United States v. Craig ( 2015 )


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  •                                                                                  FILED
    United States Court of Appeals
    PUBLISH                                Tenth Circuit
    UNITED STATES COURT OF APPEALS                      December 22, 2015
    Elisabeth A. Shumaker
    FOR THE TENTH CIRCUIT                            Clerk of Court
    _________________________________
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    v.                                                          No. 14-3185
    CHRISTOPHER CRAIG,
    Defendant - Appellant.
    _________________________________
    Appeal from the United States District Court
    for the District of Kansas
    (D.C. No. 2:12-CR-20141-KHV-18)
    _________________________________
    Rick E. Bailey, Conlee, Schmidt & Emerson, L.L.P., Wichita, Kansas, for Defendant-
    Appellant.
    Carrie N. Capwell, Assistant United States Attorney (Barry R. Grissom, United States
    Attorney, with her on the brief), Office of the United States Attorney, Kansas City,
    Kansas, for Plaintiff-Appellee.
    _________________________________
    Before TYMKOVICH, Chief Judge, BALDOCK and HARTZ, Circuit Judges.
    _________________________________
    BALDOCK, Circuit Judge.
    _________________________________
    In 2013, a grand jury charged Defendant Christopher Craig with three separate
    counts as part of a twenty-seven-count indictment containing nine other co-
    defendants. The first count charged Defendant with conspiring to (a) manufacture,
    possess with intent to distribute, and distribute cocaine, cocaine base, and marijuana
    in violation of 
    18 U.S.C. § 2
     and 
    21 U.S.C. §§ 841
     & 846, and (b) maintain a drug-
    involved premises in violation of 
    18 U.S.C. § 2
     and 
    21 U.S.C. §§ 846
     & 856. The
    other two counts charged Defendant with using a communication facility to commit
    this conspiracy in violation of 
    21 U.S.C. § 843
    (b). After Defendant pleaded guilty to
    these charges, the district court at sentencing calculated his total offense level as 43
    after applying a murder cross-reference under United States Sentencing Guidelines
    (U.S.S.G.) § 2D1.1(d), a leadership enhancement under U.S.S.G. § 3B1.1(a), and an
    obstruction of justice enhancement under U.S.S.G. § 3C1.1.         Combined with his
    category III criminal history, this corresponded to a sentence of life imprisonment for
    the conspiracy count and 48 months’ imprisonment for the two communications
    facility counts. Defendant now asks us to rule that the district court erred in applying
    these enhancements and imposing the life sentence on him. Exercising jurisdiction
    under 
    18 U.S.C. § 3742
    (a) and 
    28 U.S.C. § 1291
    , we affirm.
    I.
    The overarching conspiracy in which Defendant was involved operated in the
    Kansas City area and lasted from January 2006 until December 2012. Two men,
    Gregory Moore and Daniel Bryant, headed the conspiracy with the general purpose of
    distributing marijuana, cocaine, and cocaine base around the Kansas City
    metropolitan area. Defendant and others helped allocate these substances at Moore’s
    and Bryant’s direction.
    After several encounters with law enforcement officers throughout the six
    2
    years the conspiracy operated, Defendant’s most significant criminal foray came in
    August 2012 when he organized the attempted robbery of rival drug-dealer Brandon
    Campbell. He recruited two cousins, DaRyan Pryor and Arterrius Pryor, to actually
    commit the robbery.1      Defendant drove DaRyan and Arterrius to an apartment
    complex in south Kansas City, gave them guns and T-shirts to wear as face masks,
    and remained in the driver’s seat of his vehicle and watched while the two men
    attempted to rob Campbell in the parking lot of the complex. In the midst of the
    robbery attempt, Campbell drew his gun and shot DaRyan. DaRyan later died from
    his wounds.
    Defendant went to DaRyan’s mother’s residence the next day and explained to
    her, DaRyan’s stepfather, and other family members what had happened the previous
    night. He made clear that he, DaRyan, and Arterrius “went to go hit a lick,” which is
    “street slang for a robbery and commonly for drugs.”        Sent. Tr. vol. 1, 29:4–5,
    190:20–21, Aug. 20, 2014. Defendant told the family that the purpose of the “lick”
    was “to get a kilo of cocaine,” which he referred to as a “bird.” 
    Id. at 196:25, 197:5
    .
    He further admitted that he had provided the guns to DaRyan and Arterrius and had
    driven them to the apartment complex, and he also explained that although he had
    discussed the possibility of such a robbery with DaRyan for a while, he had initially
    not wanted to involve DaRyan and only did so because DaRyan “was hard up for
    money.” 
    Id.
     at 174:1–2.
    1
    To avoid confusion, we refer to DaRyan Pryor and Arterrius Pryor by their
    first names.
    3
    Defendant and DaRyan had been more than mere acquaintances: DaRyan had
    been living with Defendant for approximately two months prior to the attempted
    robbery, and during this time Defendant had been paying all of DaRyan’s living
    expenses. In exchange for Defendant’s hospitality, DaRyan had been working for
    Defendant selling marijuana.    DaRyan’s mother even alleged that DaRyan and
    Defendant may have been in the “marijuana and cocaine” business with each other.
    
    Id. at 162:11
     (emphasis added). Reflecting on the relationship between Defendant
    and DaRyan, she also stated that “when he would talk about [Defendant] . . . he was
    just like he thought [Defendant] was God, honestly. [Defendant] did everything for
    him.” 
    Id.
     at 161:23–162:1.
    Law enforcement officers eventually arrested Defendant for his involvement in
    the drug-trafficking operation, and a November 2013 grand jury charged him in a
    second superseding indictment with the conspiracy count and the two communication
    facility counts. Although this indictment charged nine other members of the drug-
    trafficking operation, it did not list either DaRyan or Arterrius as co-conspirators.
