United States v. Luke Burning Breast ( 2021 )


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  •                  United States Court of Appeals
    For the Eighth Circuit
    ___________________________
    No. 20-1450
    ___________________________
    United States of America
    lllllllllllllllllllllPlaintiff - Appellee
    v.
    Luke Joseph Burning Breast
    lllllllllllllllllllllDefendant - Appellant
    ____________
    Appeal from United States District Court
    for the District of South Dakota - Central
    ____________
    Submitted: December 18, 2020
    Filed: August 11, 2021
    ____________
    Before GRUENDER, ERICKSON, and KOBES, Circuit Judges.
    ____________
    ERICKSON, Circuit Judge.
    Luke Joseph Burning Breast appeals his conviction for being a felon in
    possession of a firearm, arguing the government failed to show he (1) possessed a
    “firearm” that traveled in interstate commerce, and (2) knew of his status as a
    prohibited person. Burning Breast also argues the district court1 failed to properly
    instruct the jury on both issues. We affirm.
    I.    BACKGROUND
    In 2007, Burning Breast pled guilty in federal court to being a drug user in
    possession of a firearm, in violation of 18 U.S.C. §§ 922(g)(3) and 924(a)(2). He
    received a three-year probationary sentence. Twelve years later, on July 28, 2018,
    Burning Breast purchased an AR-15 style rifle from his mother, Georgia Hackett
    (“Hackett”). Hackett, on April 9, 2019, reported a domestic incident between
    Burning Breast and his girlfriend that occurred at Hackett’s residence in Rosebud,
    South Dakota. As Burning Breast was being arrested, the officers asked him where
    to find his car keys so Hackett could move his vehicle. Burning Breast stated the
    keys were outside next to his rifle. Aware of Burning Breast’s prior criminal record,
    when one of the officers questioned Burning Breast, Burning Breast admitted he was
    a felon but believed his conviction had been expunged since it was more than ten
    years old. The officer told Burning Breast that under federal law he continued to be
    a felon unless he received a pardon. Burning Breast responded, “Well, that’s what
    must have happened.”
    The officers seized the rifle, a loaded magazine found near the rifle, and
    another magazine located inside the residence. Burning Breast’s rifle was distinctive,
    as portions had been spray-painted blue. After Burning Breast was released on the
    domestic assault charge, he filed a motion in tribal court to recover the rifle. He
    produced the bill of sale from July 2018, and the tribal court ordered the rifle be
    returned to Burning Breast.
    1
    The Honorable Roberto A. Lange, United States District Judge for the District
    of South Dakota.
    -2-
    On August 14, 2019, Burning Breast was indicted for being a felon in
    possession of a firearm, in violation of 18 U.S.C. §§ 922(g)(1) and 924(a)(2). The
    indictment alleged that Burning Breast knowingly possessed a Smith & Wesson,
    model M&P 15 semi-automatic rifle, which had been shipped and transported in
    interstate and foreign commerce. Before trial, the government filed a motion in
    limine to exclude evidence regarding Burning Breast’s “mistake of law” as to his
    status as a prohibited person and Burning Breast’s possible belief that the prior
    conviction had been expunged. After a hearing, the district court granted the motion
    and, relying on Rehaif v. United States, 588 U.S. ___, 
    139 S. Ct. 2191
     (2019),
    determined the government did not have to prove Burning Breast knew he was
    prohibited from possessing a firearm, but only that he knew he belonged to the
    relevant category of persons barred from possessing a firearm.
    At trial, the court received into evidence a certified copy of the judgment from
    Burning Breast’s prior felony conviction along with the plea agreement and transcript
    from the plea hearing. The transcript and plea agreement each outlined the maximum
    penalty for the offense as exceeding one year. Special Agent Brent Fair of the Bureau
    of Alcohol, Tobacco, Firearms and Explosives testified that the rifle found in Burning
    Breast’s possession was an AR-15 style rifle with an upper and lower receiver, and,
    consistent with federal regulations, only the lower receiver was marked with a serial
    number. Special Agent Fair further testified that he traced the lower receiver, which
    was manufactured in Illinois and thereafter shipped to Massachusetts, “where it was
    assembled as a finished rifle by Smith & Wesson.” From Massachusetts the firearm
    was shipped to Louisiana before being shipped to a gun dealer in Nebraska. The
    firearm was sold in 2014 to an individual in South Dakota. Several years later, the
    firearm was recovered in Burning Breast’s possession. Special Agent Fair opined the
    firearm in Burning Breast’s possession was a complete firearm manufactured by
    Smith & Wesson and the parts that had been subsequently painted, or swapped out,
    or added (the evidence before the jury was that the only known changes to the rifle
    -3-
    were a scope and a light2) did not change the fact that it was a firearm that had been
    shipped and transported in interstate commerce.
