United States v. Thomas , 749 F.3d 1302 ( 2014 )


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  •                                                                             FILED
    United States Court of Appeals
    PUBLISH                           Tenth Circuit
    UNITED STATES COURT OF APPEALS                    April 29, 2014
    Elisabeth A. Shumaker
    TENTH CIRCUIT                      Clerk of Court
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.                                                       No. 13-3046
    TERRY ALLEN THOMAS,
    Defendant-Appellant.
    Appeal from the United States District Court
    For the District of Kansas, Topeka, Kansas
    (D.C. No. 5:12-CR-40044-JAR-2)
    James A. Brown, Assistant United States Attorney (Barry R. Grissom, United
    States Attorney, on the brief), District of Kansas, Topeka, Kansas, for Plaintiff-
    Appellee.
    Thomas D. Haney, Stevens & Brand, L.L.P., Topeka, Kansas, for Defendant-
    Appellant.
    Before HARTZ, BALDOCK, and BACHARACH, Circuit Judges.
    BACHARACH, Circuit Judge.
    Mr. Terry Thomas was charged in federal court with selling crack cocaine and
    maintaining a place to manufacture, distribute, or use a controlled substance. He went to
    trial 146 days after his arraignment. At the trial, an informant (“L.H.”) testified that she
    had bought crack cocaine three times from Mr. Thomas. The jury apparently believed
    L.H. and found Mr. Thomas guilty on: (1) three counts of possession of crack cocaine
    with intent to distribute, and (2) two counts of using or maintaining a place for the
    manufacture or distribution of crack cocaine. With this finding, the court convicted Mr.
    Thomas and sentenced him to five concurrent prison terms of 130 months. In deciding
    on the sentence, the court attributed 26.91 grams of cocaine base to Mr. Thomas,
    assigned him a criminal-history score of 12, and enhanced the sentences for each drug
    offense based on the possession of a firearm.
    In this appeal, we address nine issues:
     Speedy Trial. The first issue is whether the pretrial delay violated the Speedy
    Trial Act, 
    18 U.S.C. §§ 3161-3174
     (2012). This statute would ordinarily require
    the court to begin the trial within 70 days of the filing of the indictment, and here
    the trial started 146 days later. But the Speedy Trial Act excludes time when
    pretrial motions were pending. With these exclusions, the delay was less than 70
    days; thus, no statutory violation took place.
     Admissibility of L.H.’s Testimony. The second issue is whether the district court
    committed plain error by allowing L.H. to testify without corroboration. L.H. was
    impeached, but her testimony was relevant and no obvious grounds existed for
    exclusion; thus, the district court did not commit plain error in allowing L.H. to
    testify.
     Admissibility of Drug Evidence. The third issue is whether the district court erred
    in allowing introduction into evidence of cocaine base that L.H. said she had
    bought from Mr. Thomas. For introduction of the evidence, the government had
    to establish a chain of custody that rendered tampering improbable. Though L.H.
    was impeached, as stated above, the district court could reasonably determine that
    tampering was improbable for the cocaine base ultimately presented in court.
    2
    Thus, the district court acted within its discretion in admitting the cocaine base
    into evidence.
     Jury Instructions. The fourth issue is whether the district court erred in instructing
    the jury. The indictment alleged that Mr. Thomas had used and maintained a
    place to manufacture or distribute cocaine base. But the district court told the jury
    that Mr. Thomas could be convicted if he used or maintained a place to
    manufacture or distribute cocaine base. Mr. Thomas challenges the instructions
    based on their use of the word “or” and failure to define the word “used.” Use of
    the word “or” was permissible even though the word “and” had been used in the
    indictment. And, the judge did not need to define “used,” as it is an easily
    understood term. Thus, the court did not err in instructing the jury.
     Sufficiency of the Evidence. The fifth issue is whether the evidence would have
    been insufficient to support the guilty verdict if the disputed evidence had been
    excluded. Because we uphold the district court’s evidentiary rulings, we conclude
    that Mr. Thomas’s sufficiency argument rests on a false premise. The district
    court did not err in allowing L.H. to testify and overruling Mr. Thomas’s
    objections to the drug exhibits. This evidence, combined with the other trial
    evidence, was sufficient for a finding of guilt.
     Cumulative Error. The sixth issue is whether two or more of the alleged errors
    require reversal of the conviction based on cumulative error. As discussed
    elsewhere, however, the district court did not commit two or more errors related to
    the conviction; thus, the court did not commit cumulative error.
     Sentencing Based on Unproven Convictions. The seventh issue is whether the
    district court erred in sentencing Mr. Thomas based on convictions that the
    government had failed to prove. On this issue, we agree with Mr. Thomas that the
    court erred. This error stems from the sentencing guidelines, which require
    consideration of criminal history. Reviewing this history, the probation officer
    relied on convictions in 2002, 2003, 2004, 2005, 2010, and 2012. Only one of
    these convictions was addressed in the government’s evidence. Nonetheless, the
    district court applied a harsher guideline range based on six of the convictions.
