United States v. Moya ( 2018 )


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  •                                                                                   FILED
    United States Court of Appeals
    UNITED STATES COURT OF APPEALS                          Tenth Circuit
    FOR THE TENTH CIRCUIT                        September 21, 2018
    _________________________________
    Elisabeth A. Shumaker
    Clerk of Court
    UNITED STATES OF AMERICA,
    Plaintiff - Appellant,
    v.                                                          No. 17-2043
    (D.C. No. 1:15-CR-01889-JCH-1)
    RAYMOND MOYA,                                                 (D.N.M.)
    Defendant - Appellee.
    _________________________________
    ORDER AND JUDGMENT*
    _________________________________
    Before TYMKOVICH, Chief Judge, MORITZ and EID, Circuit Judges.
    _________________________________
    In this interlocutory appeal, the government challenges the district court’s
    pretrial orders excluding testimony from two expert witnesses.1 We conclude that the
    district court didn’t abuse its discretion in excluding some of that testimony as a
    sanction for the government’s failure to provide proper notice of its intent to present
    that testimony at trial. But we agree with the government that the district court erred
    in ruling that admitting the remaining testimony would violate the Confrontation
    Clause. Accordingly, we affirm in part and reverse in part.
    *
    This order and judgment isn’t binding precedent, except under the doctrines
    of law of the case, res judicata, and collateral estoppel. But it may be cited for its
    persuasive value. See Fed. R. App. P. 32.1; 10th Cir. R. 32.1.
    1
    We have jurisdiction over the appeal under 18 U.S.C. § 3731. See § 3731
    (providing such jurisdiction “if the United States attorney certifies to the district
    court that the appeal is not taken for purpose of delay and that the evidence is a
    substantial proof of a fact material in the proceeding”).
    Background
    Dawn Sherwood is a certifying scientist with National Medical Services
    (NMS), a “full-service laboratory” that provides “forensic toxicological analysis of
    body fluids and tissues for drugs and intoxicants.” App. vol. 1, 282. In 2011, the New
    Mexico Office of the Medical Investigator (OMI) collected blood and urine samples
    from a deceased individual (C.W.) and submitted those samples to NMS for testing.
    Based on the results of these tests, Sherwood signed a toxicology report in which she
    indicated that C.W.’s blood and urine tested positive for various illegal substances,
    including heroin.
    Just over three years later, the government requested additional information
    from NMS about the cause of C.W.’s death. In response, forensic toxicologist Laura
    Labay reviewed Sherwood’s toxicology report, several law-enforcement investigation
    reports, and some grand-jury testimony. Based on this review, Labay concluded that
    C.W. died of a heroin overdose.
    Relying in part on that conclusion, the government charged Raymond Moya
    with distributing the heroin that caused C.W.’s death. See 21 U.S.C. § 841(b)(1)(C)
    (mandating longer sentence for distributing controlled substance “if death . . . results
    from the use of such substance”). To prove this charge, the government planned to
    introduce expert testimony about the cause of C.W.’s death.
    Under Federal Rule of Criminal Procedure 16, the government was required to
    provide Moya with notice and a summary of its expert testimony by the district
    court’s discovery deadline. And although it provided such notice for Labay, it failed
    2
    to do so for Sherwood.2 Instead, two weeks before the scheduled trial date, the
    government sought to have Sherwood testify by video. In response, Moya moved to
    exclude Sherwood’s testimony because the government failed to timely disclose that
    Sherwood would be one of its experts. See Fed. R. Crim. P. 16(d)(2)(C) (giving
    district court discretion to exclude evidence if government fails to comply with Rule
    16).
    The district court granted Moya’s motion to exclude. In doing so, it found that
    (1) the government didn’t provide any legitimate reason for its failure to timely
    disclose Sherwood’s expert testimony; (2) Moya would be prejudiced by having to
    cross-examine a new expert witness on such short notice; and (3) a continuance
    wasn’t feasible to cure this prejudice because of the parties’ and the court’s
    scheduling concerns.
    Recognizing that the exclusion of Sherwood’s testimony and report could
    impact the admissibility of some of Labay’s testimony, the government then filed a
    motion in limine seeking to present that testimony. In its motion, the government
    represented that Labay would testify, based in part on Sherwood’s report, that heroin
    caused C.W.’s death. But Moya moved to exclude Labay’s testimony as well, arguing
    that its admission would violate his rights under the Confrontation Clause. The
    district court agreed. It concluded that in the absence of Sherwood’s testimony and
    2
    The government initially suggested that it complied with Rule 16 and
    provided Moya with timely notice of its intent to present Sherwood’s testimony. But
    on appeal, the government “does not challenge” the district court’s finding that it
    failed to comply with Rule 16’s notice requirement. Aplt. Br. 18.
    3
    report, Labay’s testimony would inappropriately parrot Sherwood’s excluded
    testimony. Thus, the district court also excluded Labay’s testimony.
    The government appeals both of the district court’s orders.
    Analysis
    I.    Sherwood’s Testimony and Rule 16
    The government first argues that the district court erred by excluding
    Sherwood’s testimony as a sanction for the government’s failure to comply with Rule
    16(a)(1)(G). We review the district court’s decision to exclude this evidence for an
    abuse of discretion. United States v. Banks, 
    761 F.3d 1163
    , 1196 (10th Cir. 2014).
    Under this deferential standard of review, “we will not disturb the ruling unless it is
    arbitrary, capricious, whimsical[,] or manifestly unreasonable, or we are convinced
    that the district court made a clear error of judgment or exceeded the bounds of
    permissible choice in the circumstances.” 
    Id. at 1197
    (quoting United States v.
    Nacchio, 
    555 F.3d 1234
    , 1241 (10th Cir. 2009) (en banc)).
    Rule 16 requires the government to disclose certain information to the
    defendant, including, among other things, “a written summary of any [expert]
    testimony that the government intends to use.” Fed. R. Crim. P. 16(a)(1)(G). When a
    party fails to comply with this requirement, the court can impose any appropriate
    sanction, including granting a continuance or excluding the undisclosed evidence.
    Fed. R. Crim. P. 16(d)(2).
    In determining the appropriate sanction, a district court begins—as the district
    court did here—by considering the three Wicker factors: “(1) the reason for the delay,
    4
    including whether the non-compliant party acted in bad faith; (2) the extent of
    prejudice to the party that sought the disclosure; and (3) ‘the feasibility of curing the
    prejudice with a continuance.’” 
    Banks, 761 F.3d at 1198
    –99 (quoting United States v.