    Burning Breast moved for judgment of acquittal, asserting the government
    failed to meet its burden because it did not prove the entire firearm traveled in
    interstate commerce, only the lower receiver. The district court denied the motion,
    finding the jury could infer that the fully assembled firearm crossed state lines.
    Burning Breast requested a theory of defense instruction, which highlighted the
    definition of a receiver. While the district court did not instruct the jury exactly as
    Burning Breast requested, it added a definition of receiver to the instructions. The
    district court declined to give Burning Breast’s other requested instruction, which
    stated that Burning Breast had to know his prior conviction was not expunged. After
    deliberating for 46 minutes, the jury found Burning Breast guilty. The district court
    sentenced him to a 16-month term of imprisonment. Burning Breast timely appealed.
    II.   DISCUSSION
    We review de novo the denial of a motion for judgment of acquittal “viewing
    the evidence in a light most favorable to the verdict and accepting all reasonable
    2
    Hackett testified about the changes to the rifle as follows:
    Q.     Do you know when he painted [the firearm] approximately?
    A.     No. I don’t. We live separately. He is a grown man.
    Q.     Sure. Do you - - can you see some of the components on here that might
    have changed during the time that you saw him with his rifle?
    A.     Well, the scope.
    Q.     Okay. The sight back here?
    A.     Yeah. And the - -
    Q.     The light? You saw those things added?
    A.     Yeah, uh-huh.
    (Trial Tr. Vol. II pp. 63–64).
    -4-
    inferences supporting the verdict.” United States v. Colton, 
    742 F.3d 345
    , 348 (8th
    Cir. 2014). We reverse “only if no reasonable jury could have found guilt beyond a
    reasonable doubt.” United States v. Mabery, 
    686 F.3d 591
    , 598 (8th Cir. 2012).
    In order to be convicted of being a felon in possession of a firearm, the
    government must prove beyond a reasonable doubt that (1) Burning Breast had been
    previously convicted of a crime punishable by a term of imprisonment exceeding one
    year; (2) Burning Breast knowingly possessed a firearm; (3) the firearm was in or
    affecting interstate commerce; and (4) Burning Breast “knew he belonged to the
    relevant category of persons barred from possessing a firearm.” United States v.
    Coleman, 
    961 F.3d 1024
    , 1027 (8th Cir. 2020) (cleaned up); see 18 U.S.C. § 922(g).
    Burning Breast challenges the third and fourth elements, arguing that the evidence
    was insufficient to sustain a conviction under § 922(g).
    With regard to the interstate nexus requirement, we have explained that “[t]he
    government need not produce the firearm in question to satisfy this element; proof that
    the firearm was manufactured outside the state of possession will suffice.” United
    States v. Cox, 
    942 F.2d 1282
    , 1286 (8th Cir. 1991) (citation omitted). As relevant in
    this case, 18 U.S.C. § 921(a)(3) defines a “firearm” as “(A) any weapon . . . which will
    or is designed to or may readily be converted to expel a projectile by the action of an
    explosive; [or] (B) the frame or receiver of any such weapon.” The frame or receiver
    is defined by regulation as the “part of a firearm which provides housing for the
    hammer, bolt or breechblock, and firing mechanism, and which is usually threaded at
    its forward portion to receive the barrel.” 27 C.F.R. § 478.11. Burning Breast argues
    that, because the government did not prove the upper receiver traveled in interstate
    commerce, the evidence was insufficient to convict him of being a felon in possession
    of a firearm.