    The government concedes error, and we agree that the district court erred by
    relying on convictions that had not been proven.
     Sentencing Based on Conduct that Was Not Involved in the Conviction. The
    eighth issue is whether the district court erred in sentencing Mr. Thomas based on
    drug quantities and a firearm that did not factor into the conviction. In sentencing,
    however, the district court can rely on conduct that did not result in a conviction.
    Thus, the sentencing was not tainted.
    3
     Minor Participant. The ninth issue is whether the district court should have
    calculated a lower guideline range based on status as a minor participant. But, this
    issue was inadequately briefed. Thus, we decline to address the issue.
    Based on these conclusions, we uphold the conviction, but reverse and remand for
    resentencing.
    I.      Speedy Trial
    In part, Mr. Thomas challenges his conviction under the Speedy Trial Act.
    Appellant’s Opening Br. at 21-23. This statute ordinarily requires a defendant’s trial to
    begin within 70 days of the arraignment. 
    18 U.S.C. § 3161
    (c)(1) (2012). Though Mr.
    Thomas’s trial started 146 days after his arraignment, the district court denied his motion
    to dismiss. In reviewing this decision, we engage in:
    ●       de novo review regarding compliance with the Speedy Trial Act and
    ●       review for abuse of discretion over denial of the motion to dismiss.
    United States v. Vogl, 
    374 F.3d 976
    , 983-84 (10th Cir. 2004).
    Without any exclusions, the 146-day period between Mr. Thomas’s arraignment
    and the beginning of trial would violate the Speedy Trial Act. But the Act excludes
    certain blocks of time from the 70-day period, and four time periods are excludable here:1
    ●       June 12, 2012, to June 21, 2012 (9 days);
    ●       August 21, 2012, to October 30, 2012 (70 days);
    ●       October 30, 2012, to November 1, 2012 (2 days); and
    ●       November 1, 2012, to November 5, 2012 (4 days).
    1
    The government also contends that another day is excluded because of a one-day
    continuance given to a codefendant. We need not decide if that day is excludable
    because it would not materially affect the issue under the Speedy Trial Act.
    4
    Thus, the Speedy Trial Act excludes 85 of the 146 days between Mr. Thomas’s
    arraignment and the beginning of his trial, leaving 61 days. Because the 61-day period
    did not exceed 70 days, the delay did not violate the Speedy Trial Act.
    First, the 9-day period of June 12, 2012, to June 21, 2012, was excludable. During
    this period, the last of Mr. Thomas’s codefendants had not yet been arraigned. Though
    Mr. Thomas had been arraigned on June 12, 2012, the Speedy Trial Act excludes
    reasonable periods of delay when defendants are joined for trial and does not start until
    the last defendant is arraigned. See 
    id.
     § 3161(h)(6); United States v. Young, 
    45 F.3d 1405
    , 1410 n.5 (10th Cir. 1995). In Mr. Thomas’s case, the last codefendant (Ms. Janaya
    Stewart) was arraigned on June 21, 2012, so the 70-day period began on June 21 rather
    than June 12.
    Second, the statutory period does not include the 70 days from August 21, 2012, to
    October 30, 2012. This period is excluded under 
    18 U.S.C. § 3161
    (h)(6) (2012), which
    allows “[a] reasonable period of delay when the defendant is joined for trial with a
    codefendant as to whom the time for trial has not run and no motion for severance has
    been granted.” When the delay is reasonable, “[a]n exclusion for delay ‘attributable to
    one defendant is applicable to all co-defendants.’” United States v. Vogl, 
    374 F.3d 976
    ,
    983-84 (10th Cir. 2004)2 (quoting United States v. Mobile Materials, Inc., 
    871 F.2d 902
    ,
    915 (10th Cir. 1993)).
    2
    Mr. Thomas argues that Vogl misapplied the statute. See Appellant’s Opening Br.
    at 22 (“The Court in Vogl read matters into the Speedy Trial Act which do not exist . . . .).
    But we are bound by Vogl, as it constitutes precedent and we cannot overrule the decision
    of another panel. See United States v. Morris, 
    247 F.3d 1080
    , 1085 (10th Cir. 2001).
    5
    The 70-day delay was reasonable here. We require courts applying the
    reasonableness standard to examine “all relevant circumstances.” Id. at 984. Three
    factors are pertinent: “(1) whether the defendant is free on bond, (2) whether the
    defendant zealously pursued a speedy trial, and (3) whether the circumstances further the
    purpose behind the exclusion to ‘accommodate the efficient use of prosecutorial and
    judicial resources in trying multiple defendants in a single trial.’” Id. (quoting United
    States v. Olivo, 
    69 F.3d 1057
    , 1061-62 (10th Cir. 1995)).
