
    discretion by admitting evidence of her personal drug use at
    trial. We disagree.
    A. Denial of Flores’s Motion to Suppress Facebook
    Evidence
    We review the denial of a motion to suppress de novo and
    the district court’s findings of fact for clear error. United
    States v. Camacho, 
    368 F.3d 1182
    , 1183 (9th Cir. 2004).
    Flores contends that the district court erred because (1) the
    warrant to search her Facebook account was not supported by
    probable cause and was stale; (2) the warrant was overbroad;
    and (3) the search exceeded the scope of the warrant. We
    reject each argument in turn.
    1. Probable Cause and Staleness
    Probable cause is established if an affidavit presents a
    “fair probability” that evidence of criminal activity will be
    found in the place to be searched. Illinois v. Gates, 
    462 U.S. 213
    , 238 (1983). We “give[] ‘great deference’ to an issuing
    judge’s finding that probable cause supports the warrant” and
    review for clear error. United States v. Grant, 
    682 F.3d 827
    ,
    832 (9th Cir. 2012). We will not find a search warrant invalid
    so long as the issuing judge had a substantial basis for
    26               UNITED STATES V. FLORES
    concluding that the supporting affidavit established probable
    cause. United States v. Crews, 
    502 F.3d 1130
    , 1135 (9th Cir.
    2007).
    Special Agent Enriquez’s affidavit supporting the warrant
    established probable cause to search Flores’s Facebook
    account, at least for some period of time, considering Flores
    called Jose Manuel from jail and asked him to purge her
    account. That request, along with Flores’s warning that the
    call was being recorded and the close proximity of the call to
    her arrest, supported more than a “fair probability” that
    agents would find evidence of drug smuggling or a smuggling
    conspiracy in Flores’s account. 
    Id.
    Flores argues, however, that even if there was probable
    cause on June 21, 2012, after she called Manuel, there was no
    longer probable cause when the warrant issued more than
    three months later, on October 2, 2012. See Grant, 682 F.3d
    at 835 (explaining that an otherwise sufficient warrant
    application may become stale absent “a continuing pattern or
    other good reasons” suggesting that evidence remains in the
    location to be searched); United States v. Gann, 
    732 F.2d 714
    ,
    722 (9th Cir. 1984). Contrary to Flores’s argument, there are
    many reasons to believe that there remained a “fair
    probability” of finding evidence of drug smuggling in her
    account when the warrant issued.
    The mere passage “of substantial amounts of time is not
    controlling in a question of staleness.” United States v.
    Dozier, 
    844 F.2d 701
    , 707 (9th Cir. 1988). That is
    particularly true with electronic evidence. “Thanks to the
    long memory of computers, any evidence of a crime was
    almost certainly still on [the defendant’s] computer, even if he
    had tried to delete the images.” United States v. Gourde, 440
    UNITED STATES V. FLORES                              
    27 F.3d 1065
    , 1071 (9th Cir. 2006) (en banc) (emphasis added).
    Because any evidence that might have been in Flores’s
    account on June 21, 2012 may not have been deleted and
    likely could have been recovered even if it had been deleted,
    there remained a fair probability that Flores’s account would
    contain evidence of drug smuggling on October 2, 2012.
    Flores counters by noting that the government sought to
    file the warrant under seal precisely because anyone with
    even basic computer skills could permanently delete
    Facebook content. This argument disregards the fact that, on
    August 27, 2012, Special Agent Enriquez submitted a
    preservation request to Facebook for Flores’s account,19
    which proved effective.20 Further, asserting that there is a
    genuine risk that evidence might be permanently deleted in
    the future, as Enriquez did in support of his request to seal the
    warrant, is not the same as conceding that there is no longer
    a fair probability that the evidence still exists (or is
    recoverable). See Gourde, 440 F.3d at 1065, 1071. Probable
    cause determinations are “commonsense, practical”
    questions, and a “fair probability” is less even than a
    preponderance of the evidence. Id. at 1069. In this day and
    age, even persons with minimal technological savvy are
    19
    Agent Enriquez did not mention the preservation request in his
    affidavit. He did, however, refer to “recovered data,” and he mentioned
    that it was “very likely . . . that evidence of the crimes under investigation
    exists on computers subject to the control of” Facebook.
    20
    In addition to the preservation request and the inherent difficulty of
    irretrievably deleting digital data, a Facebook security setting also ensured
    that the contents of Flores’s account remained accessible. Anyone logging
    in to Flores’s account from an unknown computer had to enter a password
    that was sent to Flores’s cell phone. Flores’s phone had been confiscated,
    so Manuel was unable to login to Flores’s account.