    The dissent, and Burning Breast, focus exclusively on whether the lower
    receiver is a receiver within the regulatory definition of receiver and whether the
    -5-
    government had to prove the upper receiver also traveled in interstate commerce.
    Those issues are simply red herrings under the circumstances of this case. The dissent
    mistakenly asserts that if the lower receiver is not a “receiver” under the regulation,
    it cannot be a firearm. Consistent with 18 U.S.C. § 921(a)(3), the jury was instructed,
    in relevant part, that a firearm includes:
    1.     Any weapon which will or is designed to or may readily be
    converted to expel a projectile by the action of an explosive; or
    2.     The frame or receiver of any such weapon; . . .
    Special Agent Fair explained to the jury that “[t]here’s more than one definition
    under federal law for a rifle or a firearm.” A frame or receiver is simply one way to
    meet the definition. Another way is if the weapon will, is designed to, or may readily
    be converted to expel a projectile by the action of an explosive. Notwithstanding the
    lack of evidence establishing the upper receiver had, in fact, been swapped out, there
    was no evidence that at any point the firearm was anything but a weapon that could,
    or was designed to, or may readily be converted to expel a projectile by the action of
    an explosive. Here, it is immaterial whether there was proof that the upper receiver
    traveled in interstate commerce when the evidence established a completed rifle
    capable of being shot traveled in interstate commerce prior to Burning Breast’s
    possession of it.
    As the government argued during closing arguments, the uncontroverted
    evidence established this AR-15 style rifle was a firearm under the first part of the
    statutory definition because it was capable of being shot and no evidence was
    presented to dispute this testimony. The government could meet its burden in a
    manner broader than the limitation imposed by the dissent, which requires proof that
    the upper and lower halves of the receiver traveled in interstate commerce.
    -6-
    The trial transcript refutes the dissent’s characterization of the government’s
    case as relying solely on the receiver traveling in interstate commerce. The
    government specifically questioned Special Agent Fair as to whether the entire firearm
    traveled in interstate commerce:
    Q:     If this firearm was taken to a dealer in Nebraska and then later
    recovered in South Dakota, does it meet the interstate nexus?
    A:     Yes it does. Traveled interstate commerce.
    (Trial Tr. Vol. II p. 86). During cross-examination, Burning Breast’s counsel spent
    significant time questioning Special Agent Fair about Burning Breast’s gun, and
    whether certain parts may have been swapped out or personalized. He also questioned
    Special Agent Fair about the definition of “receiver” in the ATF regulations, and
    whether Special Agent Fair was able to trace the upper receiver in this case. Whether
    the upper receiver could be traced with certainty to establish it traveled in interstate
    commerce was the defense theory of the case, not a theory propounded by the
    government or exclusively relied on to prove the charge. Special Agent Fair
    maintained throughout his testimony that the finished firearm traveled in interstate
    commerce:
    A:     I will tell you that I do not know who made the upper. . . . But the
    lower is manufactured by LW Schneider in the State of Illinois;
    shipped to Massachusetts as a complete firearm manufactured in
    Massachusetts; shipped to Lipsey’s in Baton Rouge, Louisiana;
    shipped to Nebraska; and found here in South Dakota.
    Q:     That’s not this firearm, is it?
    A:     This is a firearm. And this firearm transported – was transported
    in interstate commerce.
    -7-
    (Trial Tr. Vol. II p. 107). The government reiterated its position on redirect when
    Special Agent Fair confirmed his opinion that the finished firearm traveled in
    interstate commerce.
    Q:     [I]t was your testimony that that was a complete firearm, meaning
    that the entire firearm was manufactured by Smith & Wesson?
    A:     Correct. At one point this was -- the serialized receiver frame was
    part of a complete firearm, sold as a firearm, manufactured in the
    State of Illinois and the State of Massachusetts, to be a whole and
    a functioning firearm.
    (Trial Tr. Vol. II p. 110-11). And the Government argued during rebuttal closing
    argument by specifically asking the jury to find that the firearm was ‘a completed rifle
    when it left Massachusetts.’” (Trial Tr. Vol. II p. 188).