    Moreover, Defendant was not charged with the murder of DaRyan.
    Nonetheless, once Defendant pleaded guilty to the three charges against him,
    the Presentence Investigation Report (PSR) suggested the district court take
    DaRyan’s death into account when evaluating Defendant’s sentence. This suggestion
    stemmed from a cross-reference in U.S.S.G. § 2D1.1—the section of the Guidelines
    4
    that provided the applicable sentencing range for Defendant’s convictions2—that
    states, “If a victim was killed under circumstances that would constitute murder
    under 
    18 U.S.C. § 1111
     . . . apply § 2A1.1 (First Degree Murder) . . . as appropriate.”
    U.S. Sentencing Guidelines Manual § 2D1.1(d)(1) (2013).3 First Degree Murder, in
    turn, includes “[e]very murder . . . committed in the perpetration of, or attempt to
    perpetrate, any . . . robbery.” 
    18 U.S.C. § 1111
    (a) (emphasis added). Based on this
    textbook codification of the felony-murder rule, the PSR suggested the district court
    raise Defendant’s base offense level to 43 in compliance with § 2A1.1 because
    Defendant would have been responsible under 
    18 U.S.C. § 1111
     for DaRyan’s death
    during the attempted robbery. See U.S.S.G. § 2A1.1.
    In accordance with § 3B1.1(a) of the Sentencing Guidelines, the PSR further
    labeled Defendant as “an organizer or leader of a criminal activity” because he
    organized the robbery that DaRyan and Arterrius committed. U.S.S.G. § 3B1.1(a).
    The PSR therefore recommended the district court add four additional levels under
    § 3B1.1(a) to Defendant’s base offense level of 43.        U.S.S.G. § 3B1.1(a).   And
    finally, the PSR suggested the district court raise Defendant’s base offense level an
    additional two levels under § 3C1.1 for obstruction of justice. U.S.S.G. § 3C1.1.
    2
    Defendant’s three convictions were grouped together for guideline
    calculation purposes. See U.S. Sentencing Guidelines Manual § 3D1.2(d) (2013).
    This resulted in § 2D1.1 governing the base offense level for all three convictions.
    See id. § 3D1.3(b).
    3
    “The court shall use the Guidelines Manual in effect on the date that the
    defendant is sentenced.” U.S.S.G. § 1B1.11(a) (2015). As the 2013 Sentencing
    Guidelines were in effect on the day Defendant was sentenced, we utilize that edition
    of the Guidelines throughout the course of this appeal.
    5
    The basis for this recommendation originated from an event after Defendant’s arrest
    when the Government had sought a voice exemplar from Defendant pursuant to a
    court order, he had not complied, and the district court had held Defendant in
    contempt of court.
    After factoring in an additional two levels for reckless endangerment for an
    unrelated high-speed chase with police and a decrease of two levels for Defendant’s
    acceptance of responsibility, the PSR calculated Defendant’s total offense level as
    49, which it then decreased to the maximum-allowed level of 43. See U.S.S.G. Ch. 5,
    Pt. A, cmt. n.2 (“An offense level of more than 43 is to be treated as an offense level
    of 43.”). Combined with his category III criminal history, this corresponded to a
    sentence of life imprisonment for the conspiracy count and 48 months’ imprisonment
    for the communication facility counts.4
    At the sentencing hearing, Defendant objected to the PSR’s recommendations
    that the district court apply the murder cross-reference, the leadership enhancement,
    and the obstruction of justice enhancement. Regarding the murder cross-reference,
    Defendant contended that although DaRyan’s murder had taken place during the time
    the conspiracy had operated, DaRyan himself was not involved in this conspiracy and
    therefore his death could not appropriately be linked to Defendant’s conspiracy
    conviction.   Defendant also stated that “there is no evidence that this attempted
    4
    The conspiracy conviction had a statutory maximum sentence of life
    imprisonment while the communication facility counts had statutory maximum of 48
    months’ imprisonment. Thus, even though the Guidelines also recommended
    Defendant receive life in prison for the communication facility counts, the district
    court could not sentence Defendant to more than four years for these convictions.
    6
    robbery gone bad was in furtherance of the conspiracy. There’s just no evidence at
    all in that regard.” Sent. Tr. vol. 2, 319:4–7, Aug. 28, 2014. The district court did
    not buy this argument:
    THE COURT: Part of what you’re talking about doesn’t really resonate
    with me because, you know, I’ve been hearing these cases for almost 23
    years and it’s, I would say, such common knowledge that drug dealers rob
    each other to steal money and drugs and they carry weapons to execute
    robberies and to defend themselves from robberies. That it seems based on
    these facts, you could make a reasonable conclusion from the evidence
    which was presented that this robbery was part of the drug conspiracy
    activities.
    ***
    THE COURT: The [robbery’s] connection [to the drug conspiracy] is your
    client [Defendant]. I don’t know what more damning connection you could
    be asking for.
    Id. at 317:5–16, 320:24–321:1. The district court adopted the PSR’s recommendation
    and held the murder cross-reference should be applied:
    THE COURT: I think the only reasonable conclusion that you could draw
    from the evidence here is that the robbery and death did occur in connection
    with the conspiracy. It constitutes relevant conduct for purposes of the
    sentencing guidelines.
    Id. at 326:10–15.
    Defendant also based his objection to the leadership enhancement on his
    contention that no evidence connected the attempted robbery and DaRyan’s death to
    the conspiracy. But because the district court had concluded this connection did
    exist, the court likewise concluded the leadership enhancement should apply.
    Defendant further argued the obstruction of justice enhancement should not apply
    because he had purged himself of his contempt by pleading guilty. The district court
    7
    rejected this argument in light of § 3C1.1’s language that “attempt[s] to obstruct” can
    warrant the two-level enhancement, and it again adopted the PSR’s recommendation.