    Wicker, 
    848 F.2d 1059
    , 1061 (10th Cir. 1988)). But these three factors aren’t
    necessarily dispositive; although they should “guide the district court in its
    consideration of sanctions,” they don’t “dictate the bounds of the court’s discretion.”
    
    Id. at 1199
    (quoting 
    Wicker, 848 F.2d at 1061
    ).
    A.     Reason for Delay
    In evaluating the government’s reasons for its delayed disclosure, the district
    court first concluded that there was “no evidence of bad faith on the part of the
    [g]overnment.” App. vol. 2, 311. Indeed, Moya conceded as much, telling the district
    court, “I know that there is not bad faith here.” App. vol. 3, 402. No one disputes that
    finding on appeal, and we’ve found nothing in the record to contradict it.
    But the district court also concluded that the government didn’t provide a
    sufficient reason for its delayed disclosure. On appeal, the government challenges
    that conclusion by insisting the district court never “suggest[ed] that the government
    lacked a legitimate reason for the delay.” Aplt. Br. 19.
    We disagree. The only potential explanation the government offered below for
    its failure to provide Moya with timely notice of Sherwood’s testimony was that “no
    party is perfect.” App. vol. 3, 387. In response, the district court specifically stated
    that “it [was] not convinced that the [g]overnment’s oversight [was] a sufficient
    reason to justify the lengthy delay.” App. vol. 2, 312; see also 
    Banks, 761 F.3d at 5
    1199. Thus, by finding the government’s only proffered reason insufficient, the
    district court indicated that the government didn’t provide a legitimate reason for the
    delay. And we find no abuse of discretion in that conclusion. See 
    Wicker, 848 F.2d at 1061
    (holding that despite absence of bad faith, government’s “neglect[]” of its
    disclosure duty justified district court’s conclusion that this factor weighed in favor
    of defendant).
    B.     Prejudice
    Next, the government argues that the district court erred in concluding “that
    requiring [Moya] to cross[-]examine a newly disclosed expert witness on such short
    notice would unfairly prejudice [him].” App. vol. 2, 312. The government insists
    Moya would not be prejudiced because he could not have been unduly surprised by
    its decision to call Sherwood as an expert witness. See Fed. R. Crim. P. 16 advisory
    committee’s note to 1993 amendment (noting that purpose of requiring expert-
    testimony disclosure is “to minimize surprise that often results from unexpected
    expert testimony”); United States v. Ivy, 
    83 F.3d 1266
    , 1281 (10th Cir. 1996)
    (considering surprise as part of Wicker’s prejudice inquiry).3 Specifically, the
    3
    Ivy also notes that when a defendant doesn’t ask for a continuance, “a court
    can often assume that counsel did not need more time to incorporate the information
    into the defense’s game 
    plan.” 83 F.3d at 1281
    (quoting United States v. Sepulveda,
    
    15 F.3d 1161
    , 1178 (1st Cir. 1993)). Here, Moya didn’t request a continuance. But
    the government doesn’t ask us to take that fact into account in evaluating the second
    Wicker factor. Thus, we decline to do so. See Bronson v. Swensen, 
    500 F.3d 1099
    ,
    1104 (10th Cir. 2007) (noting that arguments not made in opening brief are waived).
    And in any event, Ivy simply points out that a district court can make such an
    assumption; it doesn’t indicate that a district court abuses its discretion if it chooses
    6
    government argues that Moya wasn’t surprised because (1) he had Sherwood’s report
    “well over a year before the scheduled trial date,” Aplt. Br. 20, and (2) he listed
    Sherwood on the second of his three witness lists.
    The government’s factual assertions are accurate. But we disagree that those
    facts mean Moya wasn’t surprised and thus wasn’t prejudiced.
    Merely having a copy of Sherwood’s report wouldn’t necessarily prompt
    defense counsel to prepare to cross-examine Sherwood as an expert. Likewise, that
    defense counsel once listed Sherwood as a potential defense witness would—at
    most—suggest that defense counsel might have been prepared to conduct a direct
    examination of Sherwood. But cross-examination and direct examination require
    distinct preparation. And preparing to cross-examine an expert witness is particularly
    tricky. See Smith v. Ford Motor Co., 
    626 F.2d 784
    , 793 (10th Cir. 1980) (explaining
    that “even with the help of his [or her] own experts,” an attorney “frequently cannot
    anticipate the particular approach [an] adversary’s expert will take” (quoting Fed. R.
    Civ. P. 26 advisory committee’s note to 1970 amendment)). Here, the government
    indisputably failed to include Sherwood in its earlier expert-witness disclosure or its
    earlier witness list. So the government’s belated decision to call Sherwood as an
    expert witness likely surprised Moya. And that surprise operated to his detriment:
    before the government’s late notice, Moya had no reason to plan or prepare to cross-
    not to do so. Cf. 
    Banks, 761 F.3d at 1199
    (noting that Wicker factors don’t “dictate
    the bounds of the court’s discretion” (quoting 
    Wicker, 848 F.2d at 1061
    )).
    7
    examine Sherwood. See United States v. Golyansky, 
    291 F.3d 1245
    , 1250 (10th Cir.
    2002) (defining prejudice as impact on defendant’s ability to prepare).
    Citing United States v. Charley, 
    189 F.3d 1251
    (10th Cir. 1999), the
    government disagrees. But Charley is distinguishable. True, we found no abuse of
    discretion in the district court’s refusal to exclude expert testimony in that case.
    
    Charley, 189 F.3d at 1261
    . Yet unlike the government in this case, the government in
    Charley timely notified the defense that it would call certain witnesses. It merely
    failed to provide summaries of their planned testimony, as Rule 16 requires. 
    Id. at 1257.
    Thus, the defendant in Charley knew that certain witnesses would testify on
    behalf of the government. But here, Moya had no notice at all that Sherwood would
    testify for the government: the government didn’t notify Moya that it would call
    Sherwood as a witness until two weeks before trial, and the expert designation came
    less than one week before trial. Thus, the district court didn’t abuse its discretion in
    finding that Moya would be prejudiced by having to prepare to cross-examine an
    expert witness on such short notice.
    C.     Feasibility of a Continuance
    In applying the third Wicker factor, a district court must consider whether a
    continuance is a feasible way to cure the prejudice. See 
    Banks, 761 F.3d at 1199
    .
    Here, the district court concluded that a continuance wasn’t feasible, in large part
    because of its own significant “docket and scheduling limitations.” App. vol. 2, 312.