    28               UNITED STATES V. FLORES
    aware that data is frequently preserved and recovered after
    deletion from an electronic device, particularly when a third
    party like Facebook is involved. See id. at 1071. Therefore,
    even if agents were less likely to find evidence of drug
    smuggling in Flores’s account in October than in June, a fair
    probability of finding such evidence remained when the
    warrant issued.
    2. Overbreadth
    Flores next argues that the warrant was overbroad. We
    consider three factors in analyzing the breadth of a warrant:
    (1) whether probable cause existed to seize all
    items of a category described in the warrant;
    (2) whether the warrant set forth objective
    standards by which executing officers could
    differentiate items subject to seizure from
    those which were not; and (3) whether the
    government could have described the items
    more particularly in light of the information
    available . . . .
    United States v. Lei Shi, 
    525 F.3d 709
    , 731–32 (9th Cir.
    2008).
    The first two factors clearly suggest that the warrant was
    not overbroad. The warrant allowed the government to
    search only the Facebook account associated with Flores’s
    name and email address, and authorized the government to
    seize only evidence of violations of 
    18 U.S.C. § 371
    (Conspiracy) and 
    21 U.S.C. §§ 952
     and 960 (Importation of
    UNITED STATES V. FLORES                            29
    a Controlled Substance).21 The warrant also established
    “Procedures For Electronically Stored Information,”
    providing executing officers with sufficient “objective
    standards” for segregating responsive material from the rest
    of Flores’s account. See Lei Shi, 
    525 F.3d at
    731–32.
    Citing United States v. Comprehensive Drug Testing, Inc.,
    
    621 F.3d 1162
     (9th Cir. 2010) (en banc) (per curiam)
    (“CDT”), Flores argues that the objective standards used here
    were unconstitutional. At bottom, Flores complains that the
    government, including the investigative team itself, was
    authorized to seize and search all 11,000 pages of data in
    Flores’s account when, as it turned out, only approximately
    100 pages were truly responsive to the warrant. In United
    States v. Adjani, we rejected a similar argument that the
    government should have narrowed its search of a defendant’s
    e-mail account. See 
    452 F.3d 1140
    , 1149–50 (9th Cir. 2006)
    (“To require such a pinpointed computer search, restricting
    the search to an email program or to specific search terms,
    would likely have failed to cast a sufficiently wide net to
    capture the evidence sought.”). “Over-seizing” is an accepted
    reality in electronic searching because “[t]here is no way to
    be sure exactly what an electronic file contains without
    somehow examining its contents.” CDT, 
    621 F.3d at 1176, 1177
    .
    That said, we have recognized a number of significant
    limitations to prevent necessary “over-seizing” from turning
    into a general dragnet. In Adjani, we explained that warrants
    21
    Flores argues that the warrant authorized agents to search for and seize
    evidence tending to prove a conspiracy to commit any crime. She
    misreads the warrant, which extended only to content “tending to show
    narcotics trafficking.”
    30                  UNITED STATES V. FLORES
    must specify the particular crime for which evidence is
    sought. 
    452 F.3d at
    1148–50. We also cautioned in CDT
    against retaining unresponsive data based on the “plain view”
    doctrine, and recognized the importance of protecting third
    parties’ rights. 
    621 F.3d at
    1169–71. Consistent with this
    guidance, the warrant here specified a crime and a suspect,
    the seized data was not used for any broader investigative
    purposes, and Facebook, rather than government agents,
    segregated Flores’s account to protect third parties’ rights.22
    Flores claims that the third Lei Shi factor—whether the
    government could have placed greater limits on the warrant’s
    scope in light of available information, 
    525 F.3d at
    732—cuts
    in favor of finding the warrant overbroad. In particular, she
    notes the warrant contained no temporal limit. As it turns
    out, Flores’s Facebook account contained activity dating back
    to when she was 17 or 18 years old, and she committed the
    22
    We recognize that the warrant authorized retention of Flores’s full
    account for authentication purposes, a process we disapproved in United
    States v. Tamura, 
    694 F.2d 591
    , 597 (9th Cir. 1982). Tamura presented
    very different concerns, however, because the documents retained in that
    case were a company’s physical “master volumes” rather than a copy of
    digital data. Nevertheless, CDT reaffirmed the importance of returning (or
    destroying) copies of digital data. See 
    621 F.3d at 1170
    ; 
    id. at 1179
    (Kozinski, C.J., concurring). But CDT allowed for retention with
    “specific judicial authorization,” which the warrant here included. See 
    id.