    Finally, Defendant argued a sentence of life imprisonment for the conspiracy
    count was substantially greater than necessary under the 
    18 U.S.C. § 3553
    (a)
    sentencing factors. The district court also dismissed this contention:
    THE COURT: [W]hy would we sentence him the same as somebody that
    did not enlist other people to commit crimes which result in death and did
    not organize or lead the conspiracy? Why would it make sense to treat him
    as if these facts didn’t exist?
    Sent. Tr. vol. 2, 344:22–345:2.
    In the end, the district court adopted the PSR’s suggested sentence in its entirety
    and sentenced Defendant to life imprisonment for the conspiracy count and 48 months’
    imprisonment to run concurrently for the communication facility counts. Defendant now
    timely appeals and argues the district court erred in applying the murder, leadership, and
    obstruction of justice enhancements. He also renews his argument from the district court
    that a sentence of life imprisonment is substantively unreasonable.5
    II.
    5
    Defendant also argued in his Opening Brief that the district court could
    subject him to a statutory maximum sentence of only 40 years’ imprisonment based
    on the amount of drugs attributed to him under the PSR. For this reason, he claimed
    the district court had violated his Sixth Amendment rights under Apprendi v. New
    Jersey, 
    530 U.S. 466
     (2000), when it applied the murder cross-reference and
    sentenced him to life imprisonment without submitting this issue to the jury. 
    Id. at 490
     (“[A]ny fact that increases the penalty for a crime beyond the prescribed
    statutory maximum must be submitted to a jury, and proved beyond a reasonable
    doubt.”). Defendant, however, expressly withdrew this argument during oral
    argument, and we therefore decline to address it.
    8
    Defendant first challenges the district court’s decision to apply the murder
    cross-reference under U.S.S.G. § 2D1.1(d)(1) based on DaRyan Pryor’s death during
    the attempted robbery of Brandon Campbell. He contends, as he did in the district
    court, that no evidence relates the attempted robbery or DaRyan’s murder to the
    drug-trafficking conspiracy to which Defendant pleaded guilty. He therefore argues
    DaRyan’s death is not “relevant conduct” to his conspiracy conviction under
    U.S.S.G. § 1B1.3, and because § 1B1.3(a) mandates cross-references can be applied
    only if they first qualify as relevant conduct, he argues the district court could not
    apply the murder cross-reference from § 2D1.1(d)(1).          Because we conclude a
    preponderance of the evidence connects DaRyan’s death with the drug-trafficking
    conspiracy, we hold the district court did not err in applying the murder cross-
    reference.
    A.
    “When reviewing a district court’s application of the Sentencing Guidelines,
    we review legal questions de novo and we review any factual findings for clear error,
    giving due deference to the district court’s application of the guidelines to the facts.”
    United States v. Doe, 
    398 F.3d 1254
    , 1257 (10th Cir. 2005) (quoting United States v.
    Tsosie, 
    376 F.3d 1210
    , 1217–18 (10th Cir. 2004)) (internal quotation marks omitted).
    A factual finding is clearly erroneous “only if [it] is without factual support in the
    record or if, after reviewing all the evidence, we are left with a definite and firm
    conviction that a mistake has been made.” United States v. Mullins, 
    613 F.3d 1273
    ,
    1292 (10th Cir. 2010) (quoting Aquila, Inc. v. C.W. Mining, 
    545 F.3d 1258
    , 1263
    9
    (10th Cir. 2008)) (internal quotation marks omitted).           These standards are
    straightforward in theory, but how do they apply when we must review a district
    court’s determination that an act or event is relevant conduct under § 1B1.3?
    The answer to this question has perplexed this Court.           We have been
    inconsistent in our decisions about whether a relevant conduct determination is a
    factual finding we must review for clear error or a legal conclusion we must review
    de novo. One line of cases from this Court clearly states that the determination of
    relevant conduct “is a pure factual question for which the district court must make
    specific findings to support its sentence.” United States v. Moore, 
    130 F.3d 1414
    ,
    1417 (10th Cir. 1997) (citing United States v. Crockett, 
    82 F.3d 722
    , 729–30 (7th Cir.
    1996)); see also, e.g., United States v. Keifer, 
    198 F.3d 798
    , 801 (10th Cir. 1999);
    United States v. Cuthbertson, 
    138 F.3d 1325
    , 1326 (10th Cir. 1998); United States v.
    Richards, 
    27 F.3d 465
    , 468 (10th Cir. 1994); United States v. Washington, 
    11 F.3d 1510
    , 1517 (10th Cir. 1993). Alternatively, another line of decisions has concluded
    we must “review the ultimate determination of relevant conduct de novo.” United
    States v. Caldwell, 
    585 F.3d 1347
    , 1350 (10th Cir. 2009); see also, e.g., United States
    v. Irvin, 
    682 F.3d 1254
    , 1277 n.20 (10th Cir. 2012); United States v. Damato, 
    672 F.3d 832
    , 838 (10th Cir. 2012); United States v. Egbert, 
    562 F.3d 1092
    , 1096–97
    (10th Cir. 2009); United States v. Osborne, 
    332 F.3d 1307
    , 1311 (10th Cir. 2003);
    United States v. Tran, 
    285 F.3d 934
    , 938 (10th Cir. 2002); United States v. Svacina,
    
    137 F.3d 1179
    , 1182 (10th Cir. 1998); United States v. Slater, 
    971 F.2d 626
    , 638
    (10th Cir. 1992).
    10
    Today we need not solve this intra-circuit split, which has evolved over the
    course of more than two decades in a wide variety of factual and legal contexts.