    At the outset, the government asserts that Moya’s opposition to a continuance
    makes the third Wicker factor “essentially irrelevant.” Aplt. Br. 24 (quoting Ivy, 
    83 8 F.3d at 1281
    ); see also 
    Ivy, 83 F.3d at 1281
    (characterizing “third Wicker factor” as
    essentially irrelevant” because defendant “made it clear she did not want a
    continuance”). But the government didn’t make this argument below. In fact, it
    adopted precisely the opposite position: rather than characterizing this third factor as
    “irrelevant,” Aplt. Br. 24, the government told the district court that—despite Moya’s
    opposition to a continuance—the court nevertheless “need[ed] to consider” this factor
    and couldn’t “skip over that step” in the Wicker analysis, App. vol. 3, 410–11. Thus,
    we could apply the invited-error doctrine and hold that the government waived this
    argument below. Cf. United States v. LaHue, 
    261 F.3d 993
    , 1013 (10th Cir. 2001)
    (noting that invited-error doctrine precludes review on appeal of argument when that
    argument is “directly contradictory” to appellant’s position in district court).
    Moreover, even if the government merely forfeited this argument below, it doesn’t
    argue for plain error on appeal. Accordingly, we could decline to consider its
    assertion that the third Wicker factor is irrelevant on that basis as well. See Richison
    v. Ernest Grp., Inc., 
    634 F.3d 1123
    , 1131 (10th Cir. 2011) (noting that failure to
    argue for plain error on appeal “surely marks the end of the road” for argument not
    raised below).
    In any event, we reject this argument on the merits. As an initial matter, the
    third Wicker factor simply requires the district court to consider the feasibility of a
    continuance that could cure the prejudice. See 
    Wicker, 848 F.2d at 1061
    . Wicker says
    nothing about only considering the feasibility of a continuance if a party requests
    one. Moreover, even assuming that Moya’s opposition to a continuance makes the
    9
    third Wicker factor “essentially irrelevant,” that simply means the factor doesn’t
    weigh in anyone’s favor; it doesn’t mean the factor weighs against Moya, as the
    government contends. 
    Ivy, 83 F.3d at 1281
    . And the other two Wicker factors weigh
    in Moya’s favor, leaving the balance tilted toward him. Additionally, Moya’s
    opposition to a continuance isn’t relevant to one of the district court’s primary
    reasons for finding a continuance wasn’t feasible: its own docket and scheduling
    limitations. In other words, even if Moya requested a continuance, it doesn’t appear
    the district court would have found that option to be a feasible one. Thus, we reject
    the government’s position that the third Wicker factor weighs against Moya because
    Moya was opposed to a continuance.
    The government next argues that the district court’s analysis of the third
    Wicker factor was insufficient. In particular, it complains that the district court didn’t
    expressly consider the length of a continuance that might be necessary to cure the
    prejudice. But the only authority the government cites to support this argument is
    United States v. Yepa, 572 F. App’x 577, 586 (10th Cir. 2014) (unpublished) (noting
    that findings about necessary length of continuance should be part of analysis). And
    “[u]npublished decisions are not precedential.” 10th Cir. R. 32.1(A). Moreover,
    Wicker doesn’t require that the district court consider any particular facts related to
    the feasibility of a continuance; indeed, Wicker explicitly eschews such a proscriptive
    approach. 
    See 848 F.2d at 1061
    (noting that Wicker factors “are not intended to
    dictate the bounds of the court’s discretion”). And in any event, we read the record as
    suggesting the district court believed a continuance of any length would be
    10
    problematic: it noted that multiple continuances had already occurred in this case and
    emphasized the difficulty of rescheduling the trial both because of the court’s docket
    and because of the “challenge to reschedule all the defense witnesses.” App. vol. 2,
    312.
    The district court appropriately contemplated such considerations in
    determining whether a continuance was feasible, even independent of the prejudice
    analysis. As the Wicker court itself noted, “the district court may need to suppress
    evidence that did not comply with discovery orders to maintain the integrity and
    schedule of the court even though the defendant may not be 
    prejudiced.” 848 F.2d at 1061
    . Here, the district court concluded that because of “the difficulties inherent in
    rescheduling the case” and “the [c]ourt’s own docket and scheduling limitations,” it
    wasn’t “clear that a continuance would be a feasible way to cure the prejudice.” App.
    vol. 2, 312. The government hasn’t challenged that finding, and we find support for it
    in the record.4 We thus hold the district court did not abuse its discretion in reaching
    that conclusion.
    4
    Although the government never argues that the district court relied on an
    erroneous factual finding when evaluating this factor, the dissent nevertheless asserts
    that it did so. Specifically, the dissent contends that there’s no record support for the
    district court’s finding that the government “did not want a continuance.” App. vol.
    2, 312. We disagree. At the hearing, the government said, “[R]ight now we are not in
    a position to ask for a continuance because we are ready to go.” App. vol. 3, 421–22.
    Then, the district court said, “Nobody wants a continuance, including me.” 
    Id. at 422.
    And the government replied, “Right. We would certainly do it if that gets us to the
    point where everybody gets what they want.” 
    Id. Thus, although
    the government
    ultimately acceded to a continuance in the unlikely event that such a continuance
    would mean “everybody g[ot] what they want[ed],” it also unequivocally indicated it
    didn’t want one. 
    Id. So even
    if the government had challenged this finding as clearly
    11
    D.     Balancing the Wicker Factors
    Finally, even assuming the district court didn’t abuse its discretion in
    evaluating the individual Wicker factors, the government argues that we should
    reverse because we have “held on numerous occasions that district courts abused
    their discretion in excluding evidence even where the justification for exclusion was
    considerably stronger than it was in this case.” Aplt. Br. 25. But the cases the
    government cites don’t support this assertion.
    The government is correct that the facts in at least some of these cases are
    arguably more egregious than the facts present here. See, e.g., United States v.
    Gonzales, 
    164 F.3d 1285
    , 1291 (10th Cir. 1999) (“[T]he government knowingly and
    intentionally violated discovery orders and misrepresented the witness’ status and
    whereabouts to the court and defense counsel.”). But the government overlooks our
    reasons for reversing in each of the cases it cites. It wasn’t because we found the
    government’s behavior insufficiently egregious, as the government seems to suggest.
    It was because the district courts’ ultimate decisions to exclude evidence were based
    on intermediate findings that we determined were legally or factually flawed. See
    
    Golyansky, 291 F.3d at 1250
    (reversing because district court legally erred when it
    relied on its finding that defendant would be prejudiced by “additional financial
    erroneous, we would reject that challenge; this exchange supports the district court’s
    finding that the government “did not want a continuance.” App. vol. 2, 312; see also
    United States v. Sanchez-Urias, 
    887 F.3d 1069
    , 1071 (10th Cir. 2018) (explaining
    that “factual finding is clearly erroneous” only “if it lacks evidentiary support or if a
    review of the evidence leaves us with the definite and firm conviction that a mistake
    has been made” (quoting United States v. Mirabal, 
    876 F.3d 1029
    , 1032 (10th Cir.