    We also note that “any authorized federal agent” was allowed to search
    within Flores’s account for responsive data. Ideally, the government’s
    investigative team would not have been involved in segregating
    responsive data from the rest of Flores’s account. See 
    id. at 1168, 1172
    (Majority Op.). CDT did not prohibit investigative teams from
    participating in data segregation as a general matter, however, and instead
    faulted the government for misleadingly suggesting in the warrant that the
    team would not be involved. 
    Id. at 1172
    . CDT thus serves as a reminder
    not to mislead magistrates or exceed the scope of a warrant, not as a
    blanket prohibition on data segregation by investigative teams.
    UNITED STATES V. FLORES                            31
    offense of conviction shortly after turning 23 years old.23
    Seizing five or six years’ worth of data may have been
    excessive, though Agent Enriquez’s affidavit certainly
    established probable cause to search Flores’s account for
    some time before her arrest.
    Ultimately, we need not decide whether the warrant was
    overbroad for lack of a temporal limit because even if it was,
    suppression of the evidence used at trial was not required.
    We have “embraced the doctrine of severance, which allows
    us to strike from a warrant those portions that are invalid and
    preserve those portions that satisfy the Fourth Amendment.
    Only those articles seized pursuant to the invalid portions
    need be suppressed.” United States v. Gomez-Soto, 
    723 F.2d 649
    , 654 (9th Cir. 1984). No evidence was introduced at trial
    that should have been suppressed under this standard,
    regardless of the warrant’s potential overbreadth. Indeed, the
    two sets of Facebook messages introduced at trial were sent
    on the day of Flores’s arrest and thus fell well-within even the
    narrowest of temporal limits. Therefore, even though the
    warrant had no temporal limit, the district court did not err in
    denying Flores’s motion to suppress. See Gomez-Soto,
    723 F.2d at 654.24
    23
    In her motion in limine, Flores exaggerated the scope of the problem.
    She claimed that the government seized data from as early as 2000. Flores
    testified, however, that she joined Facebook when she was 17 or 18 years
    old, which means that no data existed prior to 2006 or 2007, given that
    Flores was born in 1989.
    24
    Because we conclude that the evidence used at trial was seized
    pursuant to the valid portion of the warrant and that the motion to suppress
    was therefore properly denied, we need not address the government’s
    additional argument that the “good faith” exception to the exclusionary
    rule applies.
    32                   UNITED STATES V. FLORES
    3. Executing the Warrant
    Flores further argues that the Facebook evidence
    presented at trial should have been suppressed because the
    government exceeded its scope by seizing all 11,000 pages of
    data in Flores’s account. Pursuant to the terms of the warrant,
    however, Facebook was authorized to provide agents with a
    copy of the entire contents of Flores’s account. Agents then
    segregated 100 pages of responsive material from the entire
    account into a separate file within the 90-day period
    authorized by the warrant.25 Again pursuant to the warrant,
    the original copy of Flores’s account was sealed in an
    evidence bag and is inaccessible absent a new warrant.26 In
    short, the government executed the warrant exactly as it was
    written.
    We need not determine whether the 100 pages of
    segregated data exceeded the scope of the warrant, as Flores
    claims, because only two messages were admitted into
    evidence. In United States v. Crozier, we held that “[o]nly
    those items which fall outside the scope of the warrant need
    be suppressed.” 
    777 F.2d 1376
    , 1381 (9th Cir. 1985).
    Accordingly, the district court properly considered only the
    25
    Flores also claims that the government exceeded the scope of the
    warrant by refusing to enlist Facebook in this data segregation. Flores’s
    claim fails because the warrant explicitly authorized the government to
    perform this task and because the affidavit thoroughly explained why
    Facebook could not be assigned to find responsive materials in Flores’s
    account. See CDT, 
    621 F.3d at
    1170–71; Tamura, 
    694 F.2d at 595
    .
    26
    In addition to the sealed copy retained for authentication purposes, the
    government made three working copies of Flores’s account and gave one
    copy to the defense, one to the prosecution, and one to the case agent. The
    latter two copies have been destroyed.
    UNITED STATES V. FLORES                     33
    Facebook messages the government planned to introduce at
    trial. Those messages were well-within the scope of the
    warrant. Thus, even if other evidence that was not introduced
    at trial might have exceeded the warrant’s scope—and there
    is no reason to believe that it did—the district court did not
    err in denying Flores’s motion to suppress.