    The district court examined all relevant circumstances and correctly applied the
    three factors. I R. at 87. The first factor weighed against tolling the speedy trial clock
    because Mr. Thomas was not free on bond, but the other two factors supported tolling.
    
    Id.
     Mr. Thomas did not zealously pursue a speedy trial and trying the defendants
    separately would have required the government to prove the same facts in different trials.
    
    Id.
     We agree with the district court that the delay was reasonable and conclude that this
    70-day period was excludable from Mr. Thomas’s speedy trial calculation.
    Third, the 2-day period from October 30, 2012, to November 1, 2012, is
    excludable under 
    18 U.S.C. § 3161
    (h)(1)(D) (2012). This provision excludes the period
    in which any pretrial motion is pending. 
    18 U.S.C. § 3161
    (h)(1)(D) (2012). The
    exclusion applies because Mr. Thomas filed a motion to dismiss that was pending on
    October 31 and November 1. I R. at 58-59, 85-90.
    Fourth, the 4-day period from November 1, 2012, to November 5, 2012, is
    excluded under 
    18 U.S.C. § 3161
    (h)(1)(D) (2012). This section excludes the days in
    which a pretrial motion is pending. 
    18 U.S.C. § 3161
    (h)(1)(D) (2012). Under this
    6
    section, 4 days are excluded because Mr. Thomas filed a motion in limine and it
    remained pending on November 2, 3, 4, and 5. I R. at 868-69.
    With exclusion of these four blocks of time, encompassing 85 days, the pretrial
    delay spanned only 61 days. Because this delay did not exceed 70 days, the district court
    did not abuse its discretion in denying Mr. Thomas’s motion to dismiss.
    II.    Admissibility of L.H.’s Testimony
    Before serving as an informant against Mr. Thomas, L.H. obtained felony
    convictions for forgery, theft, obstruction of justice, and drug possession. III R. at 14,
    145-46. Following these convictions, police arrested L.H. on an unrelated charge and she
    agreed to cooperate by purchasing drugs from Mr. Thomas under the supervision of law
    enforcement. 
    Id. at 14-16
    . L.H. made three purchases of crack, which involved
    quantities of 1.03 grams, 0.28 grams, and 0.18 grams.3 
    Id. at 17-18, 22, 26, 31-32, 40, 47-51, 81, 134-35, 138-40
    ; see 
    id. at 199
    .
    Mr. Thomas argues that the district court should have excluded L.H.’s testimony.
    Appellant’s Opening Br. at 23-27. We would ordinarily review the trial court’s decision
    to admit testimony for an abuse of discretion. United States v. Poole, 
    929 F.2d 1476
    ,
    1479 (10th Cir. 1991). But the government contends we should review for plain error
    and argues that Mr. Thomas did not adequately raise the issue below. Appellee’s Br. at
    16. Mr. Thomas disagrees. Appellant’s Reply Br. at 1-2. We need not decide whether
    3
    Mr. Thomas argues that these purchases were not “controlled.” Appellant’s
    Opening Br. at 2, 27. But this argument does not affect the substance of our inquiry or
    the district court’s. Admissibility turns on the rules of evidence, not whether police
    officers would consider the buy a “controlled” one.
    7
    to confine our review to the plain-error standard because we would uphold the
    evidentiary ruling even under the less deferential abuse-of-discretion standard. United
    States v. Caldwell, 
    585 F.3d 1347
    , 1355 (10th Cir. 2009).
    The testimony was relevant and would generally be considered admissible. Fed.
    R. Evid. 401-02. But the district court had discretion to exclude L.H.’s testimony if its
    probative value had been “substantially outweighed by a danger of . . . unfair prejudice.”
    Fed. R. Evid. 403.
    Mr. Thomas challenges L.H.’s testimony as uncorroborated. Appellant’s Opening
    Br. at 23-27. But corroboration is not required for introduction of the evidence. See
    United States v. Cox, 
    934 F.2d 1114
    , 1120-21 (10th Cir. 1991) (uncorroborated testimony
    of a co-conspirator is sufficient for a finding of guilt). Thus, the district court did not
    abuse its discretion by allowing L.H. to testify even if her account had been
    uncorroborated.
    III.   Admissibility of Drug Evidence
    According to Mr. Thomas, the drug evidence was inadmissible because the
    government failed to establish an adequate chain of custody. Appellant’s Opening Br. at
    27-29. He argues in his opening brief that the government did not establish a chain of
    custody to and from the laboratory (Kansas Bureau of Investigation). Id. at 28. In his
    reply brief, he argues that L.H. had stolen some of the cocaine base. Appellant’s Reply
    Br. at 3.
    We review the district court’s admission of evidence for abuse of discretion.