    2017), cert. denied, 
    138 S. Ct. 2008
    (2018))).
    12
    burdens should the case be continued”; holding that “[t]he concept of prejudice does
    not encompass the expense of additional trial preparation”); 
    Gonzales, 164 F.3d at 1292
    (reversing because we found “no record support whatsoever” for district court’s
    conclusion “that the prejudice to defendants” from government’s misconduct “was
    irreparable”); United States v. Ivory, 131 F. App’x 628, 632 (10th Cir. 2005)
    (unpublished) (reversing because district court legally erred in relying on
    government’s discovery misconduct in separate cases without providing government
    with advance notice of its intent to do so).
    But the government fails to identify any similar legal or factual errors here. As
    discussed above, the district court found that the government didn’t sufficiently
    justify its failure to provide notice of Sherwood’s expert testimony, that the
    government’s failure prejudiced Moya, and that a continuance wasn’t feasible to cure
    that prejudice. And the government has failed to demonstrate that these findings were
    clearly erroneous or that the district court committed any legal error in taking these
    findings into account. Accordingly, the cases the government relies on are inapposite
    and do not require us to find an abuse of discretion here.
    Next, the government points out that we have previously affirmed the
    exclusion of evidence when a party attempted to introduce it after trial had
    commenced. See, e.g., 
    Banks, 761 F.3d at 1199
    (holding that district court didn’t
    abuse its discretion in excluding certain testimony where defendant sought to “call
    expert witnesses on the ninth day of trial”); United States v. Russell, 
    109 F.3d 1503
    ,
    1510, 1512 (10th Cir. 1997) (holding that district court didn’t abuse its discretion in
    13
    excluding testimony of substitute witnesses when defense counsel gave government
    notice of intent to call those witnesses on morning of fifth day of trial). But here, the
    government’s late disclosure occurred before the trial was scheduled to begin, rather
    than mid-trial. So the government argues that the prejudice in this case is less severe
    than in Banks and Russell. But the fact that a district court doesn’t abuse its
    discretion in excluding evidence that isn’t disclosed until after trial has commenced
    doesn’t necessarily mean that a district court does abuse its discretion in excluding
    evidence that is disclosed before that point. To hold otherwise would too narrowly
    circumscribe the “broad discretion” that district courts possess to “impos[e] sanctions
    on parties who violate discovery orders.” 
    Gonzales, 164 F.3d at 1291
    .
    In a related argument, the government insists that a continuance is the typical
    remedy for a Rule 16 violation in the absence of bad faith or when trial isn’t already
    in progress. See 
    Golyansky, 291 F.3d at 1249
    (“In the absence of a finding of bad
    faith, the court should impose the least severe sanction that will accomplish prompt
    and full compliance with the discovery order.”); 
    Wicker, 848 F.2d at 1062
    (“A
    continuance may normally be the most desirable remedy . . . .”). But “the
    ‘admonition that the trial court must impose the least severe sanction that will
    accomplish . . . prompt and full compliance with the court’s discovery orders does
    not mean that a continuance is necessary just because it will cure the prejudice.’”
    
    Banks, 761 F.3d at 1199
    (alteration in original) (quoting 
    Russell, 109 F.3d at 1512
    ).
    In fact, by indicating that a continuance “may normally be” the appropriate remedy,
    14
    Wicker necessarily recognizes that other remedies—such as exclusion—will be
    appropriate in some circumstances. 
    Wicker, 848 F.2d at 1062
    (emphasis added).5
    Thus, for the reasons discussed above, we hold that the district court didn’t
    abuse its discretion in excluding Sherwood’s expert testimony. See 
    Banks, 761 F.3d at 1197
    (noting that an abuse of discretion occurs when a decision “is arbitrary,
    capricious, whimsical[,] or manifestly unreasonable,” or when “the district court
    made a clear error of judgment or exceeded the bounds of permissible choice in the
    circumstances” (quoting 
    Nacchio, 555 F.3d at 1241
    )). In reaching that conclusion, we
    emphasize that the question before us isn’t whether exclusion is the sanction that we
    would have chosen. See 
    Gonzales, 164 F.3d at 1294
    (McKay, J., concurring in part
    and dissenting in part). The question is whether the district court abused its discretion
    when it decided that this was one of the “rare case[s]” in which exclusion was
    appropriate. 
    Golyansky, 291 F.3d at 1249
    . We conclude that it did not.
    II.   Labay’s Testimony and the Confrontation Clause
    Next, the government argues that the district court erred when it found that
    allowing the government to present Labay’s testimony—which would be based in
    5
    Relying on language in Golyansky, the dissent similarly states that a district
    court is “oblige[d]” to impose “the least severe sanction that will accomplish prompt
    and full compliance with the discovery order.” Dissent 6 (quoting 
    Golyansky, 291 F.3d at 1249
    ). But the dissent reads the language in Golyansky too broadly. Contrary
    to the dissent’s position, Golyansky doesn’t “limit[]” a district court’s discretion
    when deciding on sanctions for Rule 16 violations. 
    Id. Instead, Golyansky
    simply
    notes that a district court “should impose the least severe sanction” and that “[t]he
    preferred sanction is a 
    continuance.” 291 F.3d at 1249
    (emphases added). Words like
    “should” and “preferred” connote recommendations—not requirements. 
    Id. As such,
    we disagree with the dissent’s assertion that the district court’s “discretion [was]
    limited” or “cabined” by our caselaw. Dissent 1, 6.
    15
    part on Sherwood’s toxicology report—would violate the Confrontation Clause. “We
    review de novo a district court’s legal conclusions regarding the Confrontation
    Clause.” United States v. Garcia, 
    793 F.3d 1194
    , 1211 (10th Cir. 2015).
    “The Sixth Amendment’s Confrontation Clause provides that, ‘[i]n all criminal
    prosecutions, the accused shall enjoy the right . . . to be confronted with the
    witnesses against him.’” Crawford v. Washington, 
    541 U.S. 36
    , 42 (2004) (alteration
    in original) (quoting U.S. Const. amend. VI). In practice, the Confrontation Clause
    prohibits the admission of testimonial hearsay at trial unless the declarant is
    unavailable to testify and the defendant had a prior opportunity to cross-examine the
    declarant. See 
    id. at 53–54.