    Instead, we give Defendant the benefit of the doubt and assume for the purposes of
    this appeal that a district court’s ultimate determination of relevant conduct is a legal
    conclusion we review de novo. Even under this assumption, however, we must still
    review for clear error the district court’s factual findings supporting its determination
    of relevant conduct. Caldwell, 
    585 F.3d at
    1349–50. As a final point, relevant
    conduct must be proven by only a preponderance of the evidence. See Damato, 
    672 F.3d at
    847 (citing United States v. Fortier, 
    180 F.3d 1217
    , 1225 (10th Cir. 1999));
    see also United States v. Watts, 
    519 U.S. 148
    , 157 (1997).
    B.
    The question whether DaRyan’s murder was relevant conduct to Defendant’s
    conviction for the drug-trafficking conspiracy begins with U.S.S.G. § 1B1.3(a),
    which outlines the circumstances that determine relevant conduct:
    [C]ross references in Chapter Two . . . shall be determined on the basis
    of the following:
    (1)    (A)    all acts and omissions committed, aided, abetted,
    counseled, commanded, induced, procured, or willfully
    caused by the defendant . . .
    ***
    that occurred during the commission of the offense of conviction,
    in preparation for that offense, or in the course of attempting to
    avoid detection or responsibility for that offense; [and]
    ***
    (3)    all harm that resulted from the acts and omissions specified in
    subsection[] (a)(1) . . . above, and all harm that was the object of
    11
    such acts and omissions[.]
    U.S.S.G. § 1B1.3(a).      We first note the attempted robbery of Brandon
    Campbell is the “act” referred to in subsection (1)(A), and DaRyan’s death is the
    “harm that resulted” from this act under subsection (3). We also note Defendant
    “aided, abetted, . . . commanded, induced, [and] procured” this attempted robbery
    under subsection (1)(A) because he organized its commission and drove the getaway
    vehicle. Thus, as long as the attempted robbery “occurred during the commission of
    the offense of conviction”—the underlying conspiracy—DaRyan’s murder will count
    as relevant conduct under subsection (3) and can be used to elevate Defendant’s
    sentence.6
    6
    We take this opportunity to clarify two points the parties sometimes
    overlooked or confused in their briefs. First, both parties assumed § 1B1.3(a)(1)(B),
    instead of § 1B1.3(a)(1)(A), must apply to determine whether DaRyan’s death was
    relevant conduct that could be used to lengthen Defendant’s sentence. This
    subsection states that “in the case of a jointly undertaken criminal activity (a criminal
    plan, scheme, endeavor, or enterprise undertaken by the defendant in concert with
    others, whether or not charged as a conspiracy),” a defendant is responsible for “all
    reasonably foreseeable acts and omissions of others in furtherance of the jointly
    undertaken criminal activity . . . that occurred during the commission of the offense
    of conviction.” U.S.S.G. § 1B1.3(a)(1)(B). Presumably, the parties zeroed in on the
    phrase “jointly undertaken criminal activity,” reasonably concluded this jointly
    undertaken criminal activity referred to the attempted robbery, and therefore assumed
    subsection (1)(B) must apply simply because a jointly undertaken criminal activity
    existed. To be sure, it may very well be § 1B1.3(a)(1)(B) could apply. See U.S.S.G.
    § 1B1.3, cmt. n.2, illus. (a)(1) (“[A] defendant may be accountable for particular
    conduct under more than one subsection of this guideline.”). But because Defendant
    had such a heavy hand in organizing the commission of the attempted robbery, we
    need not rely on subsection (1)(B), which is primarily utilized in circumstances
    where a defendant otherwise had no connection to the act at issue other than the
    jointly undertaken criminal activity of which he was a part. See, e.g., Osborne, 
    332 F.3d at 1311
    ; United States v. Gamez, 
    301 F.3d 1138
    , 1141 & n.1, 1146–47 (9th Cir.
    12
    Defendant, however, claims the attempted robbery did not “occur[] during the
    commission of the offense of conviction” because no evidence connects the
    attempted robbery to the underlying conspiracy.        But here’s what we know: (1)
    Defendant was convicted of conspiracy to manufacture, possess with intent to
    distribute, and distribute cocaine, cocaine base, and marijuana; (2) DaRyan had lived
    with Defendant for two months and worked for him selling marijuana; (3) DaRyan’s
    mother later contended that Defendant and DaRyan may even have been in the
    “marijuana and cocaine” business with each other; (4) Defendant organized a robbery
    of a rival drug-dealer with the purpose of getting a “bird,” i.e., a kilo of cocaine; and
    (5) DaRyan and Arterrius were the ones who actually committed this robbery. These
    facts lead us to two main conclusions. First, DaRyan more likely than not was a
    2002). Thus, § 1B1.3(a)(1)(A) is a more appropriate and simpler avenue for us to
    take to decide this issue, and we consequently decline to apply § 1B1.3(a)(1)(B).
    Second, the parties sometimes alluded in their briefs to the belief that the “act”
    referred to in subsections (1)(A) and (1)(B) was DaRyan’s death. But under either
    subsection, surely this act could refer to only the attempted robbery, and DaRyan’s
    death was the “harm that resulted” from this act under subsection (3). Under
    subsection (1)(A), Defendant clearly did not command, induce, procure, or do
    anything else to willfully cause the death of DaRyan—he only commanded, induced,
    procured, and willfully caused the robbery. Indeed, DaRyan’s murder in this case
    could only be reasonably classified as a type of felony murder, and like any felony
    murder, we look to the underlying felony—here, the attempted robbery—that caused
    the death to determine whether Defendant should be held responsible for it. United
    States v. Nichols, 
    169 F.3d 1255
    , 1272 (10th Cir. 1999) (“The [felony-murder]
    doctrine circumvents the normal mens rea requirements of first-degree murder and
    requires only an intent to commit the underlying felony.”). And utilizing subsection
    (1)(B) instead of subsection (1)(A) would not have somehow transformed this act so
    that it instead referred to DaRyan’s death: subsection (1)(B) states that any “act”
    must be “in furtherance of the jointly undertaken criminal activity,” and Campbell, a
    rival drug-dealer of Defendant, obviously did not shoot DaRyan with the intent to
    further the objectives of the conspiracy that Defendant was a part of. Thus, under
    either subsection, the act must refer to the attempted robbery as a matter of logic.