    United States v. Cardenas, 
    864 F.2d 1528
    , 1530 (10th Cir. 1989). “A chain of custody
    8
    indirectly establishes the identity and integrity of the evidence by tracing its continuous
    whereabouts.” United States v. Gay, 
    774 F.2d 368
    , 374 (10th Cir. 1985). When the
    evidence is not readily identifiable and is susceptible to tampering or contamination—
    which is the case with cocaine—the government must show a “‘‘chain of custody’ of the
    item with sufficient completeness to render it improbable that the original item has been
    exchanged with another or been contaminated or tampered with.’” Cardenas, 
    864 F.2d at 1531
     (quoting Edward Cleary, McCormick on Evidence § 212, at 668 (3d ed. 1984)).
    The trial court may admit the evidence if it “is substantially in the same condition as
    when the crime was committed.” Id.
    Admissibility does not require a perfect chain of custody. United States v. Smith,
    
    534 F.3d 1211
    , 1225 (10th Cir. 2008). When the chain is imperfect, deficiencies bear on
    the weight of the evidence rather than its admissibility. 
    Id.
    The district court did not abuse its discretion by admitting the drug exhibits into
    evidence. Officer Kim Hanika testified that she had received the crack cocaine from L.H.
    immediately after each buy, packaged it, put on a label and badge number, and checked
    the item into the property room. III R. at 27-29, 33-35, 47-51. The officer added that she
    later took or caused the drugs to be taken to the Kansas Bureau of Investigation for
    analysis. Id. at 29, 35, 50. When the Bureau finished its analysis, the drugs were
    returned to Officer Hanika or her agent. Id. She then had the drugs taken to the property
    room. Id. at 35. From there, Officer Hanika brought the drugs to court. Id. at 50. These
    actions entail a nine-step chain of custody:
    9
    1                               2                                3
    • Thomas to L.H.                • L.H. to Hanika                 • Hanika to
    Property Room
    6                               5                                4
    • KBI to Hanika                 • Hanika to KBI                  • Property Room
    to Hanika
    7                               8                                9
    • Hanika to                     • Property Room                  • Hanika to
    Property Room                   to Hanika                        Courthouse
    Of the nine steps in the chain, Mr. Thomas focuses on the first, second, fifth, sixth,
    and ninth steps. The first two steps involve L.H.’s role in obtaining the drugs and handing
    them to Officer Hanika. The fifth and sixth steps involve Officer Hanika’s role in
    causing the drugs to be sent to and from the Kansas Bureau of Investigation. The ninth
    step involved taking the drugs to the courthouse.
    The first two steps were adequately supported for purposes of admissibility. L.H.
    testified that she had obtained the drugs from Mr. Thomas and given them to Officer
    Hanika. Id. at 137-38. This testimony was corroborated by Officer Hanika. Id. at 26, 29,
    34, 48-49. From this evidence, the district judge could reasonably conclude that L.H.
    probably had not tampered with the drugs that she turned over to Officer Hanika.
    10
    Mr. Thomas questions this conclusion based on L.H.’s admission that she had kept
    some of the cocaine base. We disagree. Though L.H. admitted that she had taken some
    of the drugs, those drugs were never given to Officer Hanika or introduced into evidence.
    As a result, the district judge could reasonably discount the possibility that L.H. had
    tampered with the drugs that were ultimately given to Officer Hanika.
    In addition, Mr. Thomas challenges the sufficiency of the evidence at the fifth and
    sixth steps. These challenges are rejected.
    Officer Hanika testified that she had taken the drugs from the Kansas Bureau of
    Investigation or had them taken there. Id. at 33. The officer added that when the testing
    was finished, she sent the drugs back to the property room. Id. Mr. Thomas argues that
    Officer Hanika did not provide an “explanation . . . for such transportation.” Appellant’s
    Opening Br. at 28. But Mr. Thomas has not suggested any possibility for tampering with
    the drug exhibits, for they remained identifiable based on Officer Hanika’s labeling. See
    United States v. Johnson, 
    977 F.2d 1360
    , 1368 (10th Cir. 1992) (holding that a chain of
    custody was sufficient when an officer testified that he “either gave [the physical
    evidence] to an OSBI chemist or to another agent who relayed them to the chemist”).
    Finally, Mr. Thomas states, without any explanation or support, that the
    government did not present a chain of custody “from the lab [Kansas Bureau of
    Investigation] to court.” Appellant’s Opening Br. at 28. Officer Hanika testified that she
    had personally checked the drug exhibits out of the property room and brought them to
    the courtroom. III R. at 33. Mr. Thomas does not suggest any deficiencies in this
    evidence regarding the ninth step.
    11
    Mr. Thomas gives little reason to suspect tampering with the drugs that were
    ultimately given to Officer Hanika, tested, and introduced into evidence. Without more,
    we conclude that the district court did not abuse its discretion admitting the drugs into
    evidence. See United States v. Washington, 
    11 F.3d 1510
    , 1512, 1514 (10th Cir. 1993)
    (holding that the district court did not err in allowing introduction of drugs, which were
    obtained by a confidential informant, even though the informant had an opportunity to
    tamper with the drugs “because of the absence of or breaks in visual surveillance”);
    United States v. Irving, 
    665 F.3d 1184
    , 1194 (10th Cir. 2011) (holding that the chain of
    custody was sufficient even though investigators breached their protocol by failing to
    search the confidential informant and failing to employ continuous surveillance of the
    buy). At most, the perceived deficiencies in the chain of custody would affect the
    “weight of the evidence, not its admissibility.” United States v. Cardenas, 
    864 F.2d 1528
    , 1531 (10th Cir. 1989).