    The key word here is “testimonial”: the Confrontation
    Clause only applies to testimonial hearsay. See 
    id. at 68.
    As such, we begin with the
    government’s argument that Sherwood’s toxicology report isn’t testimonial, and thus
    admitting Labay’s testimony based on that report wouldn’t violate the Confrontation
    Clause.
    Generally speaking, a statement is testimonial if it’s “made with the primary
    purpose of creating evidence for the prosecution.” United States v. Alcorta, 
    853 F.3d 1123
    , 1137 (10th Cir. 2017); see also Bullcoming v. New Mexico, 
    564 U.S. 647
    , 659
    n.6 (2011) (defining testimonial statement as one with “a ‘primary purpose’ of
    ‘establish[ing] or prov[ing] past events potentially relevant to later criminal
    prosecution’” (alterations in original) (quoting Davis v. Washington, 
    547 U.S. 813
    ,
    822 (2006))). Applying this primary-purpose test, see Ohio v. Clark, 
    135 S. Ct. 2173
    ,
    2179 (2015), we consider whether “a reasonable person in the position of the
    16
    declarant would objectively foresee that the primary purpose of the statement was for
    use in the investigation or prosecution of a crime.” United States v. Ibarra-Diaz, 
    805 F.3d 908
    , 917 (10th Cir. 2015) (quoting United States v. Smalls, 
    605 F.3d 765
    , 778
    (10th Cir. 2010)).
    The government contends that Sherwood’s toxicology report doesn’t meet the
    primary-purpose test and thus isn’t testimonial. Moya responds, although without any
    elaboration or explanation, that the report is testimonial. Courts applying the
    primary-purpose test to forensic reports tend to consider both (1) the general
    relationship between law enforcement and the agency that completed the testing as
    well as (2) the particular facts and circumstances of the case, such as the passage of
    time between the creation of the report and the criminal charges. See, e.g., United
    States v. James, 
    712 F.3d 79
    , 97–99 (2d Cir. 2013); United States v. Ignasiak, 
    667 F.3d 1217
    , 1231–33 (11th Cir. 2012); United States v. Moore, 
    651 F.3d 30
    , 73 (D.C.
    Cir. 2011). For example, in James, the Second Circuit held that the declarant’s
    primary purpose in preparing an autopsy report wasn’t to “creat[e] a record for use at
    a later criminal trial” because (1) the New York City Office of the Chief Medical
    Examiner was an agency that was independent from law enforcement and (2) that
    office completed the autopsy report long before law enforcement began a criminal
    investigation into the victim’s 
    death. 712 F.3d at 97
    –99. Thus, the autopsy report
    wasn’t testimonial. 
    Id. at 99;
    cf. 
    Ignasiak, 667 F.3d at 1231
    –32 (holding that an
    autopsy report was testimonial primarily because under statutory framework, Florida
    Medical Examiner’s Office existed within Department of Law Enforcement).
    17
    Here, New Mexico requires medical examiners to conduct an autopsy if the
    medical examiner suspects the death was caused by a criminal act or if “the cause of
    death is obscure.” N.M. Stat. Ann. § 24-11-7. Medical examiners must also report
    their findings directly to the district attorney in all cases they have investigated. 
    Id. § 24-11-8.
    And, as Moya asserts in a letter of supplemental authority, this statutory
    framework could support the conclusion that some reports generated by medical
    examiners are testimonial. See State v. Navarette, 
    294 P.3d 435
    , 440–41 (N.M. 2013)
    (finding autopsy report testimonial based in part on statutory connection between
    OMI and law enforcement).
    But in this case, we aren’t concerned with an autopsy report generated by a
    medical examiner. Rather, as the government points out, this case involves a
    “toxicology report [that] was ordered not by law enforcement in connection with a
    prosecution, but by the OMI in connection with an investigation into the cause of a
    death.” Aplt. Br. 38–39. Thus, the statutory relationship between law enforcement
    and OMI isn’t the only factor relevant to our inquiry about whether the toxicology
    report created by NMS is testimonial. And when we focus on the other relevant
    factors, we conclude that the toxicology report in this case isn’t testimonial. See
    
    Clark, 135 S. Ct. at 2182
    (noting that “[c]ourts must evaluate challenged statements
    in context”).
    First, as the government points out, almost four years passed between August
    2011, when C.W. died and Sherwood completed her report, and May 2015, when the
    government charged Moya. The record doesn’t disclose exactly when, in this nearly-
    18
    four-year period, law enforcement either (1) began investigating C.W.’s death or
    (2) connected his death to Moya’s alleged heroin distribution. What we do know is
    that Labay completed her first cause-of-death report in October 2014, over three
    years after Sherwood certified the toxicology report. In addition, Labay’s report
    identifies the investigation reports that she relied on, most of which are from 2013
    and the earliest of which appears to be dated September 2012. Thus, it appears that
    Sherwood certified her report at least one year before any criminal investigation into
    C.W.’s death began, if not longer. This time gap suggests that the toxicology report
    isn’t testimonial. See 
    James, 712 F.3d at 99
    (finding autopsy report not testimonial in
    part because it was completed “substantially before any criminal investigation into
    [victim’s] death had begun”); 
    id. at 101
    (finding toxicology report not testimonial in
    part because there was “no indication . . . that a criminal investigation was
    contemplated during the inquiry”); cf. State v. Bass, 
    132 A.3d 1207
    , 1225 (N.J. 2016)
    (finding autopsy report testimonial in part because autopsy took place during active
    homicide investigation).
    Second, the government points out that law enforcement didn’t request the
    toxicology report from NMS. Nor does it appear that law enforcement received a
    copy of it directly from NMS. Instead, OMI requested the toxicology testing, and it
    appears that Sherwood sent her report directly to OMI, not to law enforcement. And
    although it’s not determinative, this further suggests that the toxicology report isn’t
    testimonial. See 
    James, 712 F.3d at 101
    n.3 (noting that involvement of law
    enforcement in forensic investigation isn’t determinative); State v. Mattox, 890
    
    19 N.W.2d 256
    , 267 (Wis. 2017) (“The toxicology report at issue in [this] case was not
    prepared for or given to law enforcement, making it much less likely to be
    testimonial.”); cf. 
    Clark, 135 S. Ct. at 2181
    (finding that statements made to someone
    other than law enforcement are more likely to be nontestimonial).
    Third, the record doesn’t disclose any other facts that would suggest to a
    reasonable person in Sherwood’s position that the primary purpose of her report
    detailing the results of the blood and urine tests was for criminal investigation or
    prosecution. See 
    Ibarra-Diaz, 805 F.3d at 917
    (noting that test is whether reasonable
    person “would objectively foresee that the primary purpose of the statement was for
    use in the investigation or prosecution of a crime” (quoting 
    Smalls, 605 F.3d at 778
    )).
