United States v. Kielan Franklin ( 2021 )


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  •                   FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,             No. 20-30136
    Plaintiff-Appellee,
    D.C. No.
    v.                   6:19-cr-00006-SEH-1
    KIELAN BRETT FRANKLIN,
    Defendant-Appellant.            OPINION
    Appeal from the United States District Court
    for the District of Montana
    Sam E. Haddon, District Judge, Presiding
    Argued and Submitted May 4, 2021
    Seattle, Washington
    Filed November 23, 2021
    Before: Danny J. Boggs,* Marsha S. Berzon, and
    Mary H. Murguia, Circuit Judges.
    Opinion by Judge Boggs;
    Concurrence by Judge Berzon
    2                 UNITED STATES V. FRANKLIN
    SUMMARY *
    Criminal
    The panel affirmed a criminal judgment in a case in
    which Kielan Frankin pleaded guilty to aiding and abetting
    the possession of a firearm in furtherance of a crime of
    violence, in violation of 
    18 U.S.C. §§ 924
    (c)(1)(A)(i)–(ii)
    and 2, and robbery affecting interstate commerce (Hobbs
    Act robbery) in violation of 
    18 U.S.C. § 1951
    (a).
    The panel wrote that, as Franklin conceded, binding
    precedent forecloses his contention that Hobbs Act robbery
    is not categorically a crime of violence under 
    18 U.S.C. § 924
    (c)(3)(A).
    Franklin contended that the district court violated his
    due-process rights at sentencing by relying on his
    codefendants’ unsworn hearsay statements, which accused
    him of trying to influence their testimony, in imposing an
    obstruction-of-justice enhancement. As this court had not
    clearly enunciated the standard for reviewing a district
    court’s determination of whether coconspirator hearsay is
    unreliable, the panel took the opportunity to clarify it. After
    examining the development of the minimal-indicia-of-
    reliability doctrine over the last half-century, the panel
    concluded that there are two distinct questions that this court
    answers in examining a hearsay statement at sentencing:
    (1) whether the statement is “procedurally reliable” and
    (2) whether the statement is “substantively reliable.” If the
    court answers either question in the affirmative, then the
    *
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    UNITED STATES V. FRANKLIN                      3
    statement may be considered at sentencing. The panel wrote
    that a determination of procedural reliability—that the
    hearsay in question does not put the burden on the defendant
    to prove a negative and that the defendant has adequate
    opportunity to confront corroborative evidence of the
    hearsay—is an essentially legal question reviewed de novo.
    A determination of substantive reliability—whether hearsay
    statements admitted at sentencing are from reliable sources
    or are consistent enough with one another to indicate their
    probable truth—is an essentially factual question reviewed
    for clear error. The panel wrote that this is a disjunctive test:
    so long as each hearsay statement offered by the government
    at sentencing is either procedurally reliable or substantively
    reliable, due process is not offended.
    The panel applied that framework to this case.
    Reviewing procedural reliability de novo, the panel
    concluded that the government provided enough specifics so
    that Franklin was not put to the burden of proving that the
    enhancement did not apply, and that there were adequate
    procedural opportunities for Franklin to challenge the
    extrinsic, nonhearsay evidence corroborating codefendant
    Gerald Hiler’s hearsay statements. Perceiving no error in the
    district court’s conclusion that this evidence sufficiently
    corroborated Hiler’s statements, the panel concluded that the
    admission of those statements at sentencing did not deprive
    Franklin of due process. As to substantive reliability, the
    panel considered the government’s argument that Hiler’s
    and codefendant Morgan Pitsch’s hearsay statements
    corroborate each other enough to be admissible at
    sentencing. The panel concluded that the district court did
    not clearly err in implicitly finding the two coconspirators’
    statements to corroborate each other enough to be
    substantively reliable, and that their admission at sentencing
    thus did not violate due process.
    4               UNITED STATES V. FRANKLIN
    Judge Berzon concurred in the judgment, agreeing that
    the district court did not err in relying on hearsay statements
    from Hiler and Pitsch as the basis for an obstruction-of-
    justice enhancement. She disagreed that this court has
    developed a disjunctive test under which a hearsay statement
    may form the basis of a defendant’s sentence if it is either
    “procedurally reliable” or “substantively reliable.” She
    reads this court’s cases as requiring, at a minimum,
    substantive reliability.
    COUNSEL
    Dwight J. Schulte (argued), Schulte Law Firm P.C.,
    Missoula, Montana, for Defendant-Appellant.
    Timothy J. Racicot (argued) and Julie R. Patten, Assistant
    United States Attorneys; Leif M. Johnson, Acting United
    States Attorney; United States Attorney’s Office, Billings,
    Montana; for Plaintiff-Appellee.
    OPINION
    BOGGS, Circuit Judge:
    Kielan Franklin pleaded guilty to one count of aiding and
    abetting the possession of a firearm in furtherance of a crime
    of violence, in violation of 
    18 U.S.C. §§ 924
    (c)(1)(A)(i)–(ii)
    and 2, and one count of robbery affecting interstate
    commerce (also called “Hobbs Act robbery”), in violation of
    