    13
    member of the conspiracy given he was selling marijuana on Defendant’s behalf for
    at least two months and, according to his mother, perhaps even cocaine, and the
    conspiracy centered around the sale of marijuana and cocaine. See Sent. Tr. vol. 2,
    322:7–12, Aug. 28, 2014 (“[W]e [the Government] have established that there was a
    conspiracy involving DaRyan Pryor and I’ve told the Court that, but for his death,
    DaRyan Pryor would have been charged and would be present in this case in some form
    or fashion.”).7 DaRyan’s status as a co-conspirator only helps show the attempted
    robbery was in furtherance of the underlying conspiracy because such a status
    undercuts Defendant’s argument that the robbery was a separate undertaking
    unrelated to the conspiracy.
    But DaRyan need not have been a co-conspirator at all. Our primary concern
    is not whether DaRyan was involved in the conspiracy but rather whether Defendant
    organized the robbery to further the goals of the conspiracy in which he participated.
    This leads us to our second conclusion: even assuming arguendo DaRyan was not a
    member of the conspiracy, Defendant more likely than not procured the commission
    of this robbery of another drug-dealer so he could (a) eliminate any competition to
    the drug-trafficking conspiracy and (b) sell the stolen cocaine for the benefit of the
    7
    DaRyan’s two-month living arrangement with Defendant selling the same
    drugs Defendant’s conspiracy sold may not be sufficient to prove DaRyan was guilty
    of the crime of conspiracy beyond a reasonable doubt. See, e.g., United States v.
    Small, 
    423 F.3d 1164
    , 1182–85 (10th Cir. 2005); United States v. Evans, 
    970 F.2d 663
    , 670–71, 673–74 (10th Cir. 1992). But here we are analyzing whether DaRyan
    was a co-conspirator for the purpose of finding relevant conduct under U.S.S.G.
    § 1B1.3. And for this purpose, which need be made by only a preponderance of the
    evidence, see Damato, 
    672 F.3d at 847
    , the evidence sufficiently establishes DaRyan
    was more likely than not a co-conspirator.
    14
    conspiracy. This conclusion is not without support: both this Court and other circuits
    have referenced the obvious desire drug-trafficking organizations have to further
    their own interests by eliminating or controlling the actions of rival organizations.
    See, e.g., United States v. Hutchinson, 
    573 F.3d 1011
    , 1017 (10th Cir. 2009)
    (observing that a drug-trafficking organization used violence against “rival drug
    dealers who threatened their commercial dominance of the area’s drug trade”);
    United States v. Nieto, 
    721 F.3d 357
    , 362 (5th Cir. 2013) (“As part of ensuring
    control over the drug trade in Midland–Odessa, the Aztecas require all members in
    prison to report to the local Aztecas leader once released, charge all non-Aztecas
    drug dealers a tax (or ‘cuota’), [and] rob and assault non-Aztecas dealers who do not
    pay the cuota.” (emphasis added)); United States v. Rodriguez-Reyes, 
    714 F.3d 1
    , 14
    (1st Cir. 2013) (observing that a drug-trafficking organization had murdered a rival
    drug-dealer “to eliminate competition and protect the defendants’ own drug
    trafficking activity”).
    We are thus unpersuaded by Defendant’s contention that “[t]he district court
    made an assumption, unsupported by any evidence,” Appellant’s Br. 17, when the
    court concluded it is “common knowledge that drug dealers rob each other to steal
    money and drugs and . . . carry weapons to execute robberies and to defend
    themselves from robberies.” Besides the fact that this is a common motif of drug
    dealers, the district court’s conclusion did not require, as Defendant seems to suggest,
    direct evidence through testimony or some other means that Defendant’s motivation
    in the attempted robbery was to further through violence the interests of the drug-
    15
    trafficking conspiracy to which he belonged.         Instead, “[b]ecause a criminal
    conspiracy by its very nature is usually shrouded in a further conspiracy of silence,
    the common plan or purpose must often be, and may legitimately be, proved by
    circumstantial evidence.”    Hutchinson, 
    573 F.3d at 1035
     (alteration in original)
    (emphasis added) (quoting United States v. Robertson, 
    45 F.3d 1423
    , 1442 (10th Cir.
    1995)) (internal quotation marks omitted). And this case is ripe with circumstantial
    evidence: Defendant was in a conspiracy that distributed cocaine, Defendant
    organized an attempted robbery meant to deprive another man of cocaine, and the
    man was not just a random target who happened to have cocaine but instead a rival
    drug-dealer who was likely impeding the commercial interests of Defendant’s
    organization.
    We therefore agree with the district court that a “reasonable conclusion that you
    could draw from the evidence here is that the robbery and death did occur in connection
    with the conspiracy.”   As the district court aptly (if not a bit forcefully) put it,
    Defendant’s involvement in both the robbery and the conspiracy is a “damning
    connection.”    Thus, we hold DaRyan Pryor’s death as a result of the attempted
    robbery is relevant conduct under the combination of § 1B1.3(a)(1)(A) and
    § 1B1.3(a)(3), and we consequently hold the district court did not err in utilizing the
    cross-reference under § 2D1.1(d) to raise Defendant’s base offense level to 43.8
    8
    Defendant does not argue on appeal that the circumstances surrounding
    DaRyan’s death could not constitute First Degree Murder under 
    18 U.S.C. § 1111
     or
    that the death did not otherwise meet § 2D1.1(d)(1)’s requirements. He instead relies
    solely on his contention that DaRyan’s death is not conduct relevant to his conspiracy
    16
    III.