    Viewing the evidence in the light most favorable to the verdict, as we must, we
    conclude the evidence in the record is sufficient for the jury to find that Burning
    Breast’s finished rifle meets the first part of the definition of firearm as set forth in
    § 921(a)(3). The jury apparently rejected Burning Breast’s defense theories. That
    Burning Breast might have “personalized” the rifle by adding a scope or light, or by
    partially painting it blue, does not in itself negate its status as a firearm capable of
    being shot. Whether the finished rifle Special Agent Fair traced and testified about
    at trial is the firearm later found in Burning Breast’s possession is a fact question for
    the jury to decide, not a legal question for the court. Unlike the dissent, we believe
    there was sufficient evidence from which the jury could draw a reasonable inference,
    beyond a reasonable doubt, that the finished rifle traveled in interstate commerce
    arriving in Burning Breast’s possession unchanged.
    The jury was properly instructed that the interstate commerce element of the
    offense is satisfied if the firearm was transported in interstate commerce “at some
    time during or before the defendant’s possession of it.” See Eighth Circuit Manual
    -8-
    of Model Jury Instructions (Criminal) 6.18.922B (2017). The jury could reasonably
    infer from the evidence that the rifle in question was at all times a fully functioning
    firearm that traveled in interstate commerce before Burning Breast’s possession of it.
    Burning Breast’s challenge to the fourth element regarding his knowledge of
    his status as a prohibited person also fails. The court received into evidence the
    judgment, plea agreement, and plea transcript from Burning Breast’s prior felony
    conviction, which established Burning Breast’s status as a prohibited person. “While
    Rehaif makes clear that the government must prove that a defendant knew he was in
    the category of persons prohibited under federal law from possessing firearms, Rehaif
    did not alter the ‘well-known maxim that ‘ignorance of the law’ (or a ‘mistake of
    law’) is no excuse.’” United States v. Robinson, 
    982 F.3d 1181
    , 1187 (8th Cir. 2020)
    (quoting Rehaif, 
    139 S. Ct. at 2198
    ).
    Burning Breast makes two arguments regarding his belief that his right to
    possess firearms had been restored. He first argues mistake of law. Burning Breast
    asserts that he erroneously, but genuinely, believed he no longer qualified as a
    prohibited person because his gun rights were restored under tribal law. See 18
    U.S.C. § 921(a)(20) (stating that convicted felons are not prohibited from possessing
    firearms if their civil rights had been restored). But, because Burning Breast’s prior
    conviction was under federal law, only a restoration of rights under federal law, not
    tribal law, qualifies. See Beecham v. United States, 
    511 U.S. 368
    , 373–74 (1994).
    Accordingly, Burning Breast’s mistake of law argument is unavailing. See Robinson,
    982 F.3d at 1187.
    Second, Burning Breast claims mistake of fact, arguing he erroneously, but
    genuinely, believed that his conviction had been expunged or he had received a
    presidential pardon. See 18 U.S.C. § 921(a)(20). For support, Burning Breast points
    to record evidence indicating he voluntarily revealed his gun ownership to police and
    told police that, when he had applied to the Navy, the Navy had no record of his prior
    -9-
    conviction. When an officer informed Burning Breast that only a presidential pardon
    could excuse his prior felony conviction, Burning Breast responded “well, that must
    have happened.” Burning Breast did not testify at trial and points to no direct
    evidence supporting his alleged belief. The evidence Burning Breast offered to
    support his alleged belief that he was not a prohibited person is insufficient for us to
    conclude that “no reasonable jury could have found guilt beyond a reasonable doubt.”
    See Mabery, 686 F.3d at 598.
    Finally, Burning Breast argues the jury instructions were improper on the
    questions of interstate nexus and his knowledge of being a prohibited person. We
    review the rejection of a defendant’s proposed instruction for abuse of discretion,
    United States v. Vore, 
    743 F.3d 1175
    , 1181 (8th Cir. 2014), and we review de novo
    the district court’s interpretation of the law, United States v. Farah, 
    899 F.3d 608
    , 614
    (8th Cir. 2018). While a defendant is entitled to a theory of defense instruction if it
    is timely requested, is supported by the evidence, and is a correct statement of the
    law, a defendant is not entitled to particular wording if the instruction actually given
    by the trial court adequately and correctly covers the substance of the requested
    instruction. United States v. Solis, 
    915 F.3d 1172
    , 1178 (8th Cir. 2019) (cleaned up).
    In other words, there is no abuse of discretion if the instructions “as a whole, by
    adequately setting forth the law, afford counsel an opportunity to argue the defense
    theory and reasonably ensure that the jury appropriately considers it.” United States
    v. Gilmore, 
    968 F.3d 883
    , 886 (8th Cir. 2020) (quoting United States v. Christy, 
    647 F.3d 768
    , 770 (8th Cir. 2011)).
    The district court accurately instructed the jury on the definitions of “firearm”
    and “receiver.” Burning Breast was able to argue to the jury his theory that the
    firearm did not travel in interstate commerce. We find no error or abuse of discretion
    as to the interstate nexus element. Likewise, the jury was properly instructed on the
    elements of the crime in a manner that tracked the statute and was consistent with
    Rehaif:
    -10-
    The government must prove, beyond a reasonable doubt, both that the
    defendant was convicted of a felony offense and that the defendant knew
    that he had a felony conviction at the time he allegedly possessed a
    firearm that had traveled in interstate or foreign commerce. That is, the
    government must prove beyond a reasonable doubt that the defendant
    knew of his status as a person previously convicted of a felony.
    As to the issue of expungement or restoration of civil rights, the court
    instructed the jury as follows:
    Any conviction which has been expunged, or set aside or for which a
    person has been pardoned or has had civil rights restored shall not be
    considered a conviction for purposes of the felon in possession of a
    firearm charge, unless such pardon, expungement, or restoration of civil
    rights expressly provides that the person may not . . . possess, or receive
    firearms. Therefore, it is a defense to the charge of a felon in possession
    of a firearm that the defendant had his civil rights substantially restored.
    . . . However, if a defendant’s conviction was under federal law, no state
    or tribe has the authority to expunge, set aside, or pardon such a prior
    federal felony conviction.
    This instruction was an accurate statement of the law and maintained Burning
    Breast’s ability to argue that he lacked the requisite knowledge of being a prohibited
    person. See Gilmore, 968 F.3d at 886. Burning Breast’s requested instruction would
    have added a fifth element to the crime, unsupported by the law. It was neither error
    nor abuse of discretion for the district court to decline to give Burning Breast’s
    requested instruction on knowledge.
    III.   CONCLUSION
    For the foregoing reasons, we affirm the district court’s judgment.
    -11-
    KOBES, Circuit Judge, dissenting.
    Contrary to 18 U.S.C. §§ 921(a)(3) and 922(g)(1), the court does not require
    proof beyond a reasonable doubt that a firearm or its receiver moved across state
    lines. Instead, it upholds a verdict backed by little more than an ATF agent’s
    mistaken testimony that a single gun part, an AR-15 lower receiver, is a firearm under
    ATF regulations. It is not. Because the Government failed to satisfy even its own
    understanding of what the law required, I think the evidence was insufficient. I
    respectfully dissent.
    The relevant evidence in this case came from one ATF expert witness. His
    testimony was based on ATF records that traced one serialized part on Burning
    Breast’s gun: the lower receiver. The records showed that the lower receiver was
    made in Illinois and shipped to Massachusetts, where it was assembled with other
    parts into a Smith & Wesson M&P 15, an AR-15-style rifle. The Massachusetts rifle
    with the traced lower receiver was shipped to Louisiana and sold by a dealer in
    Nebraska to “Arlene Paulson of Mission, South Dakota” in 2014. Trial Tr. 86. Five
    years later, police found the lower receiver on Burning Breast’s gun.
    Given these facts, there are two ways the Government could get a conviction.
    First, it could have proven that the lower receiver found on Burning Breast’s gun is
    a “receiver,” and so a “firearm” as a matter of law. 18 U.S.C. § 921(a)(3)(B). That
    was what the ATF agent repeatedly told the jury,3 and that was the Government’s
    3
    The ATF agent’s testimony in this case is problematic. The court misreads the
    trial transcript when it concludes that the ATF agent “maintained throughout his
    testimony that the finished firearm traveled in interstate commerce,” Maj. Op. at 7.
    A deeper review of the record shows he did no such thing. The ATF agent incorrectly
    told the jury several times that the lower receiver alone was itself a firearm under
    ATF regulations. See, e.g., Trial Tr. 82–83 (“So this frame or receiver [referring to
    the lower receiver] . . . . itself is a firearm. That firearm was shipped to
    -12-
    theory at trial. See, e.g., Trial Tr. 188 (“[W]e’re talking about the upper receiver and
    the lower receiver. That was a complete firearm.”); see also id. (“Maybe it was just
    the lower receiver . . . . Even then, the interstate nexus requirement is met.”). There
    is just one problem: an AR-15’s lower receiver does not meet the Government’s own
    definition of a “receiver.”
    To be a “receiver,” ATF regulations require the part to “provide[] housing for
    the hammer, bolt or breechblock, and firing mechanism.” 27 C.F.R. § 478.11. But
    only two of those are in an AR-15 lower receiver. See Trial Tr. 97–99. The third is
    in an AR-15 upper receiver, and the gun can’t shoot without both receivers.4 If the
    lower receiver is not a receiver under the regulation and if it cannot perform the
    function of a “receiver,” then it is not a receiver under § 921(a)(3)(B). That means
    an AR-15 lower receiver is not a “firearm,” and the Government’s theory at trial was
    a non-starter.
    The Government could also have proven that Burning Breast’s complete rifle
    moved across state lines. United States v. Shelton, 
    66 F.3d 991
    , 992 (8th Cir. 1995)
    Massachusetts where it was assembled as a finished rifle . . . .”). The ATF agent
    doubled down on his error when he told the jury again that the lower receiver “is a
    firearm” that “was transported in interstate commerce,” Trial Tr. 107, and that
    complete receivers only “usually,” but do not have to, house the bolt—even though
    housing for the bolt is listed in 27 C.F.R. § 478.11 as an element of a “receiver.”
    Trial Tr. 108–09. And at the close of cross-examination, he repeated that the “part
    [that was] manufactured in the State of Illinois,” i.e., the lower receiver alone, “is the
    firearm.” Trial Tr. 113. This misstated the ATF regulation and was materially
    misleading.
    4
    The lower receiver of an AR-15-style rifle “provides housing for the hammer
    and the firing mechanism.” United States v. Rowold, 
    429 F. Supp. 3d 469
    , 471 (N.D.
    Ohio 2019). The lower receiver does not house the rifle’s bolt—which is instead
    housed by the upper receiver—and the rifle cannot fire without both halves of the
    complete receiver. 
    Id.
    -13-
    (per curiam).5 But the Government did not support that theory at trial.6 It based its
    entire argument that the whole rifle moved interstate on a single interchangeable
    component—a component that is not a firearm under § 921(a)(3) because it is not a
    weapon. The court nonetheless concludes the Government carried its burden, saying
    that “[t]he jury could reasonably infer from the evidence that the rifle in question was
    at all times a fully functioning firearm that traveled in interstate commerce before
    Burning Breast’s possession of it.” Maj. Op. at 9.7
    I grant that Burning Breast possessed a functional rifle. But it is not so clear
    that a jury could reasonably infer that it traveled in interstate commerce. In order for
    5
    Other courts have adopted the reasonable rule that it is enough to prove that
    a gun’s “principal parts” moved in interstate commerce. United States v. Verna, 
    113 F.3d 499
    , 503 (4th Cir. 1997).
    6
    The court disagrees. It points to the Government’s closing argument, where
    the Government asked the jury to find that Burning Breast’s rifle was “a completed
    rifle when it left Massachusetts.” Maj. Op. at 8 (quoting Trial Tr. 188). But, as I
    explain below, the Government introduced no evidence about the whole rifle. The
    Government’s closing argument either advanced a last-minute position it never
    supported with evidence, or was based on the mistaken belief that the lower receiver
    was itself a complete firearm as a matter of law. Regardless, the Government’s
    closing argument cannot whisk sufficient evidence into existence.
    7
    The court overplays its hand when it casts this as a simple case where the ATF
    traced a “finished rifle” across state lines and that same rifle was found in the
    defendant’s possession. Maj. Op. at 8. To be clear, the ATF did not trace a rifle. See
    