    18 U.S.C. § 1951
    (a). Appealing his conviction on the
    firearm charge, he argues that Hobbs Act robbery is not
    categorically a crime of violence under 18 U.S.C.
    UNITED STATES V. FRANKLIN                       5
    § 924(c)(3)(A). He also appeals his sentence, contending
    that the district court relied on hearsay evidence so lacking
    in indicia of reliability that the court violated his due-process
    rights. Exercising jurisdiction under 
    18 U.S.C. § 3742
    (a)(1)
    and 
    28 U.S.C. § 1291
    , we affirm.
    I. Background
    A. Events Leading Up to the Robbery
    Kielan Franklin and Arielle Cowser were an unmarried
    couple who had one child together. They both used heroin.
    While living in Helena, Montana, they developed a
    relationship with B.G. and S.G. (the “victims”), a married
    couple who also used heroin.
    In March 2019, Mr. Franklin gave the victims $1,200 to
    go to Spokane, Washington, and buy an “ounce,” meaning
    twenty-four grams, of heroin. 1 But the price of heroin had
    increased, and the money would buy only twenty grams.
    During the trip, Mr. Franklin and Ms. Cowser frequently
    texted and called the victims using Ms. Cowser’s phone to
    get status updates, but—losing patience—the victims
    eventually stopped responding. It took longer than
    Mr. Franklin had expected for the victims to return from
    Spokane, partially because of heavy snow and partially
    because B.G. had a habit of doing tasks slowly. The victims
    also testified that they had sampled some of the heroin before
    their return. When the victims finally returned, B.G.,
    believing he was eight grams shy of an ounce, tried to “cut”
    the heroin—that is, add sugar to it—to make twenty-eight
    1
    We note that, although a customary American ounce converts to
    about 28.35 grams in the metric system, an “ounce” apparently means
    only 24 grams in the heroin trade.
    6                 UNITED STATES V. FRANKLIN
    grams. B.G. had little experience in cutting heroin and did a
    poor job of it.
    Already upset by the victims’ lack of communication,
    Mr. Franklin went to the victims’ house; Ms. Cowser went
    with him. Mr. Franklin became even more upset after he
    found that the quality of the heroin was much worse than he
    had expected—heavily diluted and poorly blended with the
    sugar. Mr. Franklin told the victims that they owed him
    double his money back. After leaving, Mr. Franklin
    continued to text the victims, his messages becoming
    increasingly threatening.
    B. The Robbery 2
    On the morning of March 8, 2019, Mr. Franklin,
    Ms. Cowser, and Gerald Hiler and Morgan Pitsch (the two
    other codefendants in this case) were at the house of Corissa
    Soltis. At some point, Mr. Franklin and Ms. Cowser had
    texted Mr. Hiler “about going out and making a collection
    on these people.” Mr. Franklin, still upset about the missing
    heroin and money, asked Mr. Pitsch to “go over to a house
    with him” to get either the drugs or the money. The four left
    Ms. Soltis’s house in Mr. Franklin’s Jeep.
    While they drove, Mr. Franklin told the other three his
    plan to rob the victims. Ms. Cowser’s job was to enter the
    victims’ house first and leave the door unlocked for the other
    three. Mr. Hiler was armed with a silver handgun, and he
    was to act as the “muscle,” the most aggressive of the three.
    2
    We recount the facts as presented by the government. Ms. Cowser
    presented a different version of these events at trial in her case. We
    resolve Ms. Cowser’s appeal in a memorandum filed simultaneously
    with this opinion. United States v. Cowser, No. 20-30131 (9th Cir.
    Nov 23, 2021).
    UNITED STATES V. FRANKLIN                    7
    Mr. Pitsch was armed with both an aluminum baseball bat
    and a black pistol that Mr. Franklin had given him.
    The group dropped Ms. Cowser off outside the victims’
    house. Ms. Cowser lied to the victims, saying that she and
    Mr. Franklin had been fighting and that he had left her “in
    the middle of nowhere” on the frigid, snowy night. Over
    B.G.’s protest, S.G. let Ms. Cowser inside. A few minutes
    later, on their security cameras, the victims noticed someone
    outside. Ms. Cowser approached the front door, and B.G.
    told her: “Don’t open the door.” Before the victims could
    stop her, Ms. Cowser had let in Mr. Franklin, Mr. Hiler, and
    Mr. Pitsch.
    Ms. Cowser told the three men that the drugs were
    upstairs and advised them to make sure that the victims did
    not have their phones. Even so, S.G. discreetly called 911
    with a cell phone that she hid under a blanket. During the
    robbery, she made statements such as “I’m really, really
    scared” to alert the operator about what was happening.
    Eventually, Mr. Hiler found the phone and hung up the call.
    The four defendants decided to make a quick getaway with
    a small amount of the victims’ property—S.G.’s wedding
    rings, her phone, a purse, about $100, and about a gram of
    heroin.
    C. Proceedings Below
    Mr. Franklin and Ms. Cowser were each charged with
    one count of conspiracy to commit Hobbs Act robbery, in
    violation of 
    18 U.S.C. § 1951
    (a); one count of Hobbs Act
    robbery, in violation of 
    18 U.S.C. §§ 1951
    (a), 2; and one
    count of possession of a firearm in furtherance of a crime of
    violence, in violation of 
    18 U.S.C. §§ 924
    (c)(1)(A), 2.
    Mr. Hiler and Mr. Pitsch were also charged in connection
    with the robbery. The grand jury also alleged that the firearm
    8                   UNITED STATES V. FRANKLIN
    in the third count had been brandished. If proved at trial, that
    fact would subject each defendant to a mandatory minimum
    sentence of seven years consecutive to any other sentence
    imposed. 
    18 U.S.C. § 924
    (c)(1)(A)(ii).
    Mr. Franklin moved to dismiss the firearm count against
    him. He argued that neither the conspiracy charge nor the
    substantive robbery charge, either on its own or under an
    aiding-and-abetting theory or Pinkerton-liability theory, 3
    was a crime of violence under § 924(c). The district court
    denied the motion.
    Mr. Franklin and Ms. Cowser both initially intended to
    try their cases to a jury, while Mr. Hiler and Mr. Pitsch
    entered into plea agreements. Shortly after the district court
    accepted those guilty pleas, Mr. Franklin also entered into a
    plea agreement, admitting guilt to the substantive robbery
    count and the firearm-possession count.
    But during his change-of-plea hearing, when asked to
    admit to the factual basis the government had proposed,
    Mr. Franklin balked. He instead maintained, under oath, that
    he had only wanted to talk to the victims to get his money
    back from them. Mr. Franklin asserted that he had first sent
    Ms. Cowser into the house to try to talk with the victims.
    Then, after telling Mr. Hiler and Mr. Pitsch to stay in the car,
    Mr. Franklin went to the house himself. Mr. Franklin
    claimed that he did not know that the other two codefendants
    had been armed and that they had disobeyed him by running
    into the house about a minute later, waving their guns.
    Mr. Franklin also claimed not to have known that anyone
    had stolen anything until after the four had all returned to
    Mr. Franklin’s Jeep. In light of these contentions, the court
    3
    See generally Pinkerton v. United States, 
    328 U.S. 640
     (1946).
    UNITED STATES V. FRANKLIN                    9
    rejected the plea agreement, and Mr. Franklin pleaded not
    guilty.
    In November 2019, shortly after the abortive plea
    hearing, Mr. Hiler met with FBI Special Agent Jason Bowen
    for an in-person interview. At that interview, he told Special
    Agent Bowen that Mr. Franklin had sent him a note (which
    the jail staff would provide to Special Agent Bowen). The
    note said, in part:
    Now that I know you have plead [sic] out I
    want to respectfully request your help. . . .
    All I need from you is to state the truth[.]
    1. I never asked you guys to rob anyone
    2. I didn’t know there were guns on anyone
    3. I said to stay in the car so I could talk to
    homeboy
    4. Curly had his own peice [sic] and I had
    nothing to do with it. He got it before the
    alleged incident.
    The note’s author was also aware that “Curly” (a nickname
    for Mr. Pitsch, according to Mr. Hiler) had been
    “squawking”—talking to the government about the robbery
    in this case.
    Mr. Hiler later told Special Agent Bowen that he had
    been assaulted by two other inmates after telling the
    government about the note. The attackers told Mr. Hiler that
    Mr. Franklin had told them to “slap [him] around.” Mr. Hiler
    sustained “[v]ery minor injuries” to the inside of his mouth
    as a result.
    10              UNITED STATES V. FRANKLIN
    Mr. Hiler also said that he had written a response note to
    Mr. Franklin. In that response, which he had written “to get
    [Mr. Franklin] off of his back,” Mr. Hiler wrote that the
    government had been threatening to rescind his plea
    agreement. At some point, Mr. Hiler gave a copy of his
    response note to Special Agent Bowen. The record is not
    clear as to when or even whether Mr. Hiler sent the response
    note to Mr. Franklin, when Mr. Hiler gave Special Agent
    Bowen a copy of the response note, or whether the copy that
    Special Agent Bowen received was the original or a
    duplicate.
    During an in-person interview, Mr. Pitsch told Special
    Agent Bowen that Mr. Franklin had also contacted him.
    Mr. Franklin had warned him that “he would be on paper,
    and that he should be careful.” Interpreting Mr. Franklin’s
    statement as a threat that he would be branded as a snitch,
    Mr. Pitsch asked for a transfer to a different detention
    facility.
    Based on these reports from Mr. Hiler and Mr. Pitsch,
    the government obtained a superseding indictment charging
    Mr. Franklin with two counts of witness tampering, in
    violation of 
    18 U.S.C. § 1512
    (b)(1). Mr. Franklin signed a
    second plea agreement, accepting guilt for the substantive
    robbery count and the firearm count in exchange for
    dismissal of the Hobbs Act conspiracy and the witness-
    tampering counts. In that agreement, he reserved his right to
    appeal the district court’s denial of his motion to dismiss the
    firearm count; otherwise, he waived all other appellate rights
    except for a collateral attack based on ineffective assistance
    of counsel.
    At a second change-of-plea hearing, contrary to his
    statements at the first hearing, Mr. Franklin admitted that he
    had intended to “relieve” the victims of their money, drugs,
    UNITED STATES V. FRANKLIN                        11
    or property when he went to their house and that he knew
    that both Mr. Hiler and Mr. Pitsch had guns. The district
    court accepted his guilty plea. 4
    At Mr. Franklin’s sentencing hearing, the government
    presented hearsay statements by Mr. Hiler and Mr. Pitsch,
    given secondhand through Special Agent Bowen’s
    testimony, about Mr. Franklin’s attempts to influence those
    two men’s testimony. The district court relied on those
    statements to find that an obstruction-of-justice
    enhancement applied, overruling Mr. Franklin’s objection to
    the presentence report (PSR).
    The court computed Mr. Franklin’s offense level for the
    robbery count to be twenty-two, yielding an advisory
    Guidelines range of forty-six to fifty-seven months of
    imprisonment for that count (as his criminal history category
    was II). The firearms count carried a mandatory seven-year
    (eighty-four-month) consecutive sentence. The court then
    sentenced Mr. Franklin to fifty-five months of imprisonment
    on the robbery count; combined with the mandatory
    consecutive sentence, his total prison sentence was
    139 months. Upon the government’s motion, the district
    court dismissed the remaining counts against Mr. Franklin.
    Mr. Franklin’s timely appeal followed.
    II. Hobbs Act Robbery as a Crime of Violence
    Mr. Franklin contends that Hobbs Act robbery, as
    defined in 
    18 U.S.C. § 1951
    (b)(1), is not categorically a
    4
    Ms. Cowser tried her case before a jury, which convicted her of
    conspiracy and the substantive Hobbs Act robbery count but acquitted
    her of the firearm count. The court sentenced her to twelve months and
    one day of imprisonment followed by three years of supervised release.
    12              UNITED STATES V. FRANKLIN
    crime of violence and, therefore, that the district court erred
    in denying his motion to dismiss. Our binding precedent says
    otherwise.
    Possession of a firearm “in furtherance of” a “crime of
    violence” carries additional penalties beyond the sentence
    imposed for the underlying crime. 
    18 U.S.C. § 924
    (c)(1)(A).
    In this case, because the firearm was brandished, the
    additional penalty is “a term of imprisonment of not less than
    7 years.” 
    Id.
     § 924(c)(1)(A)(ii). The statute defines “crime of
    violence” to mean a felony that either “has as an element the
    use, attempted use, or threatened use of physical force
    against the person or property of another,” id. § 924(c)(3)(A)
    (the so-called elements clause), or “that by its nature,
    involves a substantial risk that physical force against the
    person or property of another may be used in the course of
    committing the offense,” id. § 924(c)(3)(B) (the so-called
    residual clause).
    We have held that robbery under § 1951(b)(1) is
    “indisputably” a crime of violence because it contained an
    “element of ‘actual or threatened force, or violence.’” United
    States v. Mendez, 
    992 F.2d 1488
    , 1491 (9th Cir. 1993)
    (quoting 
    18 U.S.C. § 1951
    (b)(1)). We reasoned that
    conspiracy to commit Hobbs Act robbery was also a crime
    of violence under the residual clause. 
    Ibid.
     After the
    Supreme Court struck down the residual clause in United
    States v. Davis, 
    139 S. Ct. 2319
    , 2324 (2019), we took up
    again the question of whether conspiracy to commit Hobbs
    Act robbery was a crime of violence. United States v.
    Dominguez, 
    954 F.3d 1251
     (9th Cir. 2020). After
    reexamining whether the substantive crime of Hobbs Act
    robbery is a crime of violence, we reaffirmed Mendez’s
    holding. 
    Id.
     at 1260–61. We also held that attempted Hobbs
    Act robbery was a crime of violence under the elements
    UNITED STATES V. FRANKLIN                   13
    clause, leaving for another day whether conspiracy to
    commit Hobbs Act robbery likewise satisfied the elements
    clause. 
    Id.
     at 1261–62.
    Mr. Franklin concedes that Mendez and Dominguez are
    binding on us; he says he presents the issue solely to preserve
    it for potential review on certiorari. Thus, we hold that the
    district court did not err.
    III. Due-Process Violation Through Hearsay Evidence at
    Sentencing
    Mr. Franklin contends that the district court violated his
    due-process rights at sentencing by relying on his
    codefendants’ unsworn hearsay statements, which accused
    him of trying to influence their testimony, in imposing the
    obstruction-of-justice enhancement. Finding the appropriate
    standard of review unclear from our precedents, we take this
    opportunity to clarify it. Under the correct standard,
    Mr. Franklin’s challenge fails.
    A. Appeal Waiver
    Mr. Franklin begins by arguing that his appeal waiver
    does not bar our review of this issue. But the government
    does not address waiver at all, instead arguing the merits of
    his claim. We likewise proceed to the merits, the government
    having forfeited any claim of waiver it might have had.
    United States v. Garcia-Lopez, 
    309 F.3d 1121
    , 1123 (9th Cir.
    2002); United States v. Lewis, 
    798 F.2d 1250
     (9th Cir. 1986).
    B. Legal Background
    Hearsay is generally admissible in sentencing hearings,
    as neither the Confrontation Clause nor the Federal Rules of
    Evidence apply to such hearings. United States v. Petty,
    14                UNITED STATES V. FRANKLIN
    
