United States v. Redifer , 631 F. App'x 548 ( 2015 )


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  •                                                                                 FILED
    United States Court of Appeals
    UNITED STATES COURT OF APPEALS                        Tenth Circuit
    FOR THE TENTH CIRCUIT                       November 13, 2015
    _________________________________
    Elisabeth A. Shumaker
    Clerk of Court
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    v.                                                         No. 14-3031
    (D.C. No. 2:12-CR-20003-CM-10)
    MICHAEL C. REDIFER,                                         (D. Kan.)
    Defendant - Appellant.
    _________________________________
    ORDER AND JUDGMENT*
    _________________________________
    Before HARTZ, PHILLIPS, and McHUGH, Circuit Judges.
    _________________________________
    A jury convicted Michael C. Redifer of one count of conspiracy to possess
    with intent to distribute and to distribute 50 grams or more of methamphetamine.
    See 
    21 U.S.C. §§ 841
    (a)(1), (b)(1)(A)(viii); 
    18 U.S.C. § 2
    . The district court
    sentenced him to 360 months’ imprisonment followed by a five-year term of
    supervised release. On appeal, he asserts numerous errors at his trial and sentencing.
    We affirm his conviction, but remand for resentencing.
    *
    After examining the briefs and appellate record, this panel has determined
    unanimously that oral argument would not materially assist in the determination of
    this appeal. See Fed. R. App. P. 34(a)(2); 10th Cir. R. 34.1(G). The case is therefore
    ordered submitted without oral argument. This order and judgment is not binding
    precedent, except under the doctrines of law of the case, res judicata, and collateral
    estoppel. It may be cited, however, for its persuasive value consistent with
    Fed. R. App. P. 32.1 and 10th Cir. R. 32.1.
    The second superseding indictment in this case charged fifteen defendants,
    including Mr. Redifer, with participation in the methamphetamine conspiracy. Many
    of the conspirators reached plea agreements with the government and testified against
    Mr. Redifer and his co-defendant, Steven M. Hohn, at trial. The testimony of these
    co-defendants, along with that of law enforcement officers who investigated
    Mr. Redifer’s activities, detailed his participation in the charged conspiracy.
    The jury convicted Mr. Redifer on the conspiracy count. We previously
    affirmed Mr. Hohn’s conviction and sentence. See United States v. Hohn, 606 F.
    App’x 902 (10th Cir. 2015). To the extent Mr. Redifer raises issues previously
    disposed of in Hohn, we affirm for substantially the reasons stated in our previous
    decision.1
    Appointed counsel filed an opening brief on behalf of Mr. Redifer. We
    granted counsel’s motion to withdraw and permitted Mr. Redifer to file a
    supplemental, pro se brief. In this decision, we address the issues presented in both
    the counseled and pro se briefing.
    ALLEGED TRIAL ERRORS
    I. Sufficiency of the Evidence/Variance From the Indictment
    Mr. Redifer first argues that there was insufficient evidence to convict him of
    the charged conspiracy because “[t]he evidence did not support a shared, single
    1
    These issues include: (1) denial of a mistrial based on testimony concerning
    the Kingdom City shooting, see Hohn, 606 F. App’x at 907-08; (2) denial of
    Proposed Jury Instruction No. 4, see 
    id. at 910
    ; and (3) sufficiency of the evidence
    that the methamphetamine was imported, see 
    id. at 911
    .
    2
    criminal objective or a common, illicit goal.” Aplt. Opening Br. at 11. In a related
    argument, he contends he “did not receive a fair trial because there were multiple
    separate conspiracies and evidence about the dates and amount of drugs charged
    varied from the indictment.” 
    Id. at 15
    .
    “We review a sufficiency of the evidence challenge de novo.” United States
    v. Rodebaugh, 
    798 F.3d 1281
    , 1296 (10th Cir. 2015). “Under the
    sufficiency-of-the-evidence test, we view the evidence in the light most favorable to
    the government and ask whether the evidence—and any reasonable inferences to be
    drawn from it—would allow a reasonable jury to find the defendant guilty beyond a
    reasonable doubt.” United States v. Gallegos, 
    784 F.3d 1356
    , 1359 (10th Cir. 2015).
    To support [Mr. Redifer’s] conspiracy conviction, the government was
    required to prove [he] (1) agreed with at least one other person to violate
    the law, (2) knew of the conspiracy’s objectives, and (3) knowingly and
    voluntarily involved [him]self in the conspiracy. The government also was
    required to demonstrate (4) interdependence among the co-conspirators.
    
    Id. at 1360
    . To satisfy the requirement of interdependence, “[t]he alleged
    co-conspirators must have a shared, single criminal objective, not just have similar or
    parallel objectives between similarly situated people.” United States v.
    Acosta-Gallardo, 
    656 F.3d 1109
    , 1123 (10th Cir. 2011) (internal quotation marks
    omitted).
    Mr. Redifer argues that the government failed to prove the charged conspiracy
    because the evidence at trial revealed the conspirators had no common objective and
    no common, illicit goal. He contends that at times some of the conspirators
    exchanged only personal-use quantities, and at other times some of them only sold
    3
    methamphetamine to support their own drug habits rather than to make a profit. But
    an identical profit motive is not essential to a conspiracy, because “[t]he goals of all
    the participants need not be congruent for a single conspiracy to exist, so long as
    their goals are not at cross purposes.” United States v. Harrison, 
    942 F.2d 751
    , 756
    (10th Cir. 1991) (internal quotation marks omitted). A reasonable jury could have
    found that the participants here had congruent, if not identical goals, involving the
    distribution of methamphetamine to make money. Whether some of the conspirators
    used that money to live on or to purchase methamphetamine for personal use is
    irrelevant. Further, the fact that the conspirators had their own customers, benefitted
    separately from their own drug sales, or did not pool the money they received from
    drug sales did not prevent them from “act[ing] together for their shared mutual
    benefit within the scope of the conspiracy charged.” United States v. Heckard,
    
    238 F.3d 1222
    , 1231 (10th Cir. 2001) (internal quotation marks omitted) (italics
    omitted).
    Mr. Redifer also argues that there were fatal variances between the conspiracy
    charged and the proof at trial. “A variance arises when an indictment charges a
    single conspiracy but the evidence presented at trial proves only the existence of
    multiple conspiracies.” United States v. Carnagie, 
    533 F.3d 1231
    , 1237 (10th Cir.
    2008). “In the context of a conspiracy conviction, we treat a variance claim as a
    challenge to the sufficiency of the evidence establishing that each defendant was a
    member of the same conspiracy.” Gallegos, 784 F.3d at 1362. “Whether sufficient
    4
    evidence was presented to establish a single conspiracy is a question of fact for the
    jury to decide.” Acosta-Gallardo, 
    656 F.3d at 1124
    .
    Where the government has charged a defendant with participation in a larger
    conspiracy but the evidence instead establishes several smaller conspiracies, a
    defendant is entitled to reversal only if the variance prejudices his substantial rights.
    A variance prejudices a defendant’s substantial rights “if the evidence adduced
    against co-conspirators involved in separate conspiracies was more likely than not
    imputed to the defendant by the jury in its determination of the defendant’s guilt.”
    Carnagie, 
    533 F.3d at 1241
    . In determining whether prejudice has been shown, we
    consider (1) “whether the proliferation of separate crimes or conspiracies presented
    in the case impaired the jury’s ability to segregate each individual conspirator’s
    actions and the evidence associated with . . . his participation,” (2) “whether
    confusion among members of the jury concerning the legal limitations on the use of
    certain evidence resulted from the variance,” and (3) “the strength or weakness of the
    evidence underlying the jury’s conviction.” 
    Id.
     (brackets and internal quotation marks
    omitted).