    Defendant next contends the district court erred in applying the leadership
    enhancement under U.S.S.G. § 3B1.1(a), which mandates a four-level enhancement
    “[i]f the defendant was an organizer or leader of a criminal activity that involved five
    or more participants or was otherwise extensive.” U.S.S.G. § 3B1.1(a). Defendant’s
    argument on this issue is two-fold: First, he claims his only leadership role was his
    organization of the attempted robbery.      He therefore asserts this single event is
    insufficient to warrant the leadership enhancement because he proved in his
    discussion about the murder cross-reference under § 2D1.1(d) that the attempted
    robbery and conspiracy were not connected. Second, he contends that “even if the
    robbery attempt was linked to the drug conspiracy,” his leadership “was so limited
    and minor it could not support the four level leader/organizer enhancement imposed
    by the district court.” Appellant’s Br. 23, 26.
    We review de novo the application of a Guidelines enhancement “to the extent
    the defendant asks us to interpret the Guidelines or hold that the facts found by the
    district court are insufficient as a matter of law to warrant an enhancement.” Irvin,
    682 F.3d at 1276–77 (quoting United States v. Hamilton, 
    587 F.3d 1199
    , 1222 (10th
    Cir. 2009)). We have held, however, that the “district court’s determination that
    Defendant was an organizer or leader of a criminal activity involving five or more
    conviction under § 1B1.3. But because DaRyan’s death is in fact relevant conduct,
    we refuse to adjudicate new arguments not relied upon by Defendant and instead
    assume the district court correctly applied the other conditions § 2D1.1(d)(1) dictates.
    17
    persons” is a factual determination that we review for clear error. United States v.
    Cruz Camacho, 
    137 F.3d 1220
    , 1223–24 (10th Cir. 1998). And like cross-references,
    sentencing enhancements also need be determined by only a preponderance of the
    evidence. United States v. O’Brien, 
    560 U.S. 218
    , 224 (2010).
    As an initial matter, we hold Defendant’s first argument must fail in light of
    our conclusion that the attempted robbery was relevant conduct to Defendant’s
    underlying conspiracy conviction.     As to his second argument that Defendant’s
    leadership in the attempted robbery was so “limited and minor” as to not warrant the
    enhancement, we begin by noting that “while the criminal activity requires five or
    more participants, the leadership role need only be over ‘one or more other
    participants.’” United States v. Hamilton, 
    587 F.3d 1199
    , 1222 (10th Cir. 2009)
    (emphasis added) (quoting U.S.S.G. § 3B1.1(a), cmt. n.2). Furthermore, we have
    held that “[t]his is not a particularly onerous showing: ‘The Guideline requires only a
    conclusion that [the defendant] supervised at least one such participant; it does not
    require the court to identify specific examples.’” United States v. Gallant, 
    537 F.3d 1202
    , 1241 (10th Cir. 2008) (second alteration in original) (quoting United States v.
    Aptt, 
    354 F.3d 1269
    , 1287 (10th Cir. 2004)). We also look to specific factors in
    determining whether we should apply the leadership enhancement, including “the
    exercise of decision making authority, the nature of participation in the commission
    of the offense, the recruitment of accomplices, . . . the degree of participation in
    planning or organizing the offense, . . . and the degree of control and authority
    exercised over others.” Hamilton, 
    587 F.3d at 1222
     (ellipses in original) (quoting
    18
    U.S.S.G. § 3B1.1(a), cmt. n.4) (internal quotation marks omitted).
    The district court did not clearly err in applying the leadership enhancement,
    for the evidence presented at the sentencing hearing supports its finding that
    Defendant led one of the participants (DaRyan) of a criminal activity (the underlying
    conspiracy) that involved five or more participants (by our count, the conspiracy
    involved at least nine other participants when DaRyan is included).       Defendant
    specifically enlisted DaRyan to commit a robbery he had organized with the ultimate
    goal of advancing the operations of a drug-trafficking organization to which they
    both belonged. He then gave DaRyan a mask and a gun so he could commit the
    robbery. Defendant’s actions during its commission were also consistent with those
    of a leader and organizer: he sat and watched the attempt from the safety of his
    vehicle while the man he recruited did his bidding, much like a general would watch
    his troops wage a war. Moreover, DaRyan had been living with Defendant for at
    least two months prior to the attempted robbery while Defendant paid for all of his
    living expenses in exchange for his work selling drugs, which buttresses the district
    court’s conclusion that Defendant acted as his leader. DaRyan’s own mother even
    stated that “when [DaRyan] would talk about [Defendant] . . . he was just like he
    thought [Defendant] was God, honestly. [Defendant] did everything for him.”
    Given that a court need not make a “particularly onerous showing” to apply
    the leadership enhancement, the evidence in this case is sufficient to support a
    conclusion that Defendant was an organizer and leader over at least one other co-
    conspirator. Because the underlying conspiracy for which Defendant was convicted
    19
    involved “five or more” other co-conspirators, we hold the district court did not
    clearly     err   in   applying   the   four-level   leadership   enhancement      under
    U.S.S.G. § 3B1.1(a) to Defendant’s sentence.
    IV.
    Defendant’s third argument on appeal is that the district court erred in
    applying a two-level enhancement for obstruction of justice under U.S.S.G. § 3C1.1.