    982 F.2d 1365
    , 1367–69 (9th Cir.), as amended by 
    992 F.2d 1015
     (9th Cir. 1993); Fed. R. Evid. 1101(d)(3).
    Nevertheless, “[d]ue process requires that some minimal
    indicia of reliability accompany a hearsay statement”
    introduced at sentencing. Petty, 
    982 F.2d at 1369
    . In
    particular, “relying on accomplice hearsay without adequate
    indicia of reliability violate[s]” due process. United States v.
    Corral, 
    172 F.3d 714
    , 716 (9th Cir. 1999). The defendant
    typically has the burden to show that disputed hearsay is
    false or unreliable. United States v. Kimball, 
    975 F.2d 563
    ,
    567 (9th Cir. 1992). 5
    But a statement by a coconspirator that inculpates the
    defendant “is inherently unreliable.” United States v.
    Huckins, 
    53 F.3d 276
    , 279 (9th Cir. 1995) (quoting Lee v.
    Illinois, 
    476 U.S. 530
    , 546 (1986)); see also United States v.
    Vera, 
    893 F.3d 689
    , 693–94 (9th Cir. 2018) (discussing
    “widespread” reluctance among the courts of appeals to rely
    on admissions of coconspirators). We presume such
    statements unreliable because the coconspirator “may very
    well have been hoping to curry favor with law enforcement
    officials by implicating his accomplice.” Huckins, 
    53 F.3d at 279
    ; see also Petty, 
    982 F.2d at
    1369–70 (approving of
    applying a rebuttable presumption of unreliability to a
    coconspirator’s proffer to the government). Although the
    “fact that a statement is self-inculpatory does make it more
    reliable,” any increased reliability is limited to the self-
    inculpatory aspects of the statement, not “collateral”
    statements about others’ guilt. Huckins, 
    53 F.3d at
    279
    The defendant must also show that the statements “demonstrably
    5
    made the basis for the sentence,” United States v. Vanderwerfhorst,
    
    576 F.3d 929
    , 935–36 (9th Cir. 2009) (quoting United States v. Ibarra,
    
    737 F.2d 825
    , 827 (9th Cir. 1984)). The government concedes that
    showing in this case.
    UNITED STATES V. FRANKLIN                   15
    (quoting Williamson v. United States, 
    512 U.S. 594
    , 600
    (1994)).
    Whether the government rebuts that presumption turns
    on whether the coconspirator’s statements have independent
    corroboration. See United States v. Berry, 
    258 F.3d 971
    , 976
    (9th Cir. 2001) (“One factor evidencing the reliability of
    hearsay statements by co-defendants is external
    consistency.”). That corroboration may come from trial
    testimony, United States v. Egge, 
    223 F.3d 1128
    , 1132–35
    (9th Cir. 2000), the defendant’s own testimony, United
    States v. Littlesun, 
    444 F.3d 1196
    , 1198–99, 1201 (9th Cir.
    2006), or even from other codefendants’ hearsay accounts,
    Berry, 
    258 F.3d at
    976–77.
    C. Standard of Review
    Reviewing our cases, we find that we have not yet clearly
    enunciated the standard by which we review a district court’s
    determination of whether coconspirator hearsay is
    unreliable. The government cites United States v. Ayers,
    
    924 F.2d 1468
    , 1481 (9th Cir. 1991), for the proposition that
    we review for abuse of discretion. Indeed, we have said
    “[c]onsideration of evidence outside the record of conviction
    for sentencing purposes is reviewed for an abuse of
    discretion,” and “[r]eliance on materially false or unreliable
    information is an abuse of discretion.” 
    Ibid.
    We have also said, in a general way, that “[a] district
    court abuses its discretion when it makes an error of law,
    when it rests its decision on clearly erroneous findings of
    fact, or when we are left with ‘a definite and firm conviction
    that the district court committed a clear error of judgment.’”
    United States v. 4.85 Acres of Land, More or Less, 
    546 F.3d 613
    , 617 (9th Cir. 2008) (quoting United States v. Hinkson,
    
    526 F.3d 1262
    , 1277 (9th Cir. 2008), vacated, 
    547 F.3d 993
    16              UNITED STATES V. FRANKLIN
    (9th Cir. 2008) (en banc) (mem.)). We have explicated that
    definition further, in the context of granting a new trial, in
    our en banc opinion in Hinkson:
    [I]f the district court’s application of fact to
    law “requires an inquiry that is essentially
    factual,” we review it as if it were a factual
    finding; if the district court’s application of
    fact to law requires reference to “the values
    that animate legal principles,” we review it as
    if it were a legal finding.
    United States v. Hinkson, 
    585 F.3d 1247
    , 1259 (9th Cir.
    2009) (en banc) (quoting United States v. McConney,
    
    728 F.2d 1195
    , 1202 (9th Cir. 1984) (en banc), abrogated in
    part by Pierce v. Underwood, 
    487 U.S. 552
    , 557–63 (1988)).
    That is to say, we review an essentially factual finding for
    clear error and an essentially legal finding de novo. 
    Id.
    at 1259–60.
    An essentially factual finding is one “requir[ing] an
    inquiry . . . that is founded ‘on the application of the fact-
    finding tribunal’s experience with the mainsprings of human
    conduct.’” Id. at 1259 (quoting McConney, 
    728 F.2d at 1202
    ). Examples in Hinkson of essentially factual findings
    include determinations of “motive, intent, and negligence.”
    
    Id. at 1260
    .
    By way of contrast, “questions such as whether
    defendants’ conduct constituted a conspiracy in violation of
    the Sherman Act,” “questions that implicate constitutional
    rights,” and “the meaning of due diligence or the conceptual
    basis for granting new trials” are questions that “require[] us
    to consider legal concepts in the mix of fact and law and to
    exercise judgment about the values that animate legal
    principles.” 
    Id.
     at 1259–60 (quoting McConney, 728 F.2d
    UNITED STATES V. FRANKLIN                   17
    at 1202). These are essentially legal questions on which the
    district court receives no deference. 
    Id. at 1260
    .
    To decide whether we have a factual or legal question
    before us in Mr. Franklin’s case, we consider the history and
    application of the minimal-indicia-of-reliability doctrine in
    our case law.
    1. Origin and Early Development
    The origin of the rule that evidence against a defendant
    in a sentencing hearing must bear sufficient indicia of
    reliability is Townsend v. Burke, 
    334 U.S. 736
     (1948). There,
    a pro se criminal defendant had been “sentenced on the basis
    of assumptions concerning his criminal record which were
    materially untrue.” 
    Id. at 741
    . One of the charges relied upon
    by the sentencing court had been dismissed, and the
    defendant had been acquitted of two others. 
    Id. at 740
    .
    Although the sentence had been “within the limits set by
    statute” and “its severity would not be grounds for relief,” it
    was “the careless or designed pronouncement of sentence on
    a foundation so extensively and materially false, which the
    prisoner had no opportunity to correct by the services which
    counsel would provide, that render[ed] the proceedings
    lacking in due process.” 
    Id. at 741
    .
    We applied and extended Townsend in United States v.
    Weston, 
    448 F.2d 626
     (9th Cir. 1971), holding that the
    district court’s reliance on not just materially false but also
    unreliable information violated due process. (See infra
    pp. 22–24 for more discussion of Weston.)
    In United States v. Ibarra, 
    737 F.2d 825
     (9th Cir. 1984),
    we attempted to clarify the meaning of “false or unreliable”
    by defining it to mean lacking in “some minimal indicium of
    reliability beyond mere allegation.” 
    Id. at 827
     (quoting
    18              UNITED STATES V. FRANKLIN
    United States v. Baylin, 
    696 F.2d 1030
    , 1040 (3d Cir. 1982)
    (construing Weston, 
    448 F.2d at
    633–34)).
    Ibarra also stated that “[w]e review a sentence for abuse
    of discretion if [the] defendant can show that the district
    court relied on information that should not have been
    considered during the sentencing phase.” 
    737 F.2d at
    826–
    27 (citations omitted). That statement expressed the
    prevailing standard of review before the introduction of the
    Sentencing Guidelines, which came about shortly after we
    decided Ibarra. See, e.g., United States v. Wilson, 
    900 F.2d 1350
    , 1354 (9th Cir. 1990) (“Prior to the Guidelines’
    promulgation, . . . district courts employed a gestalt
    approach to sentencing where a single factual determination
    rarely had a sufficiently significant impact on the overall
    sentence to warrant an appeal.”); United States v. Sanchez-
    Murillo, 
    608 F.2d 1314
    , 1319 (9th Cir. 1979) (noting that the
    “only exception to this rule is where the defendant can
    establish that information presented to the court prior to
    sentencing should not have been considered,” which would
    supply the basis for a claim of an abuse of discretion); United
    States v. Kearney, 
    560 F.2d 1358
    , 1369 (9th Cir. 1977) (“A
    federal trial judge has wide discretion in imposing sentence,
    and where . . . the sentence pronounced is within statutorily-
    prescribed limits, it is generally not subject to review.”).
    2. Effect of the Sentencing Guidelines and Booker
    With the advent of the Guidelines, which were binding
    until United States v. Booker, 
    543 U.S. 220
     (2005), made
    them advisory, district courts no longer exercised traditional
    sentencing discretion, adjusting the weights of sentencing
    factors “to reflect the differences in the relative certainty of
    information on which the sentences [we]re based.” Wilson,
    