    IV.    Jury Instructions
    Mr. Thomas raises three objections to the jury instruction on the use or
    maintenance of a place to distribute cocaine base. Appellant’s Opening Br. at 14-17.
    First, the district court instructed the jury that it could convict Mr. Thomas if he
    had “used or maintained a place for the purpose of manufacturing or distributing a
    controlled substance.” I R. at 126 (emphasis added). But the indictment charged that he
    had “use[d] and maintain[ed] places . . . for the purpose of manufacturing and
    distributing a controlled substance.” Id. at 17 (emphasis added). Mr. Thomas contends
    12
    the instruction should have matched the indictment by using the conjunctive “and” rather
    than the disjunctive “or.” Appellant’s Opening Br. at 29-38.
    Second, Mr. Thomas implies that the district court should have defined the word
    “used.” Id. at 30-31.4
    Third, he argues that the instructions would have allowed a conviction on the
    premises charge if he had sold drugs in any place. Id. at 38. This interpretation would
    stretch the criminal statute to an absurdity.
    We review the jury instructions de novo and “view them in the context of the
    entire trial to determine if they ‘accurately state the governing law and provide the jury
    with an accurate understanding of the relevant legal standards and factual issues in the
    case.’” United States v. Bedford, 
    536 F.3d 1148
    , 1152 (10th Cir. 2008) (quoting United
    States v. Crockett, 
    435 F.3d 1305
    , 1314 (10th Cir. 2006)). In doing so, we consider
    whether the district court abused its discretion in “shaping or phrasing . . . a particular
    jury instruction” and deciding to give or refuse a particular instruction. 
    Id.
    Mr. Thomas’s first argument fails. The statute, like the challenged instruction, is
    phrased in the disjunctive. See 
    21 U.S.C. § 856
    (a)(1) (2012) (it shall be unlawful to
    “use[] or maintain any place . . . for the purpose of manufacturing, distributing, or using
    any controlled substance”). When the statute is phrased in the disjunctive, we have held
    that:
    4
    Mr. Thomas does not expressly challenge the instruction based on the omission of
    a definition for “use.” See Appellant’s Opening Br. at 30-31. But Mr. Thomas implicitly
    raises the issue by criticizing the absence of a definition. Thus, we construe his argument
    as seeking reversal based in part on the district court’s failure to define the term “use.”
    13
    ●         the government may phrase the indictment to allege that the
    defendant did both things and
    ●         the district court can allow the government to prove that the
    defendant violated the law by performing either of the two
    prohibited acts.
    United States v. Gunther, 
    546 F.2d 861
    , 868-69 (10th Cir. 1976); see United States v.
    Powell, 
    226 F.3d 1181
    , 1192 n.4 (10th Cir. 2000) (stating that an instruction was correct
    when it identified the elements in the disjunctive (or) even though the indictment was
    stated in the conjunctive (and)); see also United States v. Pauldino, 
    443 F.2d 1108
    , 1112
    (10th Cir. 1971) (“It is settled that where a crime denounced disjunctively in the statute is
    charged in the conjunctive, proof of any one of the allegation [sic] will sustain a
    conviction.”).
    We addressed a similar issue in an unpublished opinion: United States v.
    McGehee, 177 F. App’x 815 (10th Cir. 2006). Like Mr. Thomas, Mr. McGehee was
    indicted under 
    21 U.S.C. § 856
    (a)(1). See McGehee, 177 F. App’x at 822. The
    indictment charged him with maintaining a place to manufacture, distribute, and use
    drugs. See 
    id.
     (emphasis added). Though the indictment used the word “and,” the jury
    instruction used the word “or.” See 
    id.
     We held that the instruction was correct,
    reasoning that the court properly instructs in the disjunctive even when the indictment is
    phrased in the conjunctive. 
    Id.
    Though McGehee is unpublished, we regard it as persuasive because it presents a
    classic application of settled precedents to § 856(a)(1), which is phrased in the
    14
    disjunctive. Under the reasoning employed in McGehee, we conclude that the jury
    instruction was proper.
    We also reject Mr. Thomas’s second argument because the district court did not
    err by omitting a definition for the word “used.” Because the word is commonplace, the
    district court could reasonably conclude that a definition was unnecessary. See United
    States v. Bryant, 
    892 F.2d 1466
    , 1468 (10th Cir. 1989) (holding that the district court did
    not err by omitting a definition of the phrase “wanton and reckless disregard for human
    life” because this phrase was commonplace); see also United States v. Robinson, 
    435 F.3d 1244
    , 1249-50 (10th Cir. 2006) (holding that the district court did not err in the jury
    instructions by not defining “in furtherance of” when the statutory term comported with
    the phrase’s ordinary meaning).