    True, she worked for a forensic lab and therefore conducted testing that could
    theoretically be used in criminal investigation or prosecution. But as the government
    points out, OMI routinely conducts autopsies that don’t ultimately lead to criminal
    investigations or prosecutions. Cf. 
    James, 712 F.3d at 99
    & n.10 (concluding, based
    on statistics, that “there is reason to believe that [no criminal investigation] is
    pursued in the case of most autopsies”). And nothing about the report Sherwood
    signed in this case suggested any criminal investigation or prosecution would be
    forthcoming. Her toxicology report is distinct, for example, from the testimonial
    autopsy report in Bass. There, the “autopsy was conducted in the presence of two law
    enforcement officers” and the autopsy report concluded that the manner of death was
    a gunshot wound to the back of the victim’s torso—an obvious indication that the
    wound wasn’t self-inflicted. 
    Bass, 132 A.3d at 1225
    –26; see also 
    Moore, 651 F.3d at 20
    73 (finding autopsy reports testimonial when they concluded that manner of death
    was “homicide caused by gunshot wounds” and homicide detectives attended several
    autopsies and participated in creation of reports). Nor does the record disclose any
    other interaction between NMS and law enforcement in connection with the creation
    of the toxicology report. See 
    James, 712 F.3d at 101
    n.13 (finding involvement of
    law enforcement in transporting samples was routine and thus did “not indicate that a
    criminal investigation was contemplated”). These facts thus further suggest the
    nontestimonial status of this particular toxicology report.
    Additionally, we agree with the government’s assertion that Sherwood’s
    toxicology report isn’t like the testimonial affidavits in Melendez-Diaz v.
    Massachusetts, 
    557 U.S. 305
    (2009), or the testimonial lab report in 
    Bullcoming, 564 U.S. at 664
    –65. In Melendez-Diaz, the Court held that affidavits certifying a seized
    substance as cocaine were “functionally identical to live, in-court 
    testimony.” 557 U.S. at 310
    –11. But the toxicology report here differs from the affidavits in
    Melendez-Diaz in two important ways. First, the testing in Melendez-Diaz was
    conducted at law enforcement’s request. 
    Id. at 308.
    Here, as we’ve explained, law
    enforcement had no involvement with the creation of the toxicology report. Second,
    the affidavits in Melendez-Diaz stated their evidentiary purpose on their face. 
    Id. at 311.
    But the toxicology report contains no similar statement, and it served no obvious
    evidentiary purpose at the time Sherwood signed it. In sum, the toxicology report is
    not the same as affidavits sworn for the “sole purpose” of providing “‘prima facie
    21
    evidence of the composition, quality, and the net weight’ of [an] analyzed
    substance.” 
    Id. (quoting Mass.
    Gen. Laws ch. 111, § 13 (repealed 2012)).
    Nor is Sherwood’s toxicology report similar to the “certificate of analyst”
    containing the results of a blood-alcohol test introduced without the testimony of the
    analyst in 
    Bullcoming. 564 U.S. at 653
    (quoting App. 62). Like in Melendez-Diaz, the
    blood alcohol testing in Bullcoming was administered after a law-enforcement officer
    provided seized evidence to a state laboratory following a DUI arrest, and the lab
    report itself included details about how it could be admitted as evidence in court. 
    Id. at 665.
    Neither of those facts exists here. True, the Bullcoming court said that “[a]n
    analyst’s certification prepared in connection with a criminal investigation or
    prosecution” is testimonial and can’t be introduced at trial absent testimony from the
    certifying analyst. 
    Id. at 658–59
    (emphasis added). But here, as we’ve already
    outlined, Sherwood’s certification wasn’t “prepared in connection with a criminal
    investigation or prosecution.” 
    Id. at 658.
    For comparison’s sake, consider Labay’s reports. She completed those reports
    at the request of law enforcement about six months before the government indicted
    Moya. She relied on investigative reports, the autopsy report, the toxicology report,
    and grand-jury testimony to conclude that C.W. died of a heroin overdose. And the
    facts surrounding the creation of these reports—the closeness in time and law
    enforcement’s involvement—indicate that Labay completed them “in connection with
    a criminal investigation or prosecution.” 
    Id. Likewise, a
    reasonable forensic
    toxicologist, when completing such a report, would foresee that “the primary
    22
    purpose” was “the investigation or prosecution of a crime.” 
    Ibarra-Diaz, 805 F.3d at 917
    (quoting 
    Smalls, 605 F.3d at 778
    ). On the other hand, there are no similar facts
    indicating that Sherwood completed her report to establish or prove “past events
    potentially relevant to later criminal prosecution.” 
    Bullcoming, 564 U.S. at 659
    n.6
    (quoting 
    Davis, 547 U.S. at 822
    ). Instead, we conclude that the primary purpose of
    Sherwood’s report was “to determine the cause of C.W.’s death.” Aplt. Br. 36; see
    also 
    Mattox, 890 N.W.2d at 268
    (finding toxicology report nontestimonial “because
    its primary purpose was to identify the concentration of the tested substances in
    biological samples sent by the medical examiner as a part of her autopsy to determine
    the cause of death”).
    As such, Sherwood’s toxicology report is not testimonial.6 And because the
    Confrontation Clause only applies to testimonial hearsay, see 
    Crawford, 541 U.S. at 68
    , Labay’s reliance on Sherwood’s report doesn’t implicate that constitutional
    provision.7 We therefore reverse the district court’s order excluding Labay’s
    testimony.
    6
    The government further argues that the Supreme Court’s decision in Williams
    v. Illinois, 
    567 U.S. 50
    (2012), supports this conclusion. And to the extent that
    Williams found a forensic test—in particular, a DNA report—to be nontestimonial,
    the result in that case corresponds to the result we reach here. See 
    Williams, 567 U.S. at 57
    –58 (plurality opinion). But as some of our sibling circuits have concluded,
    Williams lacks a controlling rationale for that result. United States v. Duron-Caldera,
    
    737 F.3d 988
    , 994 n.4 (5th Cir. 2013); 
    James, 712 F.3d at 95
    . Thus, Williams offers
    little, if any, actual guidance here.
    7
    Because we hold that Sherwood’s report isn’t testimonial under the primary-
    purpose test, we don’t address the government’s argument that the toxicology report
    isn’t testimonial because it contains only data generated by machines. But we do note
    that this point is markedly similar to an argument that the Supreme Court rejected in
    23
    Conclusion
    Because the district court didn’t abuse its discretion when it examined and
    balanced the Wicker factors and sanctioned the government for violating Rule 16, we
    affirm the district court’s order excluding Sherwood’s testimony. But we also
    conclude that Sherwood’s report isn’t testimonial. As a result, Labay may testify
    based in part on that report without running afoul of the Confrontation Clause. So we
    reverse the district court’s order excluding Labay’s testimony and remand for further
    proceedings.
    Entered for the Court
    Nancy L. Moritz
    Circuit Judge
    Bullcoming. 
    See 564 U.S. at 659
    –61 (rejecting New Mexico court’s conclusion that
    analyst’s report and certification merely transcribed results produced by machines;
    noting that report contained “more than a machine-generated number”).
    24
    United States v. Moya, No. 17-2043
    EID, J., dissenting.
    Our precedent states that the exclusion of a witness to remedy a discovery
    violation should be a “rare” occurrence absent bad faith. United States v. Golyansky, 
    291 F.3d 1245
    , 1249 (10th Cir. 2002). In United States v. Gonzales, for example, we
    concluded that the district court “abused its discretion in imposing what was obviously
    the most severe available sanction, i.e., complete suppression of the witness’ statements
    and trial testimony” because the sanction was “too severe” under the circumstances. 
    164 F.3d 1285
    , 1292 (10th Cir. 1999). In the case before us, however, the majority barely
    acknowledges this aspect of our caselaw. Indeed, it never considers whether excluding
    Sherwood was “too severe” a sanction or whether this is the “rare” case in which
    exclusion is warranted. Instead, it relies upon the dissent in Gonzales that rejected such
    an analysis and emphasized that “[t]he question before [us] . . . is not whether
    [exclusion] . . . was the remedy we would have chosen, or even whether we think
    [exclusion] . . . is unduly harsh.” 
    Id. at 1294
    (McKay, J., concurring in part and
    dissenting in part) (disagreeing with majority’s conclusion that the district court abused
    its discretion in excluding witness); see maj. op. at 15. But assessing whether a sanction
    is unduly harsh is precisely the inquiry that our precedent requires. See 
    Gonzales, 164 F.3d at 1292
    (majority opinion). Because I would apply our governing precedent and
    find that that this is not a “rare” case and that exclusion was “too severe” a sanction under
    the circumstances, I respectfully dissent.
    As the majority points out, the district court’s decision to exclude Sherwood is
    subject to abuse of discretion review. Maj. op. at 4. In the context of the exclusion of
    witness testimony, however, we have significantly cabined that discretion. As we stated
    in Golyansky,
    In the absence of a finding of bad faith, the court should impose the least
    severe sanction that will accomplish prompt and full compliance with the
    discovery order. The preferred sanction is a continuance. It would be a
    rare case where, absent bad faith, a district should exclude evidence rather
    than continue the 
    proceedings. 291 F.3d at 1249
    (emphasis added) (citations omitted). As we have recognized,
    exclusion of a witness is “almost never imposed in the absence of a constitutional
    violation or statutory authority for such exclusion.” United States v. Charley, 
    189 F.3d 1251
    , 1262 (10th Cir. 1999) (quotations omitted). In deciding whether exclusion is “the
    least severe sanction” sufficient to address the violation, 
    Golyansky, 291 F.3d at 1249
    , the
    district court should consider three factors: (1) the reason for the delay; (2) the extent of
    the prejudice to the party seeking disclosure; and (3) the feasibility of curing the
    prejudice with a continuance, see maj. op. at 4–5 (citing United States v. Banks, 
    761 F.3d 1163
    , 1198–99 (10th Cir. 2014)); see also 
    Gonzales, 164 F.3d at 1292
    (considering these
    factors and concluding that exclusion was “too severe” a sanction and remanding for
    “consideration of less severe sanctions”).
    Here, it is undisputed that the failure to list Sherwood as a witness was not
    motivated by bad faith. Maj. op. at 5. Therefore, the question is whether this was the
    “rare case” in which exclusion was necessary. I believe the answer to that question is no.
    2
    First, the prejudice to Moya was relatively small. As the majority acknowledges,
    Sherwood’s toxicology report was provided to Moya over a year before trial. Maj. op. at
    7. Further, Moya retained two experts to challenge Sherwood’s findings. App. vol. 1,
    190–99 (Dr. Steven Pike); App. vol. 2, 297–307 (Janine Arvizu). Both of these experts
    challenged Sherwood’s findings in their own reports. App. vol. 1, 190–99; App. vol. 2,
    297–307. Moreover, Moya listed Sherwood on his list of potential witnesses (later
    deleting her once the government filed an emergency motion to add her to its list).
    Compare App. vol. 1, 187–88 (amended witness list; including Sherwood), with 
    id. at 230–31
    (second amended witness list; omitting Sherwood). Moya was thus not only
    familiar with Sherwood’s toxicology report, he had retained two experts to take issue
    with it and had listed her as a potential witness. Under these circumstances, it is difficult
    to say that the prejudice of nondisclosure was substantial or that Moya would have
    needed significant time to prepare for cross-examining Sherwood. This case is thus
    analogous to Charley where we concluded that, although some witnesses had been
    mislabeled fact witnesses instead of expert witnesses, the defendant did not “suffer[] any
    prejudice” because the “government turned over to the defense copies of all . . . records
    from which the witnesses would be 
    testifying.” 189 F.3d at 1262
    .1
    1
    The majority distinguishes Charley on the ground that, “unlike the government in this
    case, the government in Charley timely notified the defense that it would call certain
    witnesses. It merely failed to provide summaries of their planned testimony . . . . Thus,
    the defendant in Charley knew that certain witnesses would testify on behalf of the
    government.” Maj. op. at 8. I disagree with the majority’s reading of Charley, as the
    government in that case had not designated the witnesses as experts. 
    See 189 F.3d at 1257
    (“Well before trial in this case, the government notified defense counsel that it
    3
    Second, the feasibility of a continuance was not properly considered by the district
    court. The district court noted that the case had been continued “multiple times” already.
    App. vol. 2, 312. Indeed, Moya received at least four continuances so that he could retain
    experts to challenge Sherwood. See App. vol. 1, 121–59, 164–65, 205–23. However, the
    district court did not explore the feasibility of a continuance. The court noted that that
    the government “would acquiesce if [Moya] requested a continuance” so that Sherwood
    could testify, but explained that “[Moya] expressed a clear desire to proceed with the trial
    as scheduled because it would be quite a challenge to reschedule all the defense
    witnesses.” App. vol. 2, 312. The court went on to find that it would not grant a
    continuance because “both parties expressed that they did not want a continuance and
    [because of] the difficulties inherent in rescheduling the case, along with the Court’s own
    docket.” 
    Id. But the
    district court’s suggestion that the government “did not want a
    continuance” is inaccurate.2 The government’s position was that it did not believe a
    would call as witnesses certain health care professionals . . . . However, it did not
    designate any of these witnesses as experts and, accordingly, did not provide defense
    counsel with any summaries of expert witness testimony . . . .” (emphasis added)). The
    case before us is actually a weaker case for exclusion: Not only was Moya aware of the
    witness, as in Charley, but he also knew what the witness would say since he had had
    Sherwood’s report for over a year.
    2
    The majority suggests that the government “never argues that the district court relied on
    an erroneous factual finding when [evaluating the feasibility of a continuance].” Maj. op.
    at 11 n.4. The majority’s suggestion overlooks the government’s vigorous argument that
    the district court’s “analysis [of this factor was] insufficient.” Aplt. Br. at 24 (calling to
    the court’s attention the district court’s conclusion that neither side “want[ed] a
    continuance” and contending that the district court’s analysis was “insufficient”).
    4
    continuance was necessary given Moya’s possession of Sherwood’s report, his retention
    of two witnesses to challenge that report, and the fact that Sherwood had appeared on his
    witness list. See App. vol. 3 at 407–11; App. vol. 1, 187–88. But there is nothing in the
    record to suggest that the government preferred exclusion over a continuance if faced
    with the possibility that Sherwood would not be permitted to testify. Indeed, the
    government was prepared to accept a continuance if one was necessary to allow Moya to
    prepare for Sherwood’s testimony. Thus, the district court excluded Sherwood’s
    testimony on the ground, not supported by the record, that the government opposed a
    continuance. The absence of record support for the district court’s conclusion in this
    regard constitutes an abuse of discretion. See 
    Gonzales, 164 F.3d at 1292
    (concluding
    that the district court had abused its discretion in ordering exclusion where there was “no
    record support whatsoever” for the court’s conclusion that a continuance could not cure
    prejudice to defendants). Stated differently, the district court abused its discretion in this
    case by not considering whether a continuance could cure any prejudice caused by the
    government’s failure to timely disclose Sherwood. The most that can be said about the
    district court’s assessment of this factor is that it would have been inconvenient to
    reschedule the trial. Maj. op. at 8 (noting that the district court mentioned its own
    “docket and scheduling limitations”).
    More fundamentally, there is nothing in the record to support a finding that this
    was the “rare” case in which exclusion was a necessary remedy. I do not take issue with
    5
    the majority’s conclusion that there was at least some prejudice to Moya due to the
    government’s failure to timely list Sherwood, and at least some difficulty in rescheduling
    the trial. Maj. op. at 8, 10, 14. But this would be true in virtually any case involving a
    discovery violation. The question here is whether this is the “rare” case where a
    continuance would not be the proper remedy. There is nothing in the record in my view
    that sets this case apart so as to justify exclusion.
    The most troubling aspect of the majority’s opinion is its failure to recognize that
    exclusion is to be the “rare” remedy. As we explained in Gonzales,
    we emphasize the Supreme Court has never approved exclusion of evidence
    as a sanction for government misconduct in the absence of a constitutional
    violation or statutory authority for such exclusion. Indeed, the Court has
    emphasized that penalties visited upon the Government, and in turn upon
    the public, because its officers have violated the law must bear some
    relation to the purposes which the law is to serve. Here, we are convinced
    the sanction of total exclusion is too severe and hinders, rather than
    forwards, the public interest in a full and truthful disclosure of critical 
    facts. 164 F.3d at 1292
    (citations and quotations omitted). As noted above, the majority not
    only overlooks this caselaw, but relies on the dissent in Gonzales that rejected such an
    analysis and emphasized that “[t]he question before [us] . . . is not whether [exclusion] . .
    . was the remedy we would have chosen, or even whether we think [exclusion] . . . is
    unduly harsh.” 
    Gonzales, 164 F.3d at 1294
    (McKay, J., concurring in part and dissenting
    in part) (disagreeing with majority’s conclusion that the district court abused its
    discretion in excluding witness); see maj. op. at 15. But according to the Gonzales
    majority opinion, we must assess whether the sanction is too 
    severe. 164 F.3d at 1292
    –
    93 (finding exclusion to be “too severe” of a sanction and remanding the case to the
    6
    district court for “less severe sanctions”). Here, that inquiry into whether exclusion was
    necessary is an easy one because there is nothing in the record to suggest that a brief
    continuance would not have cured any prejudice to Moya, or even that a continuance was
    necessary.
    In the end, the majority’s basic error, in my view, is to apply an abuse of
    discretion standard without any recognition that the discretion has been limited. The
    majority states that “[u]nder this deferential standard of review, ‘we will not disturb the
    ruling unless it is arbitrary, capricious, whimsical[,] or manifestly unreasonable, or we are
    convinced that the district court made a clear error of judgment or exceeded the bounds
    of permissible choice in the circumstances.’” Maj. op. at 4 (second alteration in original)
    (quoting United States v. Banks, 
    761 F.3d 1163
    , 1197 (10th Cir. 2014));3 see also maj.
    op. at 15 (same). Here, I agree with the majority that the district court’s decision was not
    arbitrary, capricious, whimsical, or manifestly unreasonable. It did, however, make a
    decision that was outside the bounds of permissible choice because our caselaw obliges
    the court to select “the least severe sanction that will accomplish prompt and full
    compliance with the discovery order.” 
    Golyansky, 291 F.3d at 1249
    .
    3
    To the extent that the majority relies on Banks, see maj. op. at 14–15, that reliance is
    misplaced.
    In Banks, the defendants attempted to call three undisclosed expert witnesses on the ninth
    day of trial and after the close of the government’s 
    case. 761 F.3d at 1197
    –99. The
    district court permitted one undisclosed expert to testify because the “exclusion of
    evidence for violating discovery orders should not be done lightly,” but excluded the
    other two undisclosed defense experts. 
    Id. at 1198
    (citation omitted). On appeal, we
    upheld that exclusion order because Banks is indeed the rare case. 
    Id. 7 Because
    I would reverse on the ground that the district court abused its discretion
    in excluding Sherwood’s testimony, I do not need to reach the government’s second
    ground for appeal, namely, whether Labay’s testimony would violate the Confrontation
    Clause. I therefore express no view on that issue. For the reasons stated above, I
    respectfully dissent.
    8