    900 F.2d at 1352
     (quoting United States v. Davis, 
    715 F. Supp. 1473
    , 1477 (C.D. Cal. 1989), aff’d in part and vacated
    UNITED STATES V. FRANKLIN                     19
    in part, 
    960 F.2d 820
     (9th Cir. 1992)). Instead, they had to
    “‘[d]etermine the base offense level and apply any
    appropriate specific offense characteristics’ and
    ‘adjustments as appropriate related to victim, role, and
    obstruction of justice.’” 
    Ibid.
     (alteration in original) (quoting
    U.S.S.G. § 1B1.1(b)–(c), (e)–(f)). We interpreted
    “appropriate” to include the due-process requirement that
    the court “apply only those factors for which sufficiently
    reliable information exists.” Ibid. But we held that
    “[d]etermining that information is not materially false does
    not require any type of heightened scrutiny. It is enough that
    the sentencing judge is convinced that the disputed fact, as
    alleged, is true.” Id. at 1353 (quoting United States v.
    McDowell, 
    888 F.2d 285
    , 291 (3d Cir. 1989)). And proof by
    a preponderance of the evidence was sufficient, we held:
    [A] defendant’s due process right to ensure
    the reliability of information used at
    sentencing includes the requirement that facts
    underlying sentencing factors be proved
    according to a specified standard of
    proof. . . .
    We hold . . . that district courts are
    constitutionally required to make factual
    determinations underlying application of the
    Guidelines by at least a preponderance of the
    evidence. As so interpreted, the Guidelines
    do not violate due process.
    Id. at 1354. That was perhaps our clearest statement tying
    reliability of sentencing evidence to the sentencing court’s
    factfinding function.
    20              UNITED STATES V. FRANKLIN
    But we still did not describe our review of reliability
    determinations as clear-error review. Rather, in FTC v.
    American National Cellular, 
    868 F.2d 315
    , 322 (9th Cir.
    1989), we looked to a pre-Guidelines case, United States v.
    Larios, 
    640 F.2d 938
    , 942 (9th Cir. 1981), in which we had
    stated the prevailing view that “[j]udges are given very broad
    discretion to consider information from a wide variety of
    sources when sentencing because it is important for the
    sentencing judge to be able to fashion sentences properly . . .
    [for] individual defendants.” Without any analysis, we
    repeated that “[a] district court’s consideration of
    information outside the record of conviction for sentencing
    purposes is reviewed for an abuse of discretion.” Am. Nat’l
    Cellular, 
    868 F.2d at 322
    . We then said that “[w]e will find
    an abuse of discretion if the defendant shows that the district
    court relied on materially false or unreliable information,”
    
    ibid.
     (citing United States v. Messer, 
    785 F.2d 832
    , 834 (9th
    Cir. 1986)), but we gave no separate instructions for how to
    determine if a defendant made such a showing (and neither
    did Messer). We have since repeated this “abuse of
    discretion” language but never explicitly defined what it
    means in this context. See, e.g., Ayers, 
    924 F.2d at
    1481
    (citing Am. Nat’l Cellular, 
    868 F.2d at 322
    ); Petty, 
    982 F.2d at
    1369 (citing Ayers, 
    924 F.2d at 1481
    ); United States v.
    Hanna, 
    49 F.3d 572
    , 577 (9th Cir. 1995) (citing Petty,
    
    982 F.2d at 1369
    ).
    After Booker made the Guidelines advisory rather than
    binding, much of district courts’ traditional sentencing
    discretion was restored. But Booker did not much affect our
    review of reliability determinations. District courts still must
    correctly compute the Guidelines range as a part of the
    sentencing process. United States v. Carty, 
    520 F.3d 984
    ,
    991–93 (9th Cir. 2008) (en banc). For that computation, the
    government must still prove by at least a preponderance any
    UNITED STATES V. FRANKLIN                   21
    facts underlying a base offense level or sentence
    enhancement. United States v. Pike, 
    473 F.3d 1053
    , 1057
    (9th Cir. 2007).
    We now review all sentences for an abuse of discretion,
    whether they are inside or outside the correctly computed
    Guidelines range. Carty, 
    520 F.3d at 993
    . That means
    “ensur[ing] that the district court committed no significant
    procedural error, such as . . . selecting a sentence based on
    clearly erroneous facts,” Gall v. United States, 
    552 U.S. 38
    ,
    51 (2007), and then considering the substantive
    reasonableness of a procedurally sound sentence, duly
    deferring to a district court’s finding that the 
    18 U.S.C. § 3553
    (a) factors justify any variance from the Guidelines
    range, Carty, 
    520 F.3d at 993
    . In short, the case law we built
    before Booker surrounding Guidelines determinations is still
    good law, now interwoven with additional structure for
    incorporating Booker’s remedial component.
    3. Historical Application of the Minimal-Indicia-of-
    Reliability Doctrine
    A survey of our application of the minimal-indicia-of-
    reliability doctrine over time demonstrates two overarching
    concerns that sometimes come into tension. The sentencing
    court should have as much information as possible so that it
    can effectively discharge its duty—to sentence each person
    as an individual. But there must also be sufficient procedural
    protections to allow a defendant the opportunity to question
    and refute evidence against him at sentencing. Our survey
    also reveals two separate inquiries that we have developed
    to accommodate these two concerns. The first was primarily
    an examination of the process afforded a defendant during
    sentencing. Later, we relaxed the bar on hearsay evidence at
    sentencing to allow statements that appeared substantively
    reliable, even if the defendant did not receive the same
    22              UNITED STATES V. FRANKLIN
    procedural protections in challenging them that we had
    formerly required.
    a. At First, We Were Concerned Primarily with Procedure
    i. United States v. Weston, 
    448 F.2d 626
     (9th Cir. 1971).
    In one of our first cases discussing due-process rights at
    sentencing, the defendant, convicted of trafficking heroin,
    had been sentenced to the statutory maximum of twenty
    years of imprisonment. 
    Id. at 630
    . The district court based its
    sentence on assertions by federal narcotics agents in the PSR
    that she had been “the chief supplier [of heroin] to the
    Western Washington area.” 
    Id. at 628
    . The district court,
    opining that the probation officers who had compiled the
    report were “extremely objective,” and noting that the
    defendant had not provided any “contrary factual
    information, rather than simply a vehement denial,”
    accepted the PSR as true. 
    Id. at 629
    . It advised the defendant
    that she could bring a motion later if she obtained any
    information to refute the report, to which her counsel
    responded, “I can’t conceive of what type of investigation I
    can do to come back and say that she isn’t” the “biggest
    dealer in the Western states.” 
    Ibid.
     Nevertheless, the district
    court imposed the maximum sentence.
    We vacated that sentence on appeal. Upon reviewing the
    sealed record, we observed that the PSR’s allegations came
    from a narcotics agent’s “unsworn memorandum” that
    merely “quote[d] a named informant, described only as
    ‘previously identified as a reliable cooperating individual,’
    who indicate[d]” only that the defendant was about to
    make—not that she had made—a trip to Mexico to obtain
    heroin. 
    Id. at 630
    . We found that the report “contain[ed]
    nothing to show, rather than to assert, that the information
    was reliable, or otherwise to verify the very serious charge
    UNITED STATES V. FRANKLIN                     23
    made against Weston.” 
    Ibid.
     That was “tantamount,” we
    said,
    to saying that once a defendant has been
    convicted of offense A, narcotics agents can
    say to the probation officer, and the probation
    officer can say to the judge, “We think that
    she is guilty of much more serious offense B,
    although all we have to go on is an informer’s
    report,” and the judge can then say to the
    defendant, “You say it isn’t so; prove that to
    me!” In addition to the difficulty of “proving
    a negative,” we think it a great miscarriage of
    justice to expect Weston or her attorney to
    assume the burden and expense of proving to
    the court that she is not the large scale dealer
    that the anonymous informant says that she
    is.
    