    Third, we reject Mr. Thomas’s argument that the instructions would have
    permitted a conviction on the premises charge if the jury found a drug sale in any place.
    See Appellant’s Opening Br. at 38. This argument is untenable based on the instructions
    as a whole, for the judge elsewhere told the jury that it could find guilt on the premises
    charge only if drug activity was a “significant reason” for Mr. Thomas’s maintenance of
    a place. I R. at 127. Accordingly, Mr. Thomas’s third argument is invalid.
    V.     Sufficiency of the Evidence
    Mr. Thomas challenges the sufficiency of the evidence on both the distribution
    and premises counts. Appellant’s Opening Br. at 38-40. In addressing this challenge, we
    view the evidence in the light most favorable to the government and review the record de
    novo to determine whether “any rational trier of fact could have found the defendant
    15
    guilty of the crime beyond a reasonable doubt.” United States v. Irvin, 
    682 F.3d 1254
    ,
    1266 (10th Cir. 2012). In making this determination, we consider all the evidence that
    was introduced, even if the district court had erred in allowing use of the evidence. See
    Davis v. Workman, 
    695 F.3d 1060
    , 1078-79 (10th Cir. 2012) (“[W]hen considering a
    challenge to the sufficiency of the evidence, we consider all evidence admitted at trial,
    even if admitted improperly.”).
    On the distribution counts, Mr. Thomas’s sufficiency challenge turns on his earlier
    challenges to the admissibility of L.H.’s testimony and the drug evidence. See
    Appellant’s Opening Br. at 39-40 (incorporating arguments about admissibility of
    evidence in the challenge to sufficiency of the evidence on the distribution charges).
    Earlier, we held that L.H.’s testimony and the drug evidence were admissible. Based on
    this evidence, we also reject Mr. Thomas’s challenge to the sufficiency of the evidence
    on the distribution charges. As we have held, “[i]t is the right of the jury to determine the
    credibility of each witness, and a jury may convict based on the uncorroborated testimony
    of a co-conspirator.” See United States v. Cox, 
    934 F.2d 1114
    , 1120-21 (10th Cir. 1991)
    (internal citation omitted). Although Mr. Thomas presented numerous grounds to
    impeach L.H., the jury could determine whether she was credible. The jury decided she
    was, and we will not second-guess that decision.
    Mr. Thomas also contends that the evidence was insufficient to convict on the
    premises charge because the apartments had been maintained by a codefendant.
    Appellant’s Opening Br. at 38-40. This contention overlooks the ability of the court to
    convict if Mr. Thomas had used (rather than maintained) the apartments for an illicit
    16
    purpose. We have already held that the jury could have found Mr. Thomas guilty of
    violating 
    21 U.S.C. § 856
    (a)(1) if he had used the apartments to distribute drugs.
    Because Mr. Thomas does not challenge the ability of the court to convict on a “use”
    theory, the evidence sufficed on the premises charge.
    VI.       Cumulative Error
    Mr. Thomas’s cumulative-error challenge does not raise any new errors and relies
    on his earlier theories. Appellant’s Opening Br. at 40-41. Because Mr. Thomas has not
    identified two or more errors on the conviction, we reject his cumulative-error challenge.
    VII.      Sentencing Based on Unproven Convictions
    The district court adopted the findings in Mr. Thomas’s presentence investigation
    report. II R. at 53. Consistent with the federal sentencing guidelines, the district court
    sentenced Mr. Thomas to concurrent 130-month sentences on each count based on a
    criminal history score of 12 (category V) and an offense level of 28. 
    Id. at 21, 53
    ; III R.
    at 323.
    The author of the presentence investigation report (and the district court)
    calculated Mr. Thomas’s criminal-history score as 12. II R. at 19-21. This score was
    based in part on 10 criminal-history points for convictions in 2002, 2003, 2004, 2005,
    2010, and 2012. 
    Id. at 19-20
    . Because Mr. Thomas was still under probation for his
    2010 conviction, 2 points were added to his criminal-history score under the U.S.
    Sentencing Guidelines Manual § 4A1.1(d) (2012). Id. at 21. With this score, the offense
    level was calculated at 28 based in part on a 2-level firearm enhancement. Id. at 13-15.
    17
    Mr. Thomas challenges his criminal history score, arguing that the government
    failed to prove his prior convictions by a preponderance of evidence. Appellant’s
    Opening Br. at 45-46. We agree and reverse and remand on this issue.
    A.     Standard of Review
    We review Mr. Thomas’s sentence for procedural reasonableness under an abuse
    of discretion standard. United States v. Gordon, 
    710 F.3d 1124
    , 1160 (10th Cir. 2013).