    B. Admissibility of Evidence from Facebook
    After the district court denied Flores’s motion to suppress,
    Flores moved in limine to exclude any evidence referring to
    her personal drug use, arguing that references to personal
    drug use were inadmissible propensity evidence under
    Federal Rule of Evidence 404(b) and unfairly prejudicial
    under Rule 403. The district court denied her motion and
    overruled her Rule 403 and 404 objections at trial. We
    review the denial of Flores’s motion and the rejection of her
    objections for abuse of discretion. See United States v.
    Curtin, 
    489 F.3d 935
    , 943 (9th Cir. 2007) (en banc).
    Flores contends that the two Facebook messages the
    government introduced were improperly used for propensity
    purposes and were unfairly prejudicial—concerns which were
    improperly compounded by the admission of evidence that
    Flores also used marijuana during her pretrial release period.
    Flores is correct that drug use and simple possession cannot
    be introduced to show that a defendant conspired to smuggle
    drugs. See United States v. Vizcarra-Martinez, 
    66 F.3d 1006
    ,
    1015 (9th Cir. 1995) (noting that possession of personal use
    amounts of a drug does not evidence conspiracy to
    manufacture that drug); United States v. Mehrmanesh,
    
    689 F.2d 822
    , 831–32 (9th Cir. 1982) (rejecting the argument
    that a jury can infer importation from drug use). She is
    incorrect that the evidence was inadmissible, however,
    34                UNITED STATES V. FLORES
    because the government used the evidence for different,
    permissible purposes.
    The evidence supported a reasonable inference that the
    Facebook messages referred to the very drugs Flores was
    arrested for transporting. Thus, the messages were at least
    arguably tantamount to admissions to the crime charged.
    Accordingly, Rule 404(b) is inapplicable because the
    evidence did not refer to other bad acts at all; it referred to the
    bad act at issue. See United States v. Rizk, 
    660 F.3d 1125
    ,
    1131 (9th Cir. 2011). Indeed, it would have been illogical for
    the government to use the messages for propensity purposes,
    as that would have bolstered Flores’s claim that the messages
    referred to other uncharged bad acts, whereas the
    government’s argument depended in part on convincing the
    jury that the messages referred to the importation with which
    Flores was charged. Thus, the district court’s decision to
    admit the evidence as a potential admission was not an abuse
    of discretion because the government’s characterization of the
    messages was supported by “inferences that may be drawn
    from facts in the record.” Redlightning, 624 F.3d at 1110.
    That Flores presented a competing plausible characterization
    of the Facebook messages goes to the weight of the evidence,
    not its admissibility. Nor did the district court abuse its
    discretion under Rule 403 because the prejudice created by an
    admission, while severe, is not unfair. See United States v.
    Hankey, 
    203 F.3d 1160
    , 1172 (9th Cir. 2000).
    Allowing the government to use the messages for non-
    propensity impeachment purposes—i.e., to show that Flores
    was lying about what she wanted her cousin to delete from
    Facebook—was not an abuse of discretion. The same is true
    of the government’s reference to Flores’s pre-trial drug use,
    which was introduced to show that Flores had lied to a federal
    UNITED STATES V. FLORES                    35
    judge and thus was untrustworthy, rather than to show
    Flores’s propensity to commit drug crimes. Moreover, the
    court explicitly instructed the jury that it could not consider
    evidence of Flores’s other wrongful acts “as evidence of guilt
    of the crime for which the defendant is now on trial.”
    Because the evidence was used for permissible purposes only,
    the district court did not abuse its discretion in denying
    Flores’s motion in limine or overruling her objections. See
    United States v. Castillo, 
    181 F.3d 1129
    , 1134 (9th Cir. 1999)
    (“[U]nless the evidence of other acts only tends to prove
    propensity, it is admissible.”).
    IV. SENTENCING
    We review a district court’s construction and
    interpretation of the Sentencing Guidelines de novo, its
    factual findings for clear error, and its application of the
    Guidelines to the facts for abuse of discretion. United States
    v. Taylor, 
    749 F.3d 842
    , 845 (9th Cir. 2014); United States v.
    Popov, 
    742 F.3d 911
    , 914 (9th Cir. 2014). Flores argues that
    the district court procedurally erred by applying a 2-level
    obstruction of justice enhancement under U.S.S.G. § 3C1.1
    without making the requisite willfulness and materiality
    findings. See U.S.S.G. § 3C1.1 cmt. 4(D). We disagree.
    Flores is correct that the enhancement can be based only
    on willful efforts to delete evidence that are material to “the
    instant offense of conviction,” U.S.S.G. § 3C1.1 (emphasis
    added)—importation of marijuana. See United States v.
    Gardner, 
    988 F.2d 82
    , 83 (9th Cir. 1993) (per curiam).