    Id. at 634
    . Thus, we held, “a sentence cannot be predicated
    on information of so little value as that here involved. A
    rational penal system must have some concern for the
    probable accuracy of the informational inputs in the
    sentencing process.” 
    Ibid.
     We remanded for a new
    sentencing hearing, directing the district court not to
    consider the information from the PSR “unless it is amplified
    by information such as to be persuasive of the validity of the
    charge there made.” 
    Ibid.
    Weston stands for the proposition that if the sentencing
    process effectively puts the burden of proof on the defendant
    to refute a damaging hearsay allegation, particularly when
    the factual basis for believing such a charge is practically
    nonexistent, that process is legally flawed. See 
    id. at 633
    .The
    district court treated as controlling the inherent credibility of
    24              UNITED STATES V. FRANKLIN
    the probation officers preparing the PSR and the agents
    interviewed for the report’s factual bases, regardless of the
    credibility of those officers’ and agents’ sources. The
    government could effectively assert anything in the PSR and
    require the defendant to refute it. Such a system is repugnant
    to due process. See 
    id. at 634
    .
    ii. United States v. Petty, 
    982 F.2d 1365
     (9th Cir. 1993).
    This was a post-Guidelines case in which the kingpin of a
    cocaine-trafficking scheme, Mr. Kessack, gave a statement
    during plea negotiations with the government. 
    Id. at 1366
    .
    Negotiations broke down, and Mr. Kessack and his
    coconspirators were convicted at trial. 
    Id. at 1367
    . After
    Mr. Kessack was sentenced, he refused to testify at the other
    defendants’ sentencing hearing, despite an order compelling
    his testimony. 
    Ibid.
     So the district court, upon the
    government’s motion, unsealed and reviewed Mr. Kessack’s
    statement. 
    Ibid.
     Mr. Kessack then made a second, sworn
    statement that “cast doubt on the accuracy and reliability of
    his first [s]tatement.” 
    Ibid.
     But the district court, after
    determining that his first statement “was corroborated by
    other evidence,” found that the conspiracy “involved more
    than 50 kilograms of cocaine” based on information in the
    first statement. It sentenced the other defendants based on
    that amount. 
    Ibid.
    We affirmed, approving the district court’s procedure of
    treating the hearsay statement as “presumptively unreliable”
    and finding that presumption rebutted upon consideration of
    other, corroborating evidence. 
    Id. at 1369
    . Indeed, we
    expressly endorsed the use of “extrinsic corroborating
    evidence to establish the reliability of hearsay . . . at
    sentencing,” including in-court witness testimony and
    admissions by members of the conspiracy. 
    Ibid.
    UNITED STATES V. FRANKLIN                   25
    Notably, the external corroborating evidence considered
    by the district court in Petty was evidence that the defendants
    could have attempted to impeach via cross-examination in
    the normal course of the hearing. Had that evidence been
    false, the defendants had the usual tools of criminal
    procedure to challenge and refute it. And, had the defendants
    successfully refuted such evidence, there would have been
    no external corroboration supporting the hearsay statement,
    and it would have been inadmissible. Thus, the district
    court’s procedure did not offend due process because, unlike
    in Weston, the burden was not on the defendants to disprove
    the government’s allegations, and the government had
    proffered sufficient evidence tending to corroborate the
    coconspirator’s hearsay statement.
    iii. United States v. Huckins, 
    53 F.3d 276
     (9th Cir. 1995).
    In Huckins, we found insufficient indicia of reliability to
    support hearsay statements by the defendant’s accomplice
    that the defendant had been armed with a gun during two
    bank robberies. 
    Id.
     at 278–79. The accomplice’s statements
    “were not made under oath, nor at trial where he could be
    cross-examined” but rather “in the context of plea
    negotiations with the government, in which [he] may very
    well have been hoping to curry favor with law enforcement
    officials.” 
    Id. at 279
    . Moreover, the part of the accomplice’s
    statements attesting that the defendant had been armed was
    collateral to the part inculpating the accomplice. 
    Ibid.
     We
    therefore removed those statements from consideration,
    leaving a single bank teller’s statement that the defendant put
    his hands in his pocket during a third robbery, which we
    found was not enough to “prove by a preponderance of the
    evidence that Huckins was armed” at any of the robberies.
    
    Ibid.
    26             UNITED STATES V. FRANKLIN
    As in Weston, in Huckins we were concerned with the
    procedural problem inherent in relying on the accomplice’s
    statements—unsworn, impossible for the defendant to cross-
    examine. We did have a substantive concern that the
    accomplice’s statement was likely not reliable. But despite
    this substantive dimension, our reliability review in Huckins
    was still essentially procedural. It was not for clear error—
    indeed, a reasonable factfinder could have credited the
    accomplice’s statements, especially combined with the bank
    teller’s observation. See Anderson v. City of Bessemer City,
    
    470 U.S. 564
    , 574 (1985) (“Where there are two permissible
    views of the evidence, the factfinder’s choice between them
    cannot be clearly erroneous.”). And we made a separate
    finding of factual error: Considering the only piece of
    sufficiently reliable evidence supporting the proposition that
    Mr. Huckins had been armed at any of the robberies (that is,
    the bank teller’s statement), we found that evidence unable
    to support that proposition by a preponderance of the
    evidence. Huckins, 
    53 F.3d at 279
    . So Huckins suggests that
    we did not treat the reliability determination as an issue of
    fact but rather as an essentially legal, procedural issue.
    It is also noteworthy that we rejected the government’s
    argument on appeal that the bank teller’s statement about
    one robbery was partially corroborative of the
    coconspirator’s statement about the other two robberies. See
    Brief for the United States at 19, Huckins, 
    53 F.3d 276
     (No.
    94-30052), 
    1994 WL 16059689
    , at *19. Instead, we agreed
    with the government’s statement in the district court that the
    bank teller’s “perception that Mr. Huckins had a gun did not
    constitute evidence that he in fact had one.” Defendant-
    Appellant’s Opening Brief at 9, Huckins, 
    53 F.3d 276
     (No.
    94-30052), 
    1994 WL 16059688
    , at *9; Huckins, 
    53 F.3d at 279
    . That foreshadowed the way in which our substantive
    UNITED STATES V. FRANKLIN                   27
    review of the reliability of a hearsay statement would come
    to the forefront of the doctrine.
    iv. United States v. Garcia-Sanchez, 
    189 F.3d 1143
     (9th
    Cir. 1999). Although we noted in Garcia-Sanchez that “[w]e
    show great deference to trial court factual determinations,
    reviewing [them] only for clear error,” 
    id. at 1148
    , we
    nevertheless vacated the district court’s sentence on the
    grounds that the evidence did not have sufficient indicia of
    reliability. Indeed, Garcia-Sanchez reads much like a replay
    of Weston. We held that the district court erred by relying
    solely on “conclusory testimony” from a case agent at the
    sentencing hearing, who stated:
    [a]s a result of interviewing Lawrence
    Bertolino, who is the principal middle person
    here in Spokane for Cipriano, [i.e.] Zavala[,]
    and Rutilio Garcia[-Sanchez]’s distribution
    of cocaine and heroin, we determined that
    cocaine was being sold anywhere from two to
    three ounces a week from the Bertolino
    residence. In addition to one to two ounces of
    heroin.
    
    Id. at 1149
     (alterations in original). In particular, the agent
    “had no first-hand knowledge of the conspiracy’s sales,”
    “did not explain how he arrived at his estimates,” “did not
    reveal the hearsay upon which he relied,” “did not produce
    the contemporaneous . . . reports of his interviews,” “was not
    cross-examined,” and “was not tested or challenged” on his
    opinion. 
    Ibid.
    The procedural defect in Garcia-Sanchez was the same
    as in Weston. Although the case agent had identified the
    source interviewed for the report, the report was nevertheless
    conclusory, not breaking down the steps of the agent’s
    28              UNITED STATES V. FRANKLIN
    analysis to show how he arrived at his conclusions. The
    defendant could do little but deny what Mr. Bertolino had
    purportedly said. Putting the burden of proof on the
    defendant violated his due-process rights, just as in Weston,
    and we reached the same conclusion (albeit without citing
    Weston).
    Thus, up to the turn of the millennium, our cases on the
    minimal-indicia-of-reliability doctrine generally treated it as
    a procedural issue, even if we also implicitly considered the
    substantive reliability of the hearsay statements at issue. The
    main concern was whether the district court unfairly put the
    burden on the defendant to produce evidence to disprove
    government allegations. Although in some cases we allowed
    corroboration by external evidence, the defendants in such
    cases had an opportunity to challenge that external evidence
    through cross-examination. The “indicia of reliability”
    flowed from the procedural mechanisms allowing the
    defendant to challenge government allegations.
    b. Later, We Began Considering Substantive Indicia of
    Reliability
    Starting in the late 1990s, we expanded our
    understanding of “minimal indicia of reliability” to include
    whether the hearsay statement itself was likely substantively
    reliable. If so, its admission at sentencing satisfied due
    process, even if the defendant did not have the opportunity
    to challenge the source or other evidence corroborating the
    source in open court.
    i. United States v. Chee, 
    110 F.3d 1489
     (9th Cir. 1997).
    Chee gives an early example of our substantive-reliability
    review. There, the defendant pleaded guilty to assaulting his
    girlfriend on an Indian reservation. 
    Id.
     at 1491–92. An FBI
    agent interviewed the girlfriend at a hospital, where she said
    UNITED STATES V. FRANKLIN                   29
    that the defendant had “forced her to get into [a] car by
    throwing her into the car, closing the door behind her, and
    quickly driving away while using the power door locks.” 
    Id. at 1491
    . She said that, after beating her and threatening to
    kill her with a gun in his car trunk, he took her to a motel
    room and raped her. 
    Ibid.
     When the defendant left the room,
    the girlfriend “called her mother, who called the police, and
    the front desk.” 
    Ibid.
     A state police officer also took a
    statement from the girlfriend at the motel and the hospital,
    and he noted that she had “many bruises, abrasions, and bite
    marks on her head, back, arms and legs.” 
    Id.
     at 1491–92. The
    district court relied on those and other hearsay statements by
    the girlfriend in sentencing the defendant, including
    applying a three-level enhancement for threatening to use a
    deadly weapon and a two-level enhancement for restraining
    his victim. 
    Id. at 1492
    .
    We held that the district court permissibly relied on the
    statements. The district court had found that the statements
    were “credible and trustworthy” at least partially “because
    they were made ‘immediately upon contact with her mother,
    with the contact by the police, and to hospital staff.’” 
    Ibid.
    We also noted that the girlfriend’s statements were
    “corroborat[ed] by other statements, including [the
    defendant]’s statement.” 
    Id. at 1493
    . Moreover, her
    statements were consistent with the state police officer’s
    description of her injuries. Thus, in Chee, we began to
    primarily consider the intrinsic reliability of the hearsay
    statement itself, albeit still in combination with external
    corroborating evidence that the defendant could challenge at
    the sentencing hearing.
    ii. United States v. Berry, 
    258 F.3d 971
     (9th Cir. 2001).
    This case established that even presumptively unreliable
    statements can permissibly corroborate one another. The
    30              UNITED STATES V. FRANKLIN
    defendant had pleaded guilty to one count of possession of
    stolen mail arising out of a scheme involving depositing
    stolen checks and using stolen credit cards. 
    Id.
     at 974–75. In
    preparing the PSR, the probation officer interviewed the
    defendant’s coconspirators, who all stated that the defendant
    had “solicited them to pass stolen and forged checks through
    their personal bank accounts” and that the defendant “would
    retain the majority of the ill-gotten proceeds despite the co-
    defendants’ frequent assumption of the greatest risks in
    perpetrating the crimes.” 
    Id. at 977
    . The defendant denied
    those allegations, instead stating that the coconspirators had
    “all solicited him to run stolen checks through their
    accounts” and that “the person who deposited the stolen
    checks into their account received between seventy and
    eighty percent of the recovered funds.” 
    Id. at 975
    . The
    district court rejected Mr. Berry’s version and relied on the
    coconspirators’ statements to impose a four-level
    leadership-role enhancement. 
    Ibid.
    We affirmed. Although the district court had not made
    express findings about the reliability of the coconspirators’
    statements, we held that reversal was not warranted because
    the “reliability of the hearsay statements [wa]s apparent from
    the record.” 
    Id. at 976
    . Citing cases from the First and
    Eleventh Circuits, we adopted the rule that “hearsay
    statements by co-defendants that are consistent with each
    other may be deemed sufficiently reliable even if such
    statements are self-serving and contrary to the testimony of
    the defendant.” 
    Id.
     at 976–77. And three coconspirators’
    statements that the defendant had directed the enterprise in
    the same manner with respect to each defendant was enough
    consistency to satisfy us that the statements had “some
    minimal indicia of reliability.” 
    Ibid.
     (quoting Petty, 
    982 F.2d at 1369
    ).
    UNITED STATES V. FRANKLIN                  31
    Thus, for the first time in Berry, we held that hearsay
    allegations denied by the defendant—and uncorroborated by
    external evidence that a defendant could challenge using the
    normal tools of criminal procedure—could support facts
    underlying sentencing enhancements. The doctrine no
    longer provided a purely procedural protection for the
    defendant. So long as the district court did not use
    substantively unreliable information to sentence the
    defendant, the defendant had received due process. That
    aligns with the goal of maximizing the amount of
    information available to the district court to “ensure[] that
    the punishment will suit not merely the offense but the
    individual defendant.” Pepper v. United States, 
    562 U.S. 476
    , 488 (2011) (quoting Wasman v. United States, 
    468 U.S. 559
    , 564 (1984)); see also 
    18 U.S.C. § 3661
    ; U.S.S.G.
    § 1B1.4.
    c. Balancing Procedural and Substantive Protections
    Following Berry, our cases continued to show some
    concern with affording the defendant procedural protections
    against coconspirator hearsay, generally in cases with no
    substantive indicia of reliability.
    i. United States v. McGowan, 
    668 F.3d 601
     (9th Cir.
    2012). In McGowan, we vacated the sentence of a prison
    guard convicted of assaulting inmates. One inmate had
    testified in a different case that he had given the defendant
    drugs to smuggle into prison, and the district court admitted
    that testimony during sentencing in transcript form. 
    Id. at 607
    . That same inmate had also given similar statements
    to FBI agents. 
    Ibid.
     The government tried to corroborate the
    inmate’s statements by noting that the inmate had known
    where the defendant’s house was located. 
    Ibid.
     Disagreeing
    with the district court, we held such knowledge to be
    insufficient corroboration, noting that the defendant had
    32             UNITED STATES V. FRANKLIN
    explained why the inmate would have known that fact: The
    inmate had been a squatter in that house before the defendant
    had bought it. 
    Id.
     at 607–08 & n.3. We also observed that
    there was no other evidence to corroborate the allegations.
    