    In considering procedural reasonableness, we engage in de novo review over the district
    court’s legal conclusions and apply the clear-error standard to factual conclusions. 
    Id.
     A
    sentence is procedurally unreasonable if the district court miscalculates the guideline
    range or “relies on clearly erroneous facts.” 
    Id.
     (internal quotation marks omitted).
    B.     Mr. Thomas’s Criminal History
    In the presentence investigation report, the probation department calculated Mr.
    Thomas’s criminal-history score based on convictions in 2002, 2003, 2004, 2005, 2010,
    and 2012. II R. at 19-20. Mr. Thomas demanded proof of the convictions. 
    Id. at 34
    ; III
    R. at 302-03. Thus, the government had to show the convictions by a preponderance of
    the evidence. See United States v. Watts, 
    519 U.S. 148
    , 156 (1997) (per curiam).
    In response, the government presented documentation of convictions in 1995,
    1996, 2001, and 2002. Gov’t Sentencing Ex. 1; see III R. at 304. Of these convictions,
    only the one in 2002 resulted in criminal-history points. See II R. at 17-19. But the
    documentation did not address the conviction in 2003, 2004, 2005, 2010, or 2012.
    Without these convictions, Mr. Thomas’s criminal-history score would have been less
    18
    than 12. See II R. at 19; U.S. Sentencing Guidelines Manual, Sentencing Table, Ch. 5,
    Pt. A (2012).5
    The government conceded the error in oral argument, but argued that it had
    provided Mr. Thomas with documents relating to his 2001, 2002, and 2003 convictions.
    Appellee’s Br. at 54. The argument is immaterial because Mr. Thomas challenges the
    sufficiency of the evidence, not the notice.
    Because the government did not prove the 2003, 2004, 2005, 2010, or 2012
    convictions, they should not have been used to increase Mr. Thomas’s criminal-history
    score. By relying on these convictions, the district court abused its discretion. Thus, we
    reverse and remand for resentencing.
    With the remand, we must decide whether to give the government a second
    opportunity to present evidence of the prior convictions. “Although a remand for
    resentencing generally allows the district court to conduct de novo review, we exercise
    our discretion” and direct the district court to resentence Mr. Thomas based on the
    existing record. United States v. Forsythe, 
    437 F.3d 960
    , 963 (10th Cir. 2005).
    We are guided by three considerations:
    ●      The government bore the burden to prove the prior convictions;
    5
    The district court added two points based on commission of the offense while
    under a sentence issued in 2010. See II R. at 20-21. Because the 2010 conviction was
    not proven, a further addition of two points may have been erroneous. But this issue has
    not been briefed.
    19
    ●         Mr. Thomas alerted the government to the deficiency in its proof;6
    and
    ●         the government made no effort to cure the deficiency in its proof.
    Appellant’s App., vol. 3 at 309-12.
    In United States v. Forsythe, these considerations led us to confine the district
    court on remand to the existing record. Forsythe, 437 F.3d at 963-64. There we reversed
    the sentence because the government had failed to prove that a prior burglary conviction
    involved a dwelling. Id. at 962-63. The government asked us to remand for de novo
    resentencing so that it could present new evidence regarding the burglary. See id. at 963.
    We declined this request, concluding that the government should not have a second
    opportunity to make the record that it failed to make earlier. Id. at 963-64. For this
    conclusion, we relied on the government’s burden of proof, the defendant’s effort to alert
    the government to the deficiency in its evidence, and the government’s failure to cure the
    6
    The government presented an exhibit, stating that it “illustrate[s] the defendant’s
    criminal history.” Appellant’s App., vol. 3 at 304. Defense counsel then argued:
    [Government’s Exhibit 1] provides further confusion because those offenses
    that are listed there are not the ones in the presentence report that count.
    The 10 points don’t come from these offenses. One of them -- two of them
    are timed out. Three of them. An ’01 conviction, a ’94 conviction, a ’96
    conviction. They’re timed out to begin with. And the last two that are
    mentioned, ’99 and 2000, they’re not in the presentence report. So there
    isn’t any correlation between what’s in the presentence report and the
    defendant’s criminal history in proving the defendant committed any of
    those offenses.
    Id. at 309-10.
    20
    deficiency. Id.; see also United States v. Campbell, 
    372 F.3d 1179
    , 1183 (10th Cir. 2004)
    (reversing and remanding for resentencing based on the existing record).
    The same factors apply here, and we too decline to give the government a second
    opportunity to make the record that it failed to make the first time. Thus, on remand, the
    district court must recalculate the criminal-history score based on the existing record.
    VIII. Sentencing Based on Conduct Not Involved in the Conviction
    Mr. Thomas raises three challenges to his sentencing based on conduct that was
    not involved in his convictions. Appellant’s Opening Br. at 41-45. He contends that: (1)
    the district court should have attributed only 1.49 grams of cocaine base to him (the total
    amount of cocaine base underlying the 3 sales involved in the present conviction); (2) the
    government failed to support the 2-level firearm enhancement; and (3) he was entitled to
    a 2-level deduction as a “minor participant.” 