    Even if the evidence showed the existence of multiple conspiracies,
    Mr. Redifer fails to establish prejudice requiring reversal of his conviction. Any
    evidence of separate conspiracies was unlikely to have impaired the jury’s ability to
    segregate Mr. Redifer’s actions and participation in the conspiracy to distribute and
    to possess with intent to distribute methamphetamine as charged in the indictment.
    The evidence of his participation was properly admitted and any limitations
    5
    concerning its use in connection with the charged conspiracy were unlikely to have
    confused the jury. Finally, the evidence amply demonstrated the existence of the
    charged conspiracy and Mr. Redifer’s participation in it. He has failed to
    demonstrate reversible error due to the alleged variance.2
    II. Admission of Prior State Conviction
    Mr. Redifer filed a pretrial motion in limine to exclude any mention of his
    Kansas state conviction for possession with intent to sell methamphetamine and
    possession of marijuana. The district court denied his motion, finding that the
    evidence of the arrest and conviction was relevant and that its probative value was
    not substantially outweighed by a danger of unfair prejudice. See Fed. R. Evid. 403.
    The jury heard the following testimony involving the prior conviction. Kerry
    Randall, one of the conspirators in this case, called Mr. Redifer on April 24, 2011,
    asking him to help move a trailer out of Mr. Randall’s storage unit. During their
    conversation, Mr. Redifer asked Mr. Randall if he had any methamphetamine.
    Mr. Randall said he had “some to get rid of” and told Mr. Redifer that “you can make
    a little money and I can also make some money.” R., Vol. 2 at 1900.
    2
    Mr. Redifer also complains that evidence of “the dates of the offense and the
    amount of drugs allegedly distributed presents a highly prejudicial variance from the
    offense as charged.” Aplt. Opening Br. at 13. The indictment charged a conspiracy
    involving 50 grams or more of methamphetamine. The government proved many
    times over that the conspirators, including Mr. Redifer personally, distributed greater
    quantities than the minimum 50 grams specified. As to the dates involved, the
    indictment stated that they were only “approximate and inclusive,” Second
    Superseding Indictment dated 5/22/2012, R., Vol. 1, docket number 84, at 1, and
    Mr. Redifer fails to show that he was prejudiced by any variance, particularly given
    the evidence of his personal participation at both the beginning of the alleged
    conspiracy, and later, toward its end.
    6
    Later that day, Mr. Randall and his wife met Mr. Redifer at the storage unit,
    where Mr. Randall provided Mr. Redifer with around a quarter ounce to a half ounce
    of methamphetamine. At some point, Mr. and Ms. Randall engaged in an argument
    at the storage locker, which escalated into Mr. Randall beating Ms. Randall. The
    couple then left in Mr. Randall’s truck. Mr. Redifer remained at the storage unit.
    That afternoon a police officer met with Ms. Randall. She informed the officer
    that Mr. Redifer had witnessed the beating. The officer went to the storage unit,
    where she observed Mr. Redifer’s truck and then encountered Mr. Redifer.
    While verifying Mr. Redifer’s identification, the officer walked around to the
    driver’s side of his truck. After spotting what she believed was marijuana, she
    searched the truck and found three bags of white crystal meth, several glass pipes, a
    marijuana pipe, two scales, and additional individual plastic baggies. In addition to
    these drug-related items, she found a bullet behind the driver’s side seat, and a rifle
    bullet in the driver’s door pocket. Mr. Redifer later pleaded guilty in state court to
    the drug offenses.
    This court reviews the district court’s evidentiary rulings for an abuse of
    discretion. United States v. Hill, 
    786 F.3d 1254
    , 1273 (10th Cir. 2015). The district
    court did not abuse its discretion in admitting this evidence. The incident and
    resulting conviction occurred during the time period of the conspiracy. It involved
    the co-conspirators and the drug charged in the conspiracy count, methamphetamine.
    The probative value of the evidence substantially outweighed the danger of unfair
    prejudice from admission of the evidence.
    7
    In his pro se brief, Mr. Redifer asserts additional challenges to the admission
    of this evidence. He argues that Mr. Randall committed perjury by testifying that
    Mike Roark provided the methamphetamine that Mr. Randall in turn provided to
    Mr. Redifer. But any inconsistencies in how Mr. Randall obtained the
    methamphetamine go to the weight of Mr. Randall’s testimony, and not its
    admissibility. The jury heard all of the testimony and could draw its own
    conclusions.
    Mr. Redifer also argues that by admitting evidence of the prior conviction in
    his conspiracy trial, the district court subjected him to double jeopardy. This
    argument is meritless. See United States v. Felix, 
    503 U.S. 378
    , 389 (1992).
    (“[A] substantive crime and a conspiracy to commit that crime are not the same
    offense for double jeopardy purposes.” (internal quotation marks omitted)).
    III. Admission of Photos of Conspirators Holding Guns
    Mr. Redifer challenges the admission at trial of a photograph showing himself
    and co-conspirators Mr. Hohn, Mr. Quick, and Mr. Randall, sitting on the couch
    holding guns. The district court admitted the photo at trial, after initially granting a
    motion in limine to exclude it.3
    3
    Although the district court admitted only one of three photos, it appears to
    have been presented to the jury in two different formats, as exhibits #124 (a photo
    download from a cell phone recovered from the residence at 809 S. Cedar in Gardner,
    Kansas), and #138 (a photo recovered from Mr. Quick’s Sony digital camera). The
    photo is sometimes referred to in the singular in the relevant pleadings, and
    sometimes in the plural.
    8
    In her opening statement at trial, Mr. Redifer’s counsel argued that there was
    no evidence that Mr. Redifer was involved with the conspirators the police targeted
    during their investigation. R., Vol. 2 at 608 (“[T]here’s no evidence that Mr. Redifer
    was involved with any of these individuals at that time.”). Based on this argument,
    the government sought reconsideration of the motion in limine excluding the
    photograph, reasoning that it would show Mr. Redifer’s close association with his
    co-conspirators. The district court reconsidered its earlier ruling and admitted the
    photo, finding that it was relevant because it was physical evidence linking the
    co-conspirators.
    Mr. Redifer argues that the district court’s rationale for admitting this evidence
    is flawed because: (1) his counsel admitted during her opening argument that the
    parties knew of and were involved with each other, and merely denied that their
    association constituted a “conspiracy”; and (2) the jury was informed that counsel’s
    argument was not evidence. Mr. Redifer also argues that in view of the other
    evidence these individuals knew each other, this evidence was not needed, and the
    photo was highly prejudicial.
    The photo was certainly prejudicial—given the firearms shown in it—but it
    was also highly probative. It was taken during the course of the conspiracy and
    showed a close association between the conspirators. The district court did not abuse
    its discretion in admitting the photo.
    9
    IV. Testimony Contrary to In Limine Orders
    A. The Kingdom City Shooting
    The district court granted a motion in limine to exclude evidence of a shooting
    incident in Missouri that involved certain of Mr. Redifer’s co-conspirators. At trial,
    when discussing the contents of a notebook found in her bedroom, a government
    witness made an incidental reference to the shooting. The district court denied the
    defendants’ motion for a mistrial based on the reference. Mr. Redifer now argues
    that given this reference, “[t]he jury could now assume or infer [that he] was
    involved with or associated with persons involved in robbery and shootings thereby
    making him a general bad actor.” Aplt. Opening Br. at 21.
    We discussed this issue in detail in connection with Mr. Hohn’s direct appeal.
    In our decision in that case, we stated:
    [A]t trial, as the government was questioning a witness concerning the
    contents of a notebook found in her bedroom, the witness identified names
    in the notebook as “names of the people that were involved in the shootout
    in Kingdom City.” R., Vol. 2 at 1305.