    Id. at 608
    .
    In rejecting the inmate’s hearsay, we emphasized the
    procedural defects. Even though the inmate had testified—
    “fleetingly”—under oath in a different case, the sentencing
    judge had only the bare transcript and therefore no
    opportunity to perceive the inmate’s demeanor during that
    testimony. 
    Id. at 607
    . Moreover, the defendant had no
    opportunity to cross-examine the inmate’s testimony
    because it was in a different case, and neither did the
    defendant (nor the government) in that case have any
    incentive to cross-examine the inmate. 
    Id.
     at 607–08. Thus,
    we held, the “allegations were made under oath but absent
    any other procedural mechanism that would ensure that a
    witness with the incentive to lie was telling the truth.” 
    Id. at 608
     (emphasis added).
    ii. United States v. Pimentel-Lopez, 
    859 F.3d 1134
     (9th
    Cir. 2016). In Pimentel-Lopez, we applied the rule from
    Berry in considering the statements of a codefendant,
    Mr. Elizondo, as related through a government agent at
    sentencing. The agent testified that Mr. Elizondo had said
    that Mr. Pimentel-Lopez had directed Mr. Elizondo’s
    fiancée and her sister “to rent a house ‘to be used . . . to
    distribute drugs’” and that he had “directed two individuals
    to deposit the proceeds of the drug sales into a bank
    account.” 
    Id. at 1144
    . The fiancée had corroborated those
    allegations in a police interview before trial. 
    Ibid.
     But, at
    trial, neither the fiancée nor her sister testified that
    Mr. Pimentel-Lopez had directed them to rent any house or
    directed anyone to deposit drug proceeds. 
    Ibid.
     In fact, the
    UNITED STATES V. FRANKLIN                      33
    sister testified “that she couldn’t even communicate with
    Pimentel-Lopez because she didn’t speak Spanish.” 
    Ibid.
    Even so, the district court relied on those pretrial statements
    to enhance Mr. Pimentel-Lopez’s sentence because he
    directed his coconspirators’ behavior. 
    Id. at 1143
    .
    Because Mr. Elizondo’s “statements were not made
    under oath, nor at trial where he could be cross-examined,”
    
    id. at 1144
     (quoting Huckins, 
    53 F.3d at 279
    ), we applied the
    presumption that “a codefendant’s confession inculpating
    the accused is inherently unreliable,” 
    ibid.
     (quoting Lee,
    
    476 U.S. at 546
    ). And, following Berry, we asked whether
    external evidence corroborated Mr. Elizondo’s hearsay
    statements. 
    Ibid.
     The only external corroboration of his
    statements was another out-of-court statement by his
    fiancée. 
    Ibid.
     Recognizing that even “self-serving”
    statements can constitute minimal indicia of reliability, 
    ibid.
    (quoting Berry, 
    258 F.3d at
    976–77), we nevertheless had
    sufficient “doubt” of Mr. Elizondo’s purported statements to
    deem them uncorroborated, 
    ibid.
     For one thing, even though
    the fiancée had corroborated those hearsay statements before
    trial, she did not testify to them at trial. 
    Ibid.
     For another, the
    sister’s testimony that she could not speak Spanish made the
    proposition that Mr. Pimentel-Lopez had “directed” her to
    do something unlikely. 
    Ibid.
    Our inquiry in Pimentel-Lopez was essentially factual.
    Although we noted that the statement at issue and the
    corroborating statement were both out-of-court hearsay, the
    defendant’s inability to challenge them did not drive our
    decision. Nor could it have after Berry. Instead, contrary to
    the district court, we assigned greater weight to the
    statements given under oath in open court, even considering
    silence on some issue in court to be enough to discount an
    earlier hearsay statement. And we considered the logical
    34                 UNITED STATES V. FRANKLIN
    import of the hearsay statements and the testimony given at
    trial, inferring from the sister’s testimony that the hearsay
    statements were less likely to be true. Weighing the evidence
    and determining relative credibility are not legal questions—
    they involve “the application of the fact-finding tribunal’s
    experience with the mainsprings of human conduct.”
    Hinkson, 
    585 F.3d at 1259
     (quoting McConney, 
    728 F.2d at 1202
    ). Although we did not say so explicitly, we
    conducted clear-error review in Pimentel-Lopez, reversing
    the district court’s implicit finding that Mr. Elizondo’s
    hearsay statements were reliable. 6
    iii. United States v. Vera, 
    893 F.3d 689
     (9th Cir. 2018).
    In Vera, the government sought to prove the amount of drugs
    that the defendant brothers had sold by using the factual
    statements from twelve codefendants’ plea agreements. 
    Id. at 691, 694
    . Again applying Berry, we examined those plea
    agreements to determine whether they sufficiently
    corroborated one another. We extensively analyzed the facts
    alleged in the plea agreements. Although those allegations
    adequately established that the Veras had some part in the
    drug scheme, only four specific drug transactions were
    referenced in more than one plea agreement (out of the forty
    total transactions represented in the agreements). 
    Id.
     at 694–
    95. The plea agreements attributed none of those four
    transactions specifically to either brother. 
    Id. at 695
    .
    Although the drug quantities listed in one plea agreement
    were verified independently by DEA laboratory reports,
    neither the plea agreement nor the laboratory reports
    6
    We did use clear-error review to find the sentencing enhancement
    inappropriate, but that was because, after we threw out the hearsay
    statements, there was “no evidence” that the defendant had directed
    others. 859 F.3d at 1144. We did not cite any standard of review—not
    even abuse of discretion—of the district court’s reliability determination.
    UNITED STATES V. FRANKLIN                   35
    connected those transactions to the Veras. Ibid. We thus
    found that there was insufficient external corroboration for
    those agreements to be evidence against the brothers in their
    sentencing hearing. Ibid.
    4. Synthesizing the Case Law
    Having examined the development of the minimal-
    indicia-of-reliability doctrine over the last half-century, we
    conclude that there are two distinct questions that we answer
    in examining a hearsay statement at sentencing: (1) whether
    the statement is “procedurally reliable” and (2) whether the
    statement is “substantively reliable.” This is a disjunctive
    test: If we answer either question in the affirmative, then the
    statement may be considered at sentencing.
    First, procedural reliability. We ask whether there are
    sufficient procedural protections so that the defendant does
    not have to “prove a negative” in the face of government
    allegations. This is an essentially legal question because
    whether the defendant is in that position “implicate[s]
    constitutional rights” and requires us “to exercise judgment
    about the values that animate legal principles.” Hinkson,
    