    Contrary to Flores’s claim, however, the district court found
    Flores asked her cousin to delete Facebook content that, “if
    believed, would tend to influence or affect” the importation
    charge itself.     U.S.S.G. § 3C1.1 cmt. n.6 (defining
    36                   UNITED STATES V. FLORES
    materiality).    Indeed, the district court allowed the
    government to introduce this evidence at trial over Flores’s
    objections precisely because the court concluded that, if the
    jury believed the government’s characterization of the
    evidence, it would directly prove Flores knew there was
    marijuana in her car as she entered the United States. The
    court’s evidentiary ruling therefore encompasses the requisite
    materiality finding. Cf. United States v. Armstrong, 
    620 F.3d 1172
    , 1176 (9th Cir. 2010) (“Although it is preferable for the
    court to make a separate and clear finding . . . , doing so is
    unnecessary where the court makes a determination of an
    obstruction of justice enhancement that encompasses all of
    the factual predicates for [such] a finding . . . .”).
    Flores also asserted at sentencing that she asked Manuel
    to delete Facebook content because “[s]he didn’t want the
    prosecutors to assume that she had knowledge [of the drugs
    in her car] simply because she herself had smoked marijuana
    in the past.”27 Thus, Flores affirmatively stated at sentencing
    27
    Flores had stated this fear earlier in her testimony, as well. When
    asked why she wanted Manuel to delete references to her marijuana use
    from Facebook, Flores said, “For however long I had been smoking,
    people they just pass judgment immediately. I don’t know, I guess they
    think badly of somebody who smokes marijuana . . . . I knew that that
    was something I could get in trouble for.” On cross-examination, she
    confirmed that she wanted the evidence deleted because of “the judgment
    that people pass on anyone who smokes marijuana,” and because “I didn’t
    want it to be used as evidence in [a] case it was irrelevant to.” Essentially,
    Flores was worried that evidence of her marijuana use might (1) support
    a character inference that in turn would cause the government to prosecute
    (and the jury to convict) her for importation, and (2) suggest that she knew
    that drugs were hidden in her car as she entered the United States. While
    Flores’s concerns might warrant exclusion of this evidence in an
    importation case under Federal Rules of Evidence 404(b) and 403, a
    defendant cannot avoid an obstruction enhancement by claiming that the
    UNITED STATES V. FLORES                           37
    that she attempted to delete content from Facebook for the
    purpose of hindering the investigation and prosecution of “the
    instant offense of conviction.” U.S.S.G. § 3C1.1; see
    Gardner, 
    988 F.2d at
    83–84 (“[A] section 3C1.1 enhancement
    must be premised on willful conduct that has the purpose of
    obstructing justice.”). Accordingly, the district court’s
    imposition of the enhancement based on Flores’s “efforts to
    have her cousin delete certain postings from her Facebook
    account” and “for the reasons stated,” was a finding of the
    essential elements of obstruction under § 3C1.1. Gardner,
    
    988 F.2d at
    83–84 (“[T]he district court need not specify the
    reasons for its factual finding of obstruction of justice.”).
    Flores’s own testimony establishes that this factual
    finding—that Flores asked Manuel to delete content from
    Facebook for the purpose of eliminating evidence that might
    tend to prove the crime charged—was not clearly erroneous.
    Therefore, we affirm her sentence.
    V. CONCLUSION
    Once again, an Assistant United States Attorney for the
    Southern District of California overstepped the boundaries of
    permissible questioning and argument. We reluctantly affirm
    evidence she tried to destroy might have been inadmissible—that is not a
    defendant’s decision to make. Obstruction enhancements are not reserved
    for the willful destruction of admissible evidence only, and in any event,
    the evidence Flores attempted to destroy was admissible for non-
    propensity purposes. More importantly, Flores’s testimony confirms that
    when she asked Manuel to delete content from Facebook, she knew it
    could be used against her in a prosecution for importation, and she
    attempted to destroy it for that reason.
    38                UNITED STATES V. FLORES
    Flores’s conviction under the high bar of the plain error
    standard.
    AFFIRMED.
    PREGERSON, Circuit Judge, dissenting:
    I respectfully dissent. The Assistant U.S. Attorney
    violated the rules of permissible questioning and argument;
    forgot that our government’s interest “in a criminal
    prosecution is not that it shall win . . . , but that justice shall
    be done,” Berger v. United States, 
    295 U.S. 78
    , 88 (1935)
    (Sutherland, J.); and ignored Justice Sutherland’s admonition
    that a prosecutor “may strike hard blows, but not foul ones.”
    
    Id.
    These serious violations do not warrant invocation of the
    plain error rule.