    Id.
     We reject these challenges.
    A.     Drug Quantity Evidence
    The district court attributed 26.91 grams of crack cocaine to Mr. Thomas from
    three sources: (1) 22.18 grams found in an apartment; (2) 0.18 grams located in a nearby
    baggie; and (3) 4.55 grams charged in the indictment. II R. at 13. Mr. Thomas
    challenges the district court’s attribution of all but the 1.49 grams underlying his
    conviction. Appellant’s Opening Br. at 41-43. We review this contention for clear error.
    See United States v. Caldwell, 
    589 F.3d 1323
    , 1333 (10th Cir. 2009).
    Mr. Thomas argues that he was convicted of distributing only 1.49 grams of
    cocaine base and could not have been sentenced based on additional quantities because:
    (1) he was not charged with conspiracy or aiding and abetting and the jury made no such
    21
    findings, and (2) the district court impermissibly relied on Government Sentencing
    Exhibit 2 and unreliable hearsay. Appellant’s Opening Br. at 41-43. We reject both
    arguments.
    First, the district court could sentence Mr. Thomas based on uncharged conduct.
    Under the federal sentencing guidelines, Mr. Thomas bears responsibility for: (1) “all
    acts and omissions [he] committed, aided, abetted, counseled, commanded, induced,
    procured, or willfully caused,” and (2) “all reasonably foreseeable acts and omissions of
    others in furtherance of [a] jointly undertaken criminal activity.” U.S. Sentencing
    Guidelines Manual §§ 1B1.3(a)(1)(A), 1B1.3(a)(1)(B) (2012). For use in sentencing, the
    government need not charge the conduct or present it to a jury. See United States v.
    Rodriguez-Felix, 
    450 F.3d 1117
    , 1131 (10th Cir. 2006).
    Second, the district court did not impermissibly rely on Government Sentencing
    Exhibit 2 or unreliable hearsay. Instead, the district court relied on trial evidence to
    attribute 26.91 grams of cocaine base to Mr. Thomas. See III R. at 316-17. Based on that
    evidence, the district court found that:
    ●      Mr. Thomas “was a lieutenant” in the overall drug operation,
    ●      “he and Mr. Hayes were acting in concert in using a lot of [the] same
    people to sell from residences around Topeka,” and
    ●      the additional sales were “reasonably foreseeable to [Mr. Thomas] in view
    of his joint operation with Mr. Hayes and others.”
    Id. at 317-18. Because the district court could include the quantities established by the
    trial evidence, we uphold the district court’s attribution of 26.91 grams to Mr. Thomas.
    22
    B.     The Firearm Enhancement
    The federal sentencing guidelines require the district court to apply a two-level
    sentencing enhancement if the defendant possessed a firearm in connection with a drug
    offense. U.S. Sentencing Guidelines Manual § 2D1.1(b)(1) (2012). The district court
    applied this enhancement because police had found a gun under a couch and drugs in the
    apartment when they arrested Mr. Thomas. III R. at 314; see id. at 307. Mr. Thomas
    contends that the government has not shown that a firearm was connected to the offense.
    Appellant’s Opening Br. at 43-45.
    “The government bears the burden of proving possession [of a firearm] by a
    preponderance of the evidence.” United States v. Roberts, 
    980 F.2d 645
    , 647 (10th Cir.
    1992). Initially, the government need only show that the firearm was found in “physical
    proximity to the offense.” 
    Id.
     If the government meets its initial burden, the defendant
    must show that it was “clearly improbable” that the weapon was connected to the offense.
    United States v. Heckard, 
    238 F.3d 1222
    , 1233 (10th Cir. 2001).
    The government met its initial burden. A gun was found in a residence with
    drugs, scales, plastic bags, and other drug paraphernalia. Gov’t Ex. 2 at 155; II R. at 13;
    III R. at 92, 313. The proximity of the gun and drug evidence sufficed for the
    government’s threshold burden. See United States v. Roederer, 
    11 F.3d 973
    , 982-83
    (10th Cir. 1993). Because Mr. Thomas has not shown a “clear improbability” that the
    weapon was connected to the offense, we uphold the firearm enhancement.
    23
    IX.    Minor Participant
    Mr. Thomas asserts, without any elaboration or citation, that he was entitled to a
    minor-participant reduction. Appellant’s Opening Br. at 45. Because this assertion is not
    adequately explained, we decline to consider it. See Adler v. Wal-Mart Stores, Inc., 
    144 F.3d 664
    , 679 (10th Cir. 1998) (“Arguments inadequately briefed in the opening brief are
    waived.”).
    X.     Conclusion
    We affirm the conviction. But we reverse and remand for resentencing based on
    the existing record.
    24