    585 F.3d at 1260
     (citation omitted).
    Generally, if the government supports the hearsay
    statements with extrinsic evidence that the defendant can
    challenge on cross-examination, then we have found the
    process to be adequate to ensure that the defendant is not
    sentenced on the basis of unreliable or false information. See
    Petty, 
    982 F.2d at
    1366–69. The district court may then
    consider the hearsay statement under the rubric of procedural
    36                UNITED STATES V. FRANKLIN
    reliability after finding the extrinsic evidence to sufficiently
    corroborate the hearsay statement. 7 
    Ibid.
    Second, if the government offers no corroboration of a
    hearsay statement that the defendant can challenge at
    sentencing through the normal adversarial process, we
    proceed to the substantive inquiry. As our cases show,
    substantive indicia of reliability can be enough to safeguard
    the defendant’s right not to be sentenced on the basis of
    unreliable or false information. Thus, hearsay from a source
    that is self-demonstrably reliable is permissible on its own.
    See Chee, 
    110 F.3d at 1492
    . And even if the hearsay is from
    a presumptively unreliable source, such as a coconspirator,
    the government can prove its reliability by exhibiting other,
    independently obtained, consistent hearsay statements—
    even other presumptively unreliable statements, as in Berry.
    But, unlike procedural reliability, substantive reliability is an
    essentially factual issue. It requires judging whether a
    statement is probably truthful in light of all the
    circumstances—that is, “the application of the fact-finding
    tribunal’s experience with the mainsprings of human
    conduct.” Hinkson, 
    585 F.3d at 1259
     (quoting McConney,
    
    728 F.2d at 1202
    ).
    The upshot is this. A determination of procedural
    reliability—that the hearsay in question does not put the
    burden on the defendant to prove a negative and that the
    defendant has adequate opportunity to confront
    corroborative evidence of the hearsay—is an essentially
    legal question that we review de novo. A determination of
    The defendant may, of course, challenge such a finding on appeal,
    7
    and we would review that finding for clear error. See United States v.
    Hernandez, 
    105 F.3d 1330
    , 1332 (9th Cir. 1997); United States v. Miller,
    
    874 F.2d 1255
    , 1279–80 (9th Cir. 1989).
    UNITED STATES V. FRANKLIN                          37
    substantive reliability—whether hearsay statements
    admitted at sentencing are from reliable sources or are
    consistent enough with one another to indicate their probable
    truth—is an essentially factual question that we review for
    clear error. And so long as each hearsay statement offered
    by the government at sentencing is either procedurally
    reliable or substantively reliable, due process is not
    offended.
    D. Application
    Here, the government gives two reasons that the use of
    Mr. Hiler’s and Mr. Pitsch’s statements 8 at Mr. Franklin’s
    sentencing did not violate his due-process rights. One
    invokes procedural reliability; the other invokes substantive
    reliability.
    1. Procedural Reliability
    We first consider the government’s argument that
    external, nonhearsay evidence corroborates Mr. Hiler’s
    hearsay statements. The statements at issue here are (1) that
    8
    As a reminder: After Mr. Franklin’s first, failed change-of-plea
    hearing, Mr. Hiler told FBI Special Agent Bowen that he had received a
    note from Mr. Franklin. That note asked Mr. Hiler to testify at trial
    consistently with Mr. Franklin’s statements at the plea hearing. After
    disclosing the note to the government, Mr. Hiler claimed to have been
    assaulted by other inmates at Mr. Franklin’s behest, sustaining “[v]ery
    minor injuries” in his mouth. Special Agent Bowen later received a
    second note, written by Mr. Hiler as a response to Mr. Franklin “to get
    [Mr. Franklin] off of his back.”
    Separately, Mr. Pitsch told Special Agent Bowen that Mr. Franklin
    had warned him that he was going to be branded as a snitch and advised
    him to be cautious. Taking the warning as a threat, Mr. Pitsch asked for
    a transfer to a different detention facility.
    38                UNITED STATES V. FRANKLIN
    Mr. Franklin sent Mr. Hiler a note asking him to give false
    testimony and (2) that Mr. Franklin sent inmates to rough up
    Mr. Hiler after he disclosed the note to the government. We
    analyze de novo whether Mr. Franklin was required to
    “prove a negative”—whether he had adequate opportunity to
    meet external evidence at his sentencing hearing.
    Mr. Franklin did not bear the burden of disproving
    conclusory government allegations. Unlike in Weston and
    Garcia-Sanchez, the government did not use a government
    agent as a mere mouthpiece for unsourced obstruction-of-
    justice allegations. Instead, Special Agent Bowen related
    detailed, specific statements and identified the sources of
    those statements—Mr. Hiler and Mr. Pitsch. The
    government also offered extrinsic, nonhearsay evidence to
    corroborate those hearsay statements: (1) Special Agent
    Bowen’s personal observation of Mr. Hiler’s mouth injuries,
    (2) the copy of the note (purportedly from Mr. Franklin) that
    Special Agent Bowen received, and (3) the transcript of
    Mr. Franklin’s first change-of-plea hearing. 9 Combined with
    the rebuttable presumption of unreliability that we impose
    on coconspirators’ inculpatory statements, the government
    was indeed saddled with the burden to prove the obstruction
    enhancement’s applicability.
    As for opportunities to challenge the government’s
    external, nonhearsay evidence: First, Special Agent Bowen
    testified at the sentencing hearing, and Mr. Franklin cross-
    examined him. Cross-examination is the “gold standard” of
    9
    Although the latter two pieces of evidence are out-of-court
    statements, their relevance to the obstruction-of-justice enhancement
    does not come from whether the statements are true, so they are not
    hearsay. Instead, the note and transcript together are evidence that the
    author of the note is likely someone familiar with the hearing.
    UNITED STATES V. FRANKLIN                   39
    procedural reliability. Murdoch v. Castro, 
    609 F.3d 983
    ,
    1003 (9th Cir. 2010) (en banc) (Kozinski, C.J., dissenting).
    So Mr. Franklin could adequately meet Special Agent
    Bowen’s observations of Mr. Hiler’s injuries.
    Second: The copy of the note was present at the
    sentencing hearing and entered into evidence. If the note
    really had been forged, Mr. Franklin could have tried to
    challenge the note’s provenance by, for example,
    introducing an exemplar of his own handwriting or having a
    handwriting analysis expert testify to show that he had not
    written the note. Or he could have attempted to find some
    detail stated in the note that he would not have known but
    someone else (presumably whoever forged it) would have
    known. And so on. In other words, Mr. Franklin had a full
    and fair opportunity to challenge the premise that he was the
    source of the note. So he could adequately meet that
    evidence, too.
    And third: The transcript of the first plea hearing.
    Although Mr. Franklin could not reasonably dispute the
    reliability of the transcription, that is not a procedural
    problem—it is substantive. His remedy would have been to
    argue in the district court, as he does now on appeal, that the
    corroborative inference is weak—perhaps because Mr. Hiler
    had easy access to a transcript of the hearing and could have
    used it to forge the note. Cf. United States v. Matta-
    Ballesteros, 
    71 F.3d 754
    , 766–67 (9th Cir. 1995)
    (defendant’s objection—that forensic expert’s finding that
    hairs at crime scene were consistent with defendant’s did not
    prove defendant was the only person who could have left the
    hairs—went to weight, not admissibility); 
    id.
     at 768–69
    (objection to defect in chain of custody went to weight, not
    admissibility).
    40                UNITED STATES V. FRANKLIN
    Thus, there were adequate procedural opportunities for
    Mr. Franklin to challenge the extrinsic, nonhearsay evidence
    corroborating Mr. Hiler’s hearsay statements. Perceiving no
    error in the district court’s conclusion that this evidence
    sufficiently corroborated Mr. Hiler’s statements, we
    conclude that the admission of those statements at
    sentencing did not deprive Mr. Franklin of due process.
    2. Substantive Reliability
    We also consider the government’s argument that
    Mr. Hiler’s and Mr. Pitsch’s hearsay statements corroborate
    each other enough to be admissible at sentencing. Although
    the district court did not make an express finding of
    reliability, we read the court’s ruling on the obstruction-of-
    justice enhancement as making such a finding implicitly. 10
    We review it for clear error.
    And we find none. Each coconspirator reported that
    Mr. Franklin pressured him to testify a certain way—or not
    to testify—following the first change-of-plea hearing.
    Although the two accounts were not uniformly consistent, as
    was the case in Berry, they both flowed from the same
    triggering incident: Mr. Franklin’s first plea hearing. They
    shared the common premise that Mr. Franklin had a
    consistent underlying motivation: that he wanted no one to
    testify contrary to his statements at that plea hearing,
    whether to avoid a perjury charge or to potentially win an
    acquittal at trial. And Mr. Hiler’s statement that “Curly” is a
    10
    From the record: “I have reviewed this matter in its entirety,
    including the [coconspirators’] statements that appear in the presentence
    report, the testimony that was given in supplementation at the hearing
    here today, and it is my conclusion that taken as a whole, that the
    evidence, in fact, does support the obstruction of justice recommended
    by the presentence officer in the presentence report.”
    UNITED STATES V. FRANKLIN                   41
    nickname for Mr. Pitsch, combined with the note’s
    mentioning that “Curly” had been “squawking,”
    corroborates Mr. Pitsch’s statement that Mr. Franklin had
    been threatening to brand Mr. Pitsch a snitch. The district
    court therefore did not clearly err in finding the two
    coconspirators’ statements to corroborate each other enough
    to be substantively reliable. Thus, the statements’ admission
    at sentencing did not violate due process.
    IV. Conclusion
    Binding precedent forecloses Mr. Franklin’s claim that
    Hobbs Act robbery is not a crime of violence under
    