    Although he concedes (1) the district court ordered him to provide a voice exemplar,
    (2) he refused to do so, and (3) the district court held him in contempt for that
    refusal, he contends, like he did at his sentencing hearing, that “[h]is plea of
    guilty . . . eliminated any obstruction of justice his refusal to provide voice exemplars
    may have created.” Appellant’s Br. 20. He bases this argument heavily on United
    States v. Scott, 
    405 F.3d 615
     (7th Cir. 2005), where the Seventh Circuit held the
    district court erred in applying the obstruction of justice enhancement when the
    defendant “was not . . . making it more costly or otherwise more difficult for the
    government to prosecute its case against him successfully.” 
    Id. at 618
    .
    As this is an enhancement, it need be proven only by a preponderance of the
    evidence.     O’Brien, 
    560 U.S. at 224
    .     And while generally “[a] district court’s
    decision to enhance a sentence for obstruction of justice is reviewed only for clear
    error,” United States v. Gillespie, 
    452 F.3d 1183
    , 1189 (10th Cir. 2006) (citing
    United States v. McCann, 
    940 F.2d 1352
    , 1359–60 (10th Cir. 1991)), we conduct a de
    novo review “to the extent the defendant asks us to interpret the Guidelines or hold
    that the facts found by the district court are insufficient as a matter of law to warrant
    20
    an enhancement,” Irvin, 682 F.3d at 1276–77.          Because Defendant asks us to
    interpret whether § 3C1.1 allows his guilty plea to purge him of the obstruction of
    justice enhancement, de novo review is appropriate.
    U.S.S.G. § 3C1.1 states:
    If (1) the defendant willfully obstructed or impeded, or attempted to
    obstruct or impede, the administration of justice with respect to the
    investigation, prosecution, or sentencing of the instant offense of
    conviction, and (2) the obstructive conduct related to . . . the
    defendant’s offense of conviction and any relevant conduct . . . increase
    the offense level by 2 levels.
    U.S.S.G. § 3C1.1 (emphasis added).       Given § 3C1.1’s language that attempts to
    obstruct justice warrant a two-level enhancement, we recently rejected in United
    States v. Mays, 606 F. App’x 911 (10th Cir. 2015), an unpublished decision, an
    essentially identical argument to the one Defendant now makes in an essentially
    identical context to the one Defendant was in, i.e., the failure to provide a voice
    exemplar that resulted in an order holding the defendant in contempt of court. Id. at
    919–20.    Specifically, we held the obstruction of justice enhancement “clearly
    applies to attempts” whether or not the attempt was fruitless or successful. Id. at 919.
    Although this case is not binding, we find its logic sound and note that adopting its
    holding has support from other circuits. See, e.g., United States v. Carter, 
    510 F.3d 593
    , 599 (6th Cir. 2007) (“[Section] 3C1.1 applies to attempted obstruction, and [the
    defendant’s] actions satisfy the attempt provisions of § 3C1.1 regardless of whether
    any actual obstruction occurred.”); United States v. Maccado, 
    225 F.3d 766
    , 772
    (D.C. Cir. 2000) (“[T]he conclusion that a plea could erase an actual obstruction of
    21
    justice would be inconsistent with § 3C1.1’s inclusion of attempts.”).
    We further note Defendant’s reliance on Scott is unavailing, for the defendant
    in that case merely “violate[d] the conditions under which he was being detained” by
    occasionally leaving the confinement facility he had been ordered to reside in for
    personal reasons entirely unrelated to the prosecution. Scott, 
    405 F.3d at 617
    . The
    defendant in Scott, therefore, was not even attempting to make the prosecution
    against him more difficult—he was merely engaging in disrespectful conduct that
    “flout[ed] the court’s authority,” an action the Seventh Circuit held insufficient to
    warrant an obstruction of justice enhancement.       
    Id.
       Here, on the other hand,
    Defendant quite clearly did attempt to make prosecution against him more difficult:
    he intentionally refused to provide a voice exemplar the Government had a legal right
    to possess because he knew it could be used to identify his voice in incriminating
    situations. See United States v. Flanagan, 
    34 F.3d 949
    , 953 (10th Cir. 1994) (“It is
    well-settled that requiring a defendant to provide a voice exemplar for purposes of
    identification rather than for the testimonial content of the exemplar does not violate
    the Fifth Amendment’s privilege against self-incrimination.”).
    We thus hold Defendant attempted to obstruct justice when he refused to give
    his voice exemplar, his subsequent guilty plea did not purge him of this refusal, and
    the district court did not err in applying the two-level enhancement under § 3C1.1.
    V.
    Defendant’s final argument on appeal is that the life sentence the district court
    imposed on him was so severe and disproportionate as to be substantively
    22
    unreasonable.     “Substantive reasonableness involves whether the length of the
    sentence is reasonable given all the circumstances of the case in light of the factors
    set forth in 
    18 U.S.C. § 3553
    (a),” United States v. Conlan, 
    500 F.3d 1167
    , 1169 (10th
    Cir. 2007) (citing United States v. Kristl, 
    437 F.3d 1050
    , 1053 (10th Cir. 2006)), and
    we review a sentence for substantive reasonableness “under a deferential abuse-of-
    discretion standard,” United States v. Alapizco-Valenzuela, 
    546 F.3d 1208
    , 1214
    (10th Cir. 2008) (citing United States v. Huckins, 
    529 F.3d 1312
    , 1317 (10th Cir.
    2008)). “[A] within-Guidelines sentence is entitled to a presumption of substantive
    reasonableness on appeal,” Alapizco-Valenzuela, 
    546 F.3d at 1215
    , and we will “find
    an abuse of discretion only if the district court was arbitrary, capricious, whimsical,
    or manifestly unreasonable when it weighed the permissible § 3553(a) factors,”
    United States v. Sanchez-Leon, 
    764 F.3d 1248
    , 1267 (10th Cir. 2014) (quoting United
    States v. Sayad, 
    589 F.3d 1110
    , 1116, 1118 (10th Cir. 2009)) (internal quotation
    marks omitted).
    Defendant proffers two arguments that his life sentence was substantively
    unreasonable. First, instead of analyzing the reasonableness of his sentence under the
    § 3553(a) sentencing factors, he alludes back to the district court’s decision to apply
    the § 2D1.1(d) murder cross-reference and argues this decision, although allowed by
    law, was substantively unreasonable. Although he concedes the Government needed
    to prove this relevant conduct by only a preponderance of the evidence, he argues
    that “when the result of . . . utilizing a minimal standard of proof is to impose the
    most severe term of imprisonment allowed by law [a life sentence] for a conviction
    23
    for the sale of [a relatively small amount of] cocaine, the reasonableness of that
    sentence is called into serious question.” Appellant’s Br. 28–29. He asserts at least
    one other circuit has held a sentence that relied on a murder cross-reference to be
    substantively unreasonable, pointing to the First Circuit’s decision in United States v.
    Lombard, 
    72 F.3d 170
     (1st Cir. 1995). In that case, the First Circuit vacated a
    defendant’s mandatory life sentence after it determined that attributing murders to the
    defendant through a cross-reference
    operated not merely to ratchet up his prison term by some fractional
    increment, but rather wholly to remove the defendant’s sentence from
    the term-of-years continuum and transform it into a life sentence
    without the prospect of parole. That punishment represents the second
    most severe penalty known to the law. . . . [T]he enhancement at issue
    not only increased the duration of [the defendant’s] sentence, but placed
    his punishment on an entirely different order of severity.
    
    Id. at 178
     (second alteration in original) (citations omitted) (internal quotation marks
    omitted).
    But Lombard is distinguishable on at least two significant grounds. First, that
    case was decided before the Supreme Court’s decision in United States v. Booker,
    
    543 U.S. 220
     (2005), during a time when the Sentencing Guidelines were mandatory.
    After ruling the district court had the authority to grant the defendant a downward
    departure and was not obligated to impose a mandatory life sentence on him, the First
    Circuit remanded the case to the district court to decide whether a downward
    departure was warranted. See Lombard, 
    72 F.3d at 172
     (“We vacate the life sentence
    and remand for a determination of whether a downward departure might be warranted
    in the unique circumstances here.” (emphasis added)). The court did not hold, as
    24
    Defendant would have us read the case, that it was substantively unreasonable to
    impose a discretionary life sentence from a murder cross-reference on the defendant,
    but instead only held that a mandatory life sentence was inappropriate. 
    Id. at 186
    (noting that the court was concerned with Guideline cross-references imposing life
    sentences “where the judge is seemingly mandated to impose that sentence”
    (emphasis added)).
    Second, the district court that originally sentenced the defendant in Lombard
    had wanted to depart downward but felt it did not have the authority to do so. 
    Id. at 172
     (“The sentencing judge was greatly troubled but felt as a matter of law that he
    had no authority to do otherwise under the Guidelines.”). Clearly, the district court
    in Defendant’s case did not have these same reservations and never suggested in any
    way it felt Defendant deserved a sentence less than life imprisonment. In fact, the
    district court alluded to the opposite conclusion, stating, “[W]hy would we sentence
    him the same as somebody that did not enlist other people to commit crimes which result
    in death and did not organize or lead the conspiracy? Why would it make sense to treat
    him as if these facts didn’t exist?” Lombard consequently does not offer us any real
    guidance, and because we have not otherwise held the application of a murder cross-
    reference can make a sentence substantively unreasonable and are not persuaded we
    should begin such an unprecedented trend now, we reject Defendant’s first argument
    for his contention that his life sentence is substantively unreasonable.
    Defendant invokes the § 3553(a) sentencing factors (although without
    explicitly saying so) for his second argument and argues that because (1) his adult
    25
    criminal history includes only convictions for marijuana possession and drug
    paraphernalia, (2) he has served “numerous terms of probation but has served no
    appreciable imprisonment term before this,” and (3) giving him a life sentence at his
    relatively young age of 32 “means there is no hope for rehabilitation,” a life sentence
    is “unjustly harsh.”   Appellant’s Br. 30.     But because we presume Defendant’s
    within-Guidelines sentence is substantively reasonable, Alapizco-Valenzuela, 
    546 F.3d at 1215
    , none of these facts or circumstances leave us with a firm conviction the
    district court “was arbitrary, capricious, whimsical, or manifestly unreasonable when
    it weighed the permissible § 3553(a) factors.”     Sanchez-Leon, 764 F.3d at 1267.
    Instead, we agree with the district court’s observation: why should we pretend like
    Defendant did not organize an attempted robbery that resulted in the death of a man
    over whom he had a significant amount of control and influence? We therefore hold
    the district court did not abuse its discretion in imposing a sentence of life
    imprisonment on Defendant.
    VI.
    Although Defendant Christopher Craig pleaded guilty to only drug-trafficking
    crimes, he also organized the robbery of a rival drug-dealer for the benefit of the
    conspiracy in which he was involved, recruited two men to commit the robbery, gave
    the men the firearms necessary to perpetrate this crime, and oversaw the attempt from
    the safety of his car while one of the men—a man who we are told looked up to him
    as God Himself—was shot and killed. Even though Defendant asserts he “would
    have went to court [to] try to have the jury decide [his] fate” if he “would have
    26
    known [he] was going to end up with life with just the sentencing,” Sent. Tr. vol. 2,
    355:18–21, Aug. 28, 2014, the district court had the authority to consider this
    conduct in imposing a sentence on Defendant under U.S.S.G. § 2D1.1(d). The court
    also did not err in applying the four-level leadership enhancement under § 3B1.1(a)
    or the two-level obstruction of justice enhancement under § 3C1.1, and Defendant’s
    sentence of life in prison was not substantively unreasonable. The district court’s
    judgment is therefore
    AFFIRMED.
    27