    The defendants immediately moved for a mistrial based on the witness’s
    reference to the Missouri shooting. The district court determined that the
    government had inadvertently elicited the comment. As a curative matter,
    it called each of the jurors individually into the courtroom and informed
    each juror that the statement was being stricken from the record and that
    they should disregard it. The court also reminded the jurors that the names
    mentioned in the notebook were not those of the defendants. Finally, it
    asked each juror three questions: whether they could disregard the
    statement as instructed; whether they were still able to be fair and impartial
    to all parties in the case; and whether they were still able to decide the case
    based solely on the evidence admitted at trial and the court’s instructions.
    Each juror answered all three questions affirmatively. The district court
    then denied the motion for mistrial.
    10
    We review the district court’s denial of the motion for mistrial for an abuse
    of discretion. United States v. Morgan, 
    748 F.3d 1024
    , 1039 (10th Cir.),
    cert. denied, ––– U.S. ––––, 
    135 S.Ct. 298
    , 
    190 L.Ed.2d 217
     (2014).
    Where inadmissible evidence is admitted, “a cautionary instruction is
    ordinarily sufficient to cure any alleged prejudice to the defendant and
    declaring a mistrial is only appropriate where a cautionary instruction is
    unlikely to cure the prejudicial effect of an error.” 
    Id.
     (internal quotation
    marks omitted). Here, the shooting reference was unintentionally elicited,
    and the district court very carefully instructed and questioned each juror
    about the reference, satisfying itself that “the character of the testimony
    [was not] such that it [would] create so strong an impression on the minds
    of the jurors that they [would] be unable to disregard it in their
    consideration of the case, although admonished to do so.” 
    Id. at 1040
    .
    Denial of the motion for a mistrial was therefore not an abuse of discretion.
    Hohn, 606 F. App’x at 907-08.
    The same reasoning applies here. The district court not only struck the
    offending testimony and gave the jurors a cautionary instruction, it took the
    extraordinary step of questioning each juror individually concerning the inadvertently
    elicited testimony to insure that it did not unduly prejudice the defendants. For the
    same reasons stated in our previous decision, the district court did not abuse its
    discretion in denying Mr. Redifer’s motion for a mistrial based on the reference to
    the Kingdom City shooting.
    B. The Garnett, KS, Arrest
    Mr. Redifer sought to exclude testimony about his arrest in Garnett, Kansas,
    which resulted in his conviction for fleeing and eluding an officer and for various
    other minor offenses. The district court denied his motion for an order in limine as
    moot, because the government promised not to introduce evidence about the arrest
    during its case-in-chief.
    11
    At trial, however, Mr. Quick was asked about an instance when he picked up
    Mr. Redifer’s truck after Mr. Redifer was arrested at the storage unit. The
    government asked Mr. Quick, “And were there any other times that you had
    possession of his truck?” R., Vol. 2 at 2353. He answered, “When he got arrested in
    Johnson County, and then when he got arrested in Garnett, both times. . . .” 
    Id. at 2353-54
     (emphasis added). Mr. Redifer moved for a mistrial, which the district court
    denied. We review the denial of a mistrial for an abuse of discretion. See United
    States v. Farmer, 
    770 F.3d 1363
    , 1370 (10th Cir. 2014).
    The district court did not abuse its discretion in denying the mistrial. The
    remark was only incidental, and the underlying evidence was relevant to show the
    close relationship between Mr. Quick and Mr. Redifer, illustrated by the fact that
    Mr. Quick retrieved Mr. Redifer’s truck three times when Mr. Redifer was arrested.
    Mr. Redifer complains that the comment allowed the jury to infer that he was “in and
    out of jail.” Aplt. Opening Br. at 21. But this was clear from other evidence that was
    admitted at trial.
    V. Denial of Requested Jury Instructions
    Mr. Redifer complains that four requested instructions were denied. “We
    review de novo whether the jury instructions given were adequate,” and the denial of
    particular defense instructions for an abuse of discretion. United States v. Gallant,
    
    537 F.3d 1202
    , 1233 (10th Cir. 2008) (internal quotation marks omitted). We uphold
    the denial of the requested instructions.
    12
    Mr. Redifer’s proposed instruction No. 3 would have stated that a simple
    agreement to pool money and buy drugs is insufficient to establish a conspiracy, even
    where each buyer intends to resell methamphetamine. This instruction also listed
    factors that could be used to distinguish a joint buyer relationship from a conspiracy.
    The substance of this instruction was adequately covered by the Tenth Circuit Pattern
    Jury Instruction on conspiracy charges. In addition, the proposed instruction
    contained an inaccurate statement of Tenth Circuit law. In this circuit the
    buyer-seller rule (that a mere buyer-seller relationship does not establish a
    conspiracy) does not apply to defendants who plan to resell drugs for a profit.
    See, e.g., United States v. Wright, 
    506 F.3d 1293
    , 1299 (10th Cir. 2007) (“[T]he
    purpose of the buyer-seller rule is to separate consumers, who do not plan to
    redistribute drugs for profit, from street-level, mid-level, and other distributors, who
    do intend to redistribute drugs for profit, thereby furthering the objective of the
    conspiracy.” (internal quotation marks omitted)).
    Proposed instruction No. 4 would have instructed the jury concerning various
    issues involving proof of a conspiracy. We previously upheld the denial of this
    instruction in Hohn, 606 F. App’x at 910.
    Proposed instruction No. 7 dealt with Rule 404(b) evidence. The district court
    found that its existing Rule 404(b) instruction “is an accurate reflection of the law,
    and is better left more generic than specific so as not to highlight any particular
    evidence admitted in the case.” R., Vol. 2 at 2431. In addition, in view of the
    13
    overwhelming evidence against him at trial, Mr. Redifer fails to show that he was
    prejudiced by the denial of this requested instruction.
    Mr. Redifer also requested an instruction that would have told the jury that a
    person cannot conspire with a law enforcement officer. His counsel expressed
    concern about evidence of controlled buys made by Ms. Rockers from law
    enforcement agents. The district court denied this instruction because “Tracy
    Rockers cannot conspire solely with law enforcement in regards to this evidence, but
    the purchases that were made can still be considered as part of the scope of the
    alleged conspiracy.” Id. at 2435. In view of the evidence of a conspiracy involving
    non-government agents, any error in failing to give the requested instruction was
    harmless. See United States v. Delgado, 
    672 F.3d 320
    , 341-42 (5th Cir. 2012)
    (en banc) (“Where the evidence clearly establishes that the defendant conspired with
    non-governmental participants, the mere fact a government agent was also involved
    in the scheme does not necessitate [an] instruction [that an agreement with a
    government agent cannot be the basis for a conspiracy conviction].”).
    VI. Admission of Co-Conspirator Statements
    Mr. Redifer complains that he was denied a fair trial in connection with the
    admission of hearsay statements by his co-conspirators. Federal Rule of Evidence
    801(d)(2)(E) provides that “[a] statement . . . is not hearsay” if it is “offered against
    an opposing party and . . . was made by the party’s coconspirator during and in
    furtherance of the conspiracy.” “For a statement to be admissible under Fed. R. Evid.
    801(d)(2)(E), the District Court must first find the following elements by a
    14
    preponderance of the evidence: (1) that a conspiracy existed; (2) that the declarant
    and the defendant were both members of the conspiracy; and (3) that the statements
    were made in the course of and in furtherance of the conspiracy.” United States v.
    Hall, 
    473 F.3d 1295
    , 1302-03 (10th Cir. 2007) (internal quotation marks omitted).
    These findings are generally made after a so-called James hearing,4 held outside the
    presence of a jury.
    The district court held a James hearing, at which it heard testimony from the
    government’s case agent, Deputy Williams; concluded that the necessary factors had
    been established for admission of the co-conspirators’ statements; and stated that if
    Mr. Redifer believed that any additional statements the government sought to
    introduce at trial were not in furtherance of the conspiracy, he could “bring those up
    at trial.” R., Vol. 2 at 301. Mr. Redifer argues that the hearsay statements the
    government sought to introduce were made during post-conviction interviews with
    the co-conspirators, and were therefore not made “in the course of and in furtherance
    of the conspiracy,” Hall, 
    473 F.3d at 1303
    . During the James hearing, however,
    Deputy Williams stated that he interviewed the co-conspirators, and that during those
    interviews, they provided information about conversations they had during the course
    of the conspiracy. R., Vol. 2 at 243. He also presented information concerning his
    investigation to establish the existence of the conspiracy.
    In addition, Mr. Redifer fails to identify any specific co-conspirator statements
    admitted during trial that were hearsay and not made in the course of or in
    4
    See United States v. James, 
    590 F.2d 575
    , 582 (5th Cir. 1979).
    15
    furtherance of the conspiracy. Finally, Mr. Redifer fails to show that his rights were
    violated by the government’s choice to present its evidence at the James hearing
    through the testimony of Deputy Williams. See United States v. Owens, 
    70 F.3d 1118
    , 1124 (10th Cir. 1995) (“[A]t a James hearing, the district court has the
    discretion to consider any evidence not subject to a privilege, including both the
    coconspirator statements the government seeks to introduce at trial and any other
    hearsay evidence, whether or not that evidence would be admissible at trial.”).
    VII. Government’s Alleged Use of Perjured Testimony
    Mr. Redifer argues that the co-conspirator witnesses against him committed
    perjury. He contends that the government offered their testimony knowing that it
    was false. He asks that this issue be reviewed for plain error due to the lack of
    objection at trial, and the government also asserts that it is governed by the
    plain-error standard. When reviewing an issue for plain error, we ask whether
    “(1) there was error, (2) that is plain, (3) that affects substantial rights, and (4) that
    seriously affects the fairness, integrity or public reputation of judicial proceedings.”
    United States v. Kalu, 
    791 F.3d 1194
    , 1201 (10th Cir. 2015) (internal quotation
    marks omitted).
    To establish this claim, Mr. Redifer must show that “(1) a government witness
    committed perjury, (2) the prosecution knew the testimony to be false, and (3) the
    testimony was material.” United States v. Garcia, 
    793 F.3d 1194
    , 1207 (10th Cir.
    2015). The government argues that Mr. Redifer has failed to allege facts showing
    that it knowingly offered perjured testimony and that any inconsistencies in the
    16
    witnesses’ testimony are immaterial to the jury’s verdict. Having carefully reviewed
    Mr. Redifer’s arguments and the record, we conclude that he has failed to show that
    any of the alleged instances he identifies rise to the level of knowingly offered
    perjured testimony. Mr. Redifer fails to show error, much less plain error, in the
    admission of the challenged testimony.
    VIII. Admission of Firearm
    Mr. Redifer argues that the district court plainly erred by improperly admitting
    into evidence Exhibit No. 74, a pistol that Mr. Randall testified had been stolen from
    Mr. Redifer. The pistol was recovered from Mr. Quick’s mother after Mr. Quick’s
    arrest. The pistol was relevant because it appeared to be the same firearm that
    Mr. Redifer was holding in the December 17, 2010, photograph of himself and his
    co-conspirators. Moreover, in light of the other evidence of Mr. Redifer’s
    participation in the conspiracy, he fails to show how introduction of the pistol
    seriously affected the fairness, integrity or public reputation of the judicial
    proceedings. Admission of the pistol was therefore not plainly erroneous.
    IX. “Adequate Court Facilities” Claim
    Prior to trial, Mr. Redifer filed a motion to be provided a separate counsel
    table from his co-defendant, Mr. Hohn. He argued he would “be prejudiced by being
    forced to sit in close proximity to an alleged co-conspirator throughout the trial,”
    because this would “increase[] the probability the alleged bad acts of the alleged
    co-conspirator will be attributed to Mr. Redifer by the jury,” and might cause the jury
    to view Mr. Redifer and his co-defendant as a “group.” Motion of Defendant Michael
    17
    C. Redifer for Adequate Court Facilities and Memorandum In Support Thereof dated
    05/04/2013, R., Vol. 1, docket number 276, at 1. The district court denied the
    motion, stating that it did
    not believe that [Mr. Redifer] will be prejudiced by sitting at the same table
    as his co-defendant. There are legitimate [spatial] as well as
    security-related and as well technological reasons the courtroom is set up
    the way it is, and the court would find this case does not present any special
    circumstances such that would require reevaluating that set-up. In addition,
    the court will instruct the jury to consider the innocence and guilt of each
    defendant separately.
    R., Vol. 2 at 302-03.
    Mr. Redifer has failed to show that being seated at a table with his
    co-defendant posed “an unacceptable risk . . . of impermissible factors coming into
    play” in the jury’s determination of his personal guilt or innocence. Holbrook v.
    Flynn, 
    475 U.S. 560
    , 570 (1986) (internal quotation marks omitted). In addition, the
    district court instructed the jury that the defendants were charged separately and that
    the jury must consider the innocence and guilt of each defendant separately. The
    district court did not abuse its discretion in denying Mr. Redifer’s motion to sit at a
    separate table from his co-defendant.5
    5
    Mr. Redifer argues that the failure to seat him separately from Mr. Hohn
    prejudiced him because there was insufficient evidence to convict him at trial; and
    that he was convicted solely based on prior bad acts, perjured testimony by the
    government’s witnesses, and guilt by association. For the reasons we have already
    stated, his sufficiency-of-the-evidence challenge fails, and he fails to establish
    prejudice.
    18
    X. Prosecutor’s Alleged Comments on Mr. Redifer’s Silence
    Mr. Redifer asserts that the prosecutor made improper comments infringing on
    his right to remain silent. As the government points out, see Aplee. Br. at 66,
    although Mr. Redifer cites dozens of pages from the trial transcript in his pro se
    supplemental brief, the only pertinent instance he identifies involves a comment
    made during the government’s closing argument. During closing, the prosecutor
    stated, “Steven Hohn and Michael Redifer have argued through cross-examination of
    witnesses, through opening statements that we didn’t do anything wrong. We are not
    guilty.” R., Vol. 2 at 2447 (emphasis added). Mr. Redifer’s counsel objected and
    moved for a mistrial, contending that the government had “commented on the
    defendants’ right to remain silent by indicating that the defendants are arguing [their
    innocence] through closing.” Id. at 2448. The district court denied the motion,
    reasoning that it had instructed the jury that statements of counsel were not evidence
    and that the defendants had pleaded not guilty. It then instructed the jury once again
    that statements of counsel were not evidence. Even if the challenged statement could
    be viewed as a comment on Mr. Redifer’s failure to testify, it was not so prejudicial
    as to deprive him of his Sixth Amendment right to a fair trial. The district court did
    not abuse its discretion in denying the requested mistrial.
    XI. Post-Verdict Questioning of Jurors
    Mr. Redifer complains that after the verdict was reached, the district court
    improperly permitted the prosecution to question jurors about witness credibility for
    19
    sentencing purposes. He claims this violates Fed. R. Evid. 606(b)(1), which
    provides:
    (1) Prohibited Testimony or Other Evidence. During an inquiry into the
    validity of a verdict or indictment, a juror may not testify about any
    statement made or incident that occurred during the jury’s deliberations; the
    effect of anything on that juror’s or another juror’s vote; or any juror’s
    mental processes concerning the verdict or indictment. The court may not
    receive a juror’s affidavit or evidence of a juror’s statement on these
    matters.
    Here, the government’s alleged inquiries likely did not fall within Rule
    606(b)(1), because there is no showing that they represented an inquiry into the
    validity of the jury’s verdict. See Warger v. Shauers, 
    135 S. Ct. 521
    , 528 (2014)
    (stating Rule 606(b) applies “during a proceeding in which the verdict may be
    rendered invalid.” (emphasis omitted)). But in any event, the record does not reflect
    that the district court ever permitted the government to question the jurors about the
    credibility of the witnesses at trial. The last mention of this issue on the record
    appears to be the district court’s statement just before it adjourned the proceedings:
    With regards to the contact with the jury . . . every courtroom or every court
    possibly does it in a different manner. In the past, we – we don’t allow the
    contact after a trial for different reasons. I’ll take into consideration what
    you’ve said, and I’ll let you know after I finish speaking with them.
    R., Vol. 2 at 2518.
    But there is no indication that the district court permitted inquiry of the jury
    “after . . . speaking with them.” 
    Id.
     Mr. Redifer thus fails to show record support for
    his argument.
    20
    XII. Cumulative Error
    Mr. Redifer’s counseled brief includes a perfunctory cumulative error
    argument. After stating the standard for cumulative error, he argues: “Based upon
    the aforementioned accumulation of errors committed in this case, Mr. Redifer is
    entitled to a reversal of his conviction.” Aplt. Opening Br. at 25. The purpose of
    cumulative error analysis is to address whether the “cumulative effect of two or more
    individually harmless errors has the potential to prejudice a defendant to the same
    extent as a single reversible error.” United States v. Harlow, 
    444 F.3d 1255
    , 1269
    (10th Cir. 2006) (internal quotation marks omitted). We have held that Mr. Redifer
    failed to establish prejudice in connection with his claim of a variance from the
    indictment, and that the failure to give his requested instruction concerning
    conspiracy with a law enforcement officer was at most harmless error. Considering
    these two alleged errors in the aggregate with any other potential trial errors we have
    mentioned that were individually harmless, we conclude he failed to show that the
    errors alleged affected his substantial rights. In light of the evidence against Mr.
    Redifer presented at trial, the alleged cumulative errors were harmless beyond a
    reasonable doubt. See United States v. Battles, 
    745 F.3d 436
    , 462 (10th Cir. 2014)
    (discussing cumulative error standard). Therefore, his cumulative-error argument
    fails.
    ALLEGED SENTENCING ERRORS
    The district court sentenced Mr. Redifer within the advisory Sentencing
    Guideline range calculated by the Probation Office. The Guideline range was based
    21
    on a total offense level of 42 and a criminal history score of II, yielding an advisory
    Guideline range of 360 months to life. Mr. Redifer brings several challenges to the
    calculation of his offense level. “[W]e review the district court’s legal conclusions
    under the Guidelines de novo and its findings of fact for clear error, giving great
    deference to the district court's application of the Guidelines to the facts.” United
    States v. Evans, 
    782 F.3d 1115
    , 1117 (10th Cir. 2015).
    XIII. Four-Level Guideline Increase for Conduct Involving Greg Price
    The presentence report (PSR) recommended two enhancements in
    Mr. Redifer’s base offense level based on his involvement in uncharged conduct that
    led to the death of Greg Price, a drug user who died at a trailer home owned by
    Mr. Redifer’s co-conspirators. First, it recommended a two-level increase for
    Mr. Redifer’s use of violence and threats of violence against Mr. Price in an effort to
    collect on drug debts. See U.S.S.G. Manual § 2D1.1(b)(2) (2012) (“If the defendant
    used violence, made a credible threat to use violence, or directed the use of violence,
    increase by 2 levels.”). Second, it recommended a two-level enhancement for
    physically restraining Mr. Price during the course of the offense. See id. § 3A1.3
    (“If a victim was physically restrained in the course of the offense, increase by 2
    levels.”). The district court heard testimony concerning Mr. Price’s death, ruled that
    the enhancements were appropriate, and incorporated them into its Guideline
    calculation.
    22
    A. Standard of Proof
    Ordinarily, sentencing enhancements are determined by a preponderance of the
    evidence. See United States v. O’Brien, 
    560 U.S. 218
    , 224 (2010). But Mr. Redifer
    argues that because of the disproportionate effect on his sentence, the two
    enhancements related to Mr. Price’s death required an extraordinary standard of
    proof and should have been found by “clear and convincing” evidence.
    The Supreme Court addressed the “enhanced level of proof” issue in United
    States v. Watts, 
    519 U.S. 148
     (1997), “acknowledg[ing] a divergence of opinion
    among the Circuits as to whether, in extreme circumstances, relevant conduct that
    would dramatically increase the sentence must be based on clear and convincing
    evidence,” 
    id. at 156
    . The Court found it unnecessary to reach the issue, because the
    cases before it did not present such extreme or exceptional circumstances. 
    Id. at 156-57
    ; see also McMillan v. Pennsylvania, 
    477 U.S. 79
    , 88 (1986) (upholding use of
    the preponderance standard where the petitioner did not allege that the sentencing
    enhancement was “a tail which wags the dog of the substantive offense”), overruled
    on other grounds, Alleyne v. United States, 
    133 S. Ct. 2151
    , 2157 (2013); Kinder v.
    United States, 
    504 U.S. 946
    , 948 (1992) (White, J., dissenting from denial of
    certiorari) (acknowledging circuit split concerning whether “a
    clear-and-convincing-evidence standard is appropriate when the relevant conduct
    offered at sentencing would dramatically increase the sentence”).
    Although we have left open the possibility that extraordinary circumstances
    might justify the use of a more demanding standard at sentencing than a
    23
    preponderance of the evidence, we have never applied such an enhanced standard of
    proof. See, e.g., United States v. Olsen, 
    519 F.3d 1096
    , 1105 (10th Cir. 2008)
    (“[O]ur circuit has never adopted the clear and convincing standard in so-called
    disproportionate impact cases,” but “we have reserved the question of whether, in
    some extraordinary or dramatic case, due process might require a higher standard of
    proof”); United States v. Smith, 
    208 F.3d 1187
    , 1189 (10th Cir. 2000) (assuming
    “that a heightened burden of proof might be appropriate in cases of extraordinary
    upward adjustments in sentences,” but finding no extraordinary circumstances
    justifying such a standard under circumstances of case); United States v. Washington,
    
    11 F.3d 1510
    , 1516 (10th Cir. 1993) (recognizing “the strong arguments that relevant
    conduct causing a dramatic increase in sentence ought to be subject to a higher
    standard of proof,” but applying preponderance standard to drug-quantity issue).
    But see United States v. Constantine, 
    263 F.3d 1122
    , 1125 n.2 (10th Cir. 2001)
    (stating that binding precedent forecloses any argument for higher standard for
    burden of proof in this circuit); United States v. Valdez, 
    225 F.3d 1137
    , 1143 n.2
    (10th Cir. 2000) (same).
    Mr. Redifer fails to show that the circumstances of his case were so
    extraordinary that the district court should have applied a heightened standard of
    proof. Although the conduct that resulted in the enhancements led to the death of the
    victim, the enhancements themselves were not murder-based. The district court did
    not err in applying a preponderance standard to the enhancements relating to Greg
    Price.
    24
    B. Sufficiency of the Evidence
    Three witnesses—co-conspirators Michael Quick and Tracy Rockers, and
    detective Perry Williams—testified at Mr. Redifer’s sentencing hearing about the
    events surrounding Mr. Price’s death. Although there were some discrepancies in the
    testimony concerning Mr. Redifer’s role in the events, the motivation for
    Mr. Redifer’s conduct, and the precise cause of death, the district court sufficiently
    resolved the conflicts and made appropriate findings using the preponderance
    standard.
    Specifically, with regard to use of violence in an effort to collect on drug
    debts, the district court found that “the Greg Price incident was in fact related to
    collection of drug debt,” and that violence or a credible threat of violence was used.
    R., Vol. 2 at 2769. It noted that
    Michael Quick and Tracy Rockers both testified credibly that [Mr. Redifer],
    Michael Quick and Kerry Randall made credible threats to use violence by
    taking Mr. Price to the farm. Tracy Rockers also testified that defendant
    contacted Kerry Randall as somewhat of a scare tactic to get Mr. Price to
    explain about where the money was. Tracy Rockers also testified that
    defendant actually used violence by grabbing Mr. Price by the arms to force
    him out the door. During this incident, defendant and Kerry Randall
    shoved Mr. Price, and Mr. Price fell against the door.
    
    Id.
    The district court also found the “use of restraint” enhancement appropriate. It
    stated that it
    heard evidence that defendant, Michael Quick, Tracy Rockers, and later
    Kerry Randall threatened Greg Price, and made it clear to him that he was
    not free to leave the trailer. They used guns for intimidation. In the Tenth
    Circuit, using guns to keep someone from moving is sufficient for a Section
    25
    3 A 1.3 enhancement even if defendant does not physically touch the
    victim. . . . But in this situation, the defendant and Kerry Randall took the
    physical restraint even further and did touch Mr. Price. Miss Rockers
    credibly testified that they both grabbed Mr. Price’s arms and physically
    took him to the door. As the court has [already] stated, the evidence about
    the Greg Price incident is credible, and giving an enhancement for physical
    restraint and use of violence is not double-counting. They are independent
    considerations, as the court previously held. The court, again, finds that the
    restraint occurred in relation to collection of a drug debt.
    Id. at 2771.
    The district court’s legal conclusions were proper and its findings of fact were
    not clearly erroneous. Although the witnesses disagreed on some points, for
    essentially the reasons the district court expressed, there was sufficient evidence to
    justify the sentencing Guideline enhancements. We therefore affirm the Guideline
    enhancements related to Greg Price’s death.
    XIV. Two-Level Enhancement for Possessing a Dangerous Weapon
    The district court also enhanced Mr. Redifer’s base offense level two levels for
    possession of a dangerous weapon in connection with a drug offense. See U.S.S.G.
    § 2D1.1(b)(1). It noted that “on more than one occasion, [Mr. Redifer] possessed a
    firearm during commission of the offense, including the incident in which he
    threatened Greg Price partly for non-payment of drug debts.” R., Vol. 2 at 2768.
    Mr. Redifer argues that there was insufficient evidence to show a connection
    between the firearms he possessed and the alleged drug conspiracy. The
    enhancement “should be applied if the weapon was present, unless it is clearly
    improbable that the weapon was connected with the offense.” See § 2D1.1 app. n.
    11(A). The government must prove only that the gun “was present or possessed
    26
    either during the charged offense or during other drug trafficking activity that was
    part of the same course of conduct or common scheme or plan as the offense of
    conviction.” United States v. Shippley, 
    690 F.3d 1192
    , 1199 (10th Cir. 2012) (internal
    quotation marks omitted). “Once the government proves that much, the burden shifts
    to the defendant to show that it is clearly improbable that the weapon was connected
    with the offense.” 
    Id.
     (internal quotation marks omitted).
    The government presented evidence that Mr. Redifer possessed a pistol in
    connection with threatening Greg Price to collect a drug debt from Mr. Price. The
    enhancement was appropriately applied.
    XV. Two-Level Enhancement for Imported Methamphetamine
    The district court enhanced Mr. Redifer’s base offense level by two levels
    because “the offense involved the importation of . . . methamphetamine or the
    manufacture of . . . methamphetamine from listed chemicals that the defendant knew
    were imported unlawfully.” U.S.S.G. § 2D1.1(b)(5). He argues this enhancement
    was inappropriate because the government did not establish, by a preponderance of
    the evidence, that (1) the methamphetamine was imported and (2) that he knew it was
    imported. He also contends that the enhancement did not apply because he was not
    convicted of importation or manufacturing of methamphetamine. We addressed the
    first of these issues in Mr. Hohn’s case, and need not repeat our analysis here. The
    other two issues lack merit.
    27
    A. Knowledge that Methamphetamine was Imported
    This issue involves the correct interpretation of the phrase “that the defendant
    knew were imported unlawfully” in § 2D1.1(b)(5). Mr. Redifer contends this
    scienter requirement applies both to offenses involving importation of
    methamphetamine and to offenses involving the manufacture of methamphetamine
    from listed chemicals. The Fifth Circuit has held, however, that a defendant who
    possessed and distributed imported methamphetamine, even absent knowledge that he
    knew it was imported, is subject to the enhancement. United States v. Serfass,
    
    684 F.3d 548
    , 550-52 (5th Cir. 2012). We need not resolve this issue, because
    regardless of the correct reading of the Guideline provision, we determine that the
    government proved by a preponderance of the evidence that Mr. Redifer knew the
    methamphetamine was imported.
    B. Whether Mr. Redifer’s Crime Involved Importation
    Mr. Redifer argues that “there is no basis for applying the importation
    enhancement because he was not charged with any importation or manufacturing
    offense.” Aplt. Opening Br. at 35. He does not cite any authority favorable to this
    position, and well-reasoned authority appears to be to the contrary. See, e.g., United
    States v. Foulks, 
    747 F.3d 914
    , 915 (5th Cir. 2014); United States v. Biao Huang,
    
    687 F.3d 1197
    , 1206 (9th Cir. 2012) (“[A] defendant need not be personally involved
    in the importation of illegal drugs to receive an enhancement under § 2D1.1(b)(5); it
    is enough for the government to show that the drugs were imported.”). We will
    28
    follow our sister circuits and conclude that it was sufficient for the government to
    show that the drugs were imported.6
    XVI. Drug Quantity
    A. PSR Calculations
    In sentencing Mr. Redifer, the district court relied on the drug quantity
    calculation contained in the presentence report (PSR). See R., Vol. 2 at 2767-68.
    The PSR assigned Mr. Redifer a base offense level of 34, based on an offense
    involving between 1.5 and 5 kilograms of methamphetamine. See U.S.S.G.
    § 2D1.1(c)(3). Mr. Redifer raises numerous evidentiary challenges to the PSR’s drug
    quantity calculation. He argues that (1) “[b]ecause the government alleged the
    conspiracy began in October, 2010, any drug quantities from September, 2010, are
    excluded from the PSR,” Aplt. Opening Br. at 37; (2) personal-use quantities should
    not be included in the calculation; and (3) only the methamphetamine that
    Mr. Redifer distributed during three of the months involved—October 2010, January
    2011, and May 2011—was sufficiently proved to count as relevant conduct for
    purposes of his offense level computation.
    6
    In his supplemental brief, Mr. Redifer argues that the evidence supporting
    this enhancement was hearsay. District courts can rely on hearsay at sentencing, so
    long as the evidence is sufficiently reliable. United States v. Caiba-Antele, 
    705 F.3d 1162
    , 1165 (10th Cir. 2012). Mr. Redifer fails to show that the evidence supporting
    the importation enhancement was unreliable. He also argues that there was a lack of
    proof because “[t]he alleged [H]ispanic sources were not indicted, or even
    identified.” Supp. Br. at 11-12. They were in fact identified, as the Reynoso and
    Marquez brothers. We note also that Jorge and Daniel Reynoso were indicted as
    conspirators in this case.
    29
    The district court reached the 1.5 kilogram threshold based on an estimate in
    the PSR that from September 2010 until June 2011, Mr. Redifer had received 1.5
    ounces of methamphetamine per week from Mr. Quick:
    Based on information available to the Probation Office including
    investigative reports and interviews with co-defendants, Mr. Redifer was
    involved in the distribution of methamphetamine from at least September
    2010 until June 2011[. T]he Indictment charges that the defendant was
    involved in the conspiracy, beginning in September 2010. According to
    [co-defendant Michael Quick’s] estimates, he distributed at least 1.5 ounces
    of methamphetamine weekly during that time period, approximately 9
    months (40 weeks). This equates to approximately 60 ounces (1.5 ounces x
    40 weeks = 60 oz.). 60 ounces is approximately 1,701 grams (1.701
    Kilograms methamphetamine).
    R., Vol. 3 at 25 (emphasis omitted).7
    This paragraph of the PSR incorrectly identified the commencement date for
    the conspiracy charged in the Second Superseding Indictment as September 2010
    rather than October 2010. But in a footnote, the PSR corrected this error, and also
    further explained the basis for the figure of 1.5 ounces per week allegedly distributed
    from Mr. Quick to Mr. Redifer as part of the conspiracy, concluding that the 1.5
    kilogram threshold would be met even if the time period in question began in October
    2010:
    This estimate was determined based on various co-defendants’ statements,
    see paragraphs 54, 55 and 64, of this report. Specifically, in his statements,
    Michael Quick indicated that he was providing meth to Mr. Redifer in ½
    ounces [sic] quantities, several times a week and he estimated that
    7
    According to a source not reasonably subject to dispute, one ounce is equal to
    28.3495 grams. See https://www.google.com/?gws_rd=ssl#q=ounces+to+grams
    (visited October 27, 2015). If 1.5 ounces per week are attributable to Mr. Redifer,
    this equals 42.5242 grams per week.
    30
    Mr. Redifer was provided with a “minimum” of 1.5 ounces a week, the
    conspiracy charges from October 2010. The defendant believes that the
    defendants should not be held accountable to any activity prior to the dates
    charged in the Indictment. Using the defendant’s start date, and
    maintaining an estimate of 1.5 ounces weekly, this calculates to 1.53
    Kilograms from October 2010 to June 2011. However, the U.S. Probation
    Office is of the opinion that the defendant’s dealings with Michael Quick
    starting in September 2010, were part of the instant offense and included as
    relevant conduct pursuant to USSG §1B1.3. Based on these statements, the
    amount of methamphetamine deemed attributable to the defendant in this
    report is based on a conservative estimate, calculated to the benefit of the
    defendant.
    Id. at 25, n.3.8
    The footnote in the PSR cited and relied upon paragraphs 54, 55, and 64 of the
    report. These paragraphs read as follows:
    54. Tracy ROCKERS . . . . said she was introduced to Mike QUICK in
    approximately October of 2010. ROCKERS stated QUICK was a source of
    supply for methamphetamine to a subject she knew from the Garnett,
    Kansas area named Jerry MACAFEE. . . . REDIFER would . . . sell . . . ½
    ounce of methamphetamine to ROCKERS and MACAFEE. After a period
    of time, ROCKERS began dealing with QUICK and REDIFER without
    MACAFEE. . . . ROCKERS called REDIFER and [met] him in Lawrence,
    Kansas to pick up ½ ounce quantities of methamphetamine, which he
    8
    If the relevant time frame is September 2010 until June 1, 2011, this is 273
    days, or 39 weeks. Thirty-nine weeks times 42.5242 grams per week yields 1658
    grams, above the 1.5 kilogram threshold. (The PSR’s figure, based on 40 weeks, is
    1701 grams).
    On the other hand, if the time period for drug quantity calculation began on
    October 1, 2010—the approximate beginning date of the conspiracy as pled in the
    indictment—the relevant period would be 243 days, or 34.7 weeks. 34.7 weeks times
    42.5242 grams per week yields 1476 grams, which would be just under the 1.5
    kilogram threshold. But the PSR’s figure for this period is 1.53 kilograms, which
    likely means that the Probation Office used a 36-week figure. Thirty-six weeks times
    42.5242 grams per week yields 1530.87 grams, a result very close to the 1.53
    kilograms in the PSR’s alternative figure for October 2010 to June 2011. This figure
    is still over the 1.5 kilogram threshold, but just barely.
    31
    fronted to her. ROCKERS was able to sell the ½ ounce in a 3 hour time
    period. ROCKERS then re-contacted REDIFER to get another ½ ounce to
    sell. ROCKERS received the second ½ ounce from QUICK at his
    residence, where REDIFER bragged to QUICK about how fast ROCKERS
    sold the first ½ ounce. ROCKERS was provided the second ½ ounce from
    QUICK and REDIFER. ROCKERS was also able to sell the second ½
    ounce quantity in a short period of time. ROCKERS began her dealings
    with REDIFER in late November or early December of 2010. ROCKERS
    got approximately 1 ounce of methamphetamine “every couple days” to
    sell.
    Id. at 21.
    55. ROCKERS began dealing directly with QUICK in late January of
    2011. ROCKERS knew REDIFER’s source of supply was QUICK, so she
    began dealing directly with him, so as to cut out the middle man. QUICK
    had a better price for the methamphetamine. ROCKERS was getting ½
    ounce quantities from REDIFER for $950.00 and QUICK was selling 1
    ounce quantities for $1,600.00. ROCKERS began to accompany QUICK to
    his source of supply located in Desoto, Kansas, where they would get 1-2
    ounce quantities of methamphetamine from two Mexican brothers, every 2
    or 3 days, for approximately 5 months on a consistent basis from the
    brother she knew as “LADIO.” Depending on her business at the time,
    ROCKERS might retain 1 ounce of methamphetamine while, according
    QUICK would retain an additional 1 ounce, that he would split with Steven
    HOHN, who was living with QUICK in Eudora, Kansas.
    Id.
    64. Michael QUICK . . . . stated that in September 2010, he started fronting
    ½ ounce quantities of methamphetamine several times a week to
    Mr. Redifer. He stated that he sold to Mr. Redifer a minimum of one a and
    half ounces every week until about November 2010, when he quit dealing
    directly to Mr. Redifer because of a disagreement over customers. Starting
    in November, Mr. Redifer began getting his methamphetamine from Steven
    Hohn. According to Mr. Quick, he was still supplying Mr. Redifer during
    this time because Hohn was getting methamphetamine from Mr. Quick and
    supplying it to Mr. Redifer during this time. Mr. Redifer and Mr. Quick
    worked out their differences and Mr. Quick resumed direct dealings with
    Mr. Redifer.
    Id. at 24.
    32
    B. Mr. Redifer’s Challenges to the PSR’s Drug Quantity Figure
    Using his own calculations, Mr. Redifer arrives at a figure totaling 510.29
    grams, only about a third of the PSR’s figure. The 510-gram figure would put his
    base offense level at 32 instead of 34. Thus, his total offense level would be 40
    rather than 42, resulting in a Guideline range of 324 months to 405 months, rather
    than 360 months to life. See Sentencing Table, U.S.S.G. Manual, Ch. 5, pt. A (2012).
    C. Is There Sufficient Evidence to Support the Drug Quantity
    Figure in the PSR?
    Under U.S.S.G. § 1B1.3, a defendant’s base offense level is based on his
    “relevant conduct.” United States v. Damato, 
    672 F.3d 832
    , 839 (10th Cir. 2012)
    (internal quotation marks omitted). In cases such as a drug conspiracy where a
    quantity distributed establishes the base offense level, this includes “acts and
    omissions . . . that were part of the same course of conduct or common scheme or
    plan as the offense of conviction.” U.S.S.G. § 1B1.3(a)(2). Both the PSR and the
    district court recognized that in addition to the methamphetamine involved with
    Mr. Redifer’s own drug activity, he could be held responsible for the reasonably
    foreseeable drug activity of his co-conspirators. But the specific drug quantity
    attributed to him was predicated on his personal drug activity rather than on
    reasonably foreseeable activity by his co-conspirators, and the PSR did not attempt to
    quantify their activity in order to attribute it to Mr. Redifer. Therefore, in order to
    justify the computation used in the PSR, it was necessary that there be evidence that
    33
    Mr. Redifer distributed or possessed with intent to distribute at least 1.5 ounces
    weekly from September 2010 to June 2011.
    We begin by observing that Mr. Redifer’s possession or distribution of
    methamphetamine in September 2010, though it predates the conspiracy charged in
    the indictment, meets every requirement for an act that was part of the same course of
    conduct as those alleged as part of the conspiracy. It was similar to the distribution
    during the conspiracy, involved a repetition of conduct alleged as part of the
    conspiracy, and immediately pre-dated the time period of the conspiracy. Therefore,
    the district court properly used the PSR’s relevant conduct estimate based on
    quantities distributed beginning in September 2010. See Shippley, 690 F.3d at 1200
    (stating government can consider uncharged relevant conduct arising prior to charged
    conspiracy).
    Mr. Quick testified that during September and October 2010 he provided
    Mr. Redifer with a minimum of one and one-half ounces of meth each week. In
    November 2010, Mr. Redifer and Mr. Quick had a falling-out, and Mr. Hohn began
    supplying Mr. Redifer, presumably with the same quantities. Then, at some point,
    Mr. Quick and Mr. Redifer patched up their differences, and Mr. Quick began
    supplying Mr. Redifer again.
    But this is where the factual recitation in the PSR concerning Mr. Redifer’s
    dealings with Mr. Quick ends.9 While the facts recited are sufficient to justify a
    9
    The PSR does report that Mr. Quick later bonded Mr. Redifer out of jail after
    Mr. Redifer’s arrest in June 2011. R., Vol. 3 at 24, ¶ 65. Mr. Quick stated during a
    34
    conclusion that Mr. Redifer received one and one-half ounces of meth per week
    during September, October, and November 2010, there is no specific evidence that
    Mr. Redifer continued to receive that quantity of meth from Mr. Quick after that
    point.
    The government attempts to fill in this blank with its statement that
    “[Mr.] Quick’s drug ledger, admitted at trial . . . reflected that [Mr. Redifer]
    continued to obtain distribution-quantity amounts of methamphetamine from Quick
    into late May 2011.” Aplee. Br. at 52 (emphasis added). The implication is that
    Mr. Quick supplied distribution quantities of meth to Mr. Redifer throughout the time
    period of December 2010 through May 2011. If that were true, it could be sufficient
    to satisfy the preponderance standard. But that is not what Mr. Quick’s ledger said,
    and it was not what he testified to in the testimony cited by the government.
    At trial, the government introduced a notebook kept by Mr. Quick to record his
    drug transactions. The notebook contained a reference to Mr. Redifer obtaining 20 or
    24 grams of meth from Mr. Quick, for which he paid $650. R., Vol. 2 at 2348. There
    was also reference to an old debt that Mr. Redifer owed to Mr. Quick. In addition, it
    stated that he received a half ounce, owed $850, and paid $900. There was also a
    reference to a transaction on May 13, when “Mike [Redifer] got a half ounce, 850,
    paid and then got 12, I don’t know what that 12.72, I don’t know what that is, then
    proffer interview on March 30, 2012, that Mr. Redifer owed him $2,500 for meth and
    bond money, but the PSR does not attempt to identify how much was owed for meth
    as opposed to bond money, what quantity of methamphetamine was involved, or
    when the drug debt was incurred.
    35
    paid 725, then got a seven, owed 440, paid 80, and paid 20, then 10 for something.”
    Id. at 2349. Mr. Quick described additional transactions from May 2011 as follows:
    May 21st, he got – earlier today, he got an ounce, owed 16, paid 14, owed
    200, got a seven, owed 600, paid 300, got another seven, owed 700, paid
    400, owed 300, paid 1-- 180, owes 120, got another ounce, owed 16 plus
    120, owed 1720, and then paid 1200, 520 owed, got a half ounce, owed
    1320, paid 400, owes 125 plus 125, 400 plus 125, owes 795, paid 550, paid
    150, then 95 owed.
    ....
    Then got an ounce for 16. So, that plus 95, paid 700, owed 995, paid 10,
    owes 895.
    Id. at 2351.
    Although this testimony described prolific drug activity in or around May
    2011 by Mr. Redifer, involving perhaps several ounces of methamphetamine, it does
    not fill the evidentiary gap in his drug activities between December 2010 and
    mid-May 2011.
    In its brief, the government also cites the testimony of Ms. Rockers. It claims
    that she testified at trial that “in early 2011, she obtained a half ounce of
    methamphetamine every couple of days from the defendant on credit, which she sold
    to her customers in Garnett.” Aplee. Br. at 52. From this, and her statement that she
    obtained methamphetamine from Mr. Redifer 15 to 25 times, the government
    concludes that she obtained “between 210 and 350 grams of methamphetamine” total
    from Mr. Redifer. Id. The government appears to be assuming that Ms. Rockers
    obtained one-half ounce (about 14.17 grams) each time she dealt with Mr. Redifer.
    (14.17 times 15 = 213; 14.17 times 25 = 354). But even if she dealt with him 15
    36
    times, or even 25 times, receiving a half-ounce each time, this would hardly cover the
    one-and-one half ounces a week for four months that the government needs to fill in
    between the substantiated dealings involving Mr. Redifer and Mr. Quick.
    In sum, the evidence cited in the PSR does not support the conclusion that
    Mr. Redifer was involved with one and one-half ounces per week from October 2010
    to June 2011. The evidence thus does not support the drug quantities attributed to
    Mr. Redifer in calculating his sentence. We take no position on whether the evidence
    adduced at trial and at sentencing, if properly considered, is sufficient to justify the
    sentence the district court awarded. We determine only that the evidence cited does
    not support the methodology adopted in the PSR and relied upon by the district court.
    In its response brief, the government falls back on reasonably foreseeable
    conduct not specifically relied on in the PSR. It argues that “[Mr. Redifer], Quick,
    Hohn, Rockers and Randall had a close and trusting relationship, that [Mr. Redifer]
    often stayed at Quick’s residence . . . and that [Mr. Redifer] was often present when
    Quick provided methamphetamine to others for resale.” Aplee. Br. at 53. It notes
    that Mr. Quick “admitted to selling methamphetamine at a conservative average of 3
    ounces . . . every 3 days for three years.” Id. (internal quotation marks omitted). But
    the government fails to establish the necessary elements of relevant conduct that
    would tie Mr. Redifer to the quantities distributed by Mr. Quick. More importantly,
    it fails to show that the district court made any such findings, and we decline to do so
    in the first instance. Such sentencing findings are best made by the district court,
    applying the appropriate criteria. See, e.g., United States v. Jim, 
    786 F.3d 802
    , 816
    37
    (10th Cir. 2015) (remanding, after clarification of legal error at sentencing, for
    district court’s consideration of proper legal standard in the first instance). We
    conclude that a remand for resentencing, with further findings concerning the
    appropriate drug quantity to be attributed to Mr. Redifer, is the appropriate course of
    action here. See United States v. Kristl, 
    437 F.3d 1050
    , 1054-55 (10th Cir. 2006)
    (when district court errs in applying the Guidelines, remand is appropriate unless the
    error is harmless).
    XVII. Mr. Redifer’s Request for a Variance
    Finally, Mr. Redifer argues that the district court erred in denying his request
    for a downward variance, because (1) his “conduct was less cul[p]able and in a much
    smaller scale than others involved”; (2) his “criminal history was substantially less
    than the others”; and (3) his “sentence should align with that of [Mr.] Quick who
    received a Rule 11(c)(1)(c) 20-year sentence.” Aplt. Opening Br. at 41. Mr. Quick,
    of course, pleaded guilty and was therefore not similarly situated to Mr. Redifer. But
    the district court may wish to reconsider Mr. Redifer’s request for a variance after the
    redetermination of drug quantities we have ordered on remand.
    Mr. Redifer also makes a conclusory argument that “the Trial Court failed to
    properly consider [
    18 U.S.C. § 3553
    (a)] factors and further imposed a sentence that
    was disproportionate to those individual factors for Mr. Redifer.” 
    Id.
     This
    one-sentence argument, unaccompanied by any details or discussion of the relevant
    sentencing factors, does not show that the district court abused its discretion in
    sentencing Mr. Redifer.
    38
    CONCLUSION
    We affirm Mr. Redifer’s conviction but remand for resentencing as set forth
    herein. All remaining pending appellate motions are denied.
    Entered for the Court
    Carolyn B. McHugh
    Circuit Judge
    39