    18 U.S.C. § 924
    (c)(3)(A). And the district court did not
    abuse its discretion in considering the statements of
    Mr. Hiler and Mr. Pitsch in imposing an obstruction-of-
    justice enhancement at sentencing. The government
    provided enough specifics so that Mr. Franklin was not put
    to the burden of proving that the enhancement did not apply,
    Mr. Hiler’s statements were tied to other evidence that was
    subject to procedural tests of reliability, and the two men’s
    statements otherwise corroborated each other enough to be
    substantively reliable.
    AFFIRMED.
    BERZON, Circuit Judge, concurring in the judgment:
    I agree with the majority’s conclusion that the district
    court did not err in relying on hearsay statements from Hiler
    and Pitsch as the basis for an obstruction-of-justice
    enhancement to Franklin’s sentence. I write separately
    because my interpretation of our case law on the minimal-
    indicia-of-reliability doctrine is somewhat different from the
    42              UNITED STATES V. FRANKLIN
    majority’s. Specifically, I disagree that we have developed a
    disjunctive test under which a hearsay statement may form
    the basis for a defendant’s sentence if it is either
    “procedurally reliable” or “substantively reliable.” Majority
    op. 37. I read our cases as requiring, at a minimum,
    substantive reliability.
    I
    We have regularly stated that we “review for abuse of
    discretion the district court’s evaluation of the reliability of
    evidence at sentencing.” United States v. Vera, 
    893 F.3d 689
    ,
    692 (9th Cir. 2018); see, e.g., United States v. McGowan,
    
    668 F.3d 601
    , 606–08 (9th Cir. 2012); United States v.
    Berry, 
    258 F.3d 971
    , 976 (9th Cir. 2001); United States v.
    Chee, 
    110 F.3d 1489
    , 1492–93 (9th Cir. 1997). As the
    majority observes, however, we have not clearly explained
    how we determine whether a district court abused its
    discretion by basing a sentence on hearsay. Majority op. 15.
    The majority carefully traces the development of our
    case law in this area and demonstrates that our earlier cases
    often focused on the procedural injury to a defendant when
    the district court based a sentence on unreliable hearsay,
    while our later cases were more likely to engage in a close
    factual examination of a hearsay statement to evaluate its
    reliability. 
    Id.
     at 21–35. Based on this inquiry, the majority
    concludes that due process allows a district court to base a
    sentence on a hearsay statement if either the statement is
    “procedurally reliable,” that is, “there are sufficient
    procedural protections so that the defendant does not have to
    ‘prove a negative’ in the face of government allegations,” id.
    at 35, or the statement is “substantively reliable,” meaning,
    for example, that the statement is “from a source that is self-
    demonstrably reliable” or there is independent evidence
    corroborating it, id. at 36.
    UNITED STATES V. FRANKLIN                    43
    The majority does not point to any case in which we
    approved the district court’s reliance on a hearsay statement
    at sentencing solely because the statement was “procedurally
    reliable,” without any indicia of substantive reliability. True,
    many of our cases have rightly emphasized the procedural
    problems inherent in relying on a hearsay statement at
    sentencing that a defendant never had an opportunity to test
    by cross-examination. But these same cases also show a
    parallel concern about the substantive reliability of hearsay
    statements.
    For example, the majority points to United States v.
    Weston, 
    448 F.2d 626
     (9th Cir. 1971), as “stand[ing] for the
    proposition that if the sentencing process effectively puts the
    burden of proof on the defendant to refute a damaging
    hearsay allegation, particularly when the factual basis for
    believing such a charge is practically nonexistent, that
    process is legally flawed.” Majority op. 23. But, as the
    majority acknowledges, the reason we were concerned about
    putting the burden on the defendant in Weston to refute the
    hearsay statements in the presentence report is that we
    doubted the statements’ substantive reliability: “the factual
    basis for believing the charge was almost nil.” 
    448 F.2d at 633
    . In other words, the government had failed to produce
    substantive indicia of reliability to support the hearsay
    statements, instead leaving it to the defendant to refute them.
    We vacated the sentence and forbid the district court from
    relying on the presentence report on resentencing “unless”
    the government “amplified [it] by information such as to be
    persuasive of the validity of the charge there made”—i.e.,
    unless the government produced substantive indicia of
    reliability. 
    Id. at 634
    . We did not suggest that reviewing the
    sentencing hearing but applying the correct burden of proof
    would suffice.
    44              UNITED STATES V. FRANKLIN
    The majority proposes a single example of a case in
    which we relied on “procedural reliability” alone to approve
    the district court’s reliance on hearsay statements at
    sentencing: United States v. Petty, 
    982 F.2d 1365
     (9th Cir.
    1993). Majority op. 24–25, 35–36. But in Petty, we did not
    discuss procedural protections at all.
    Petty concluded that the district court “did not abuse its
    discretion in concluding that the [hearsay] Statement, when
    viewed in light of the corroborating evidence [introduced by
    the government], was sufficiently reliable.” 
    982 F.2d at 1369
    . The extrinsic evidence included trial testimony,
    post-arrest admissions by codefendants, and “tape recorded
    admissions of . . . one of the defendants.” 
    Id.
    The majority suggests that “the external corroborating
    evidence considered by the district court in Petty was
    evidence that the defendants could have attempted to
    impeach via cross-examination in the normal course of the
    hearing.” Majority op. at 25. Thus, the majority concludes,
    the hearsay statements were “procedurally reliable.” 
    Id.
    at 35–36.
    Although it does appear that in Petty the defendants had
    an opportunity to test some of the extrinsic evidence by
    cross-examination (such as the trial testimony), we did not
    rely on that circumstance to decide the case. Instead, we
    concluded, albeit with scant reasoning, that the extrinsic
    evidence “corroborat[ed]” the hearsay statements
    “sufficiently” to establish their substantive reliability, or at
    least that the district court did not err in so finding. 
    982 F.2d at 1369
    . If we had concluded that the extrinsic evidence did
    not corroborate the hearsay statements (as Judge Noonan, in
    dissent, suggested it did not, 
    982 F.2d at 1372
    ), I do not see
    how we could have deemed the hearsay statements reliable,
    UNITED STATES V. FRANKLIN                    45
    regardless whether the extrinsic evidence was subject to
    cross-examination.
    It may well be true that we are more likely to accept a
    hearsay statement as substantively reliable if the government
    introduces corroborating evidence that is subject to cross-
    examination. But I read our cases as consistently requiring
    at least some indicium of substantive reliability before a
    hearsay statement may form the basis of a sentence.
    Procedural protections—such as the ability to cross-examine
    evidence the government introduces to corroborate
    hearsay—are a useful adjunct, but cannot alone establish the
    reliability of a hearsay statement.
    II
    I agree with the majority that substantive reliability is an
    essentially factual issue that we review for clear error.
    Majority op. 36–37. Here, although there may be a
    procedural dimension to our inquiry, see 
    id.
     at 37–40, the
    questions whether Hiler’s and Pitsch’s statements
    corroborate each other, and whether the note purportedly
    from Franklin corroborates any of the statements, are
    essentially factual questions. Although I view the questions
    as close, I cannot say that the district court clearly erred in
    finding the statements sufficiently corroborated to be
    reliable.
    Hiler’s and Pitsch’s statements were different from each
    other: Hiler said that Franklin sent him a note asking him to
    testify to specific facts, while Pitsch said that Franklin
    warned him that what he said “would be on paper, and that
    he should be careful.” Hiler also said that after he shared
    Franklin’s note with the government, he was assaulted by
    two other inmates who told him that Franklin had told them
    to “slap [him] around.”
    46              UNITED STATES V. FRANKLIN
    On their own, these statements are only partly
    corroborative of each other. But as the majority explains,
    they are at least somewhat consistent in that they “shared the
    common premise that Mr. Franklin had a consistent
    underlying motivation: that he wanted no one to testify
    contrary to his statements at [his first] plea hearing.”
    Majority op. 40.
    The note purportedly from Franklin is corroborative of
    Hiler’s first statement and of Pitsch’s statement. According
    to Hiler, the note referred to Pitsch as “Curly.” For example,
    the note asked Hiler to testify to the fact that “Curly had his
    own peice [sic] and I had nothing to do with it.” The note
    also says, “I know you said nothing against my best interest
    and it was Son and Curly that was squaking [sic] like birds.”
    The note’s suggestion that its author believed Pitsch had
    implicated Franklin but Hiler had not provides an
    explanation for why Franklin would ask Hiler to testify to
    specific facts, but would simply warn Pitsch to watch what
    he said.
    As the majority explains, the fact that Franklin had an
    opportunity to challenge the note at his sentencing hearing
    increases its value as corroborating evidence. Majority
    op. 39. Franklin could have attempted to prove that he was
    not the author of the note in various ways—for example,
    through a handwriting analysis—but he did not.
    Given that Hiler’s and Pitsch’s statements were at least
    somewhat corroborative of each other, that the note was
    corroborative of both men’s statements, and that “Franklin
    had a full and fair opportunity to challenge the premise that
    he was the source of the note,” Majority op. 39, I cannot say
    that the district court clearly erred in finding that Hiler’s and
    Pitsch’s statements bore adequate indicia of reliability to
    UNITED STATES V. FRANKLIN                47
    supply the basis for an obstruction-of-justice enhancement.
    I therefore concur in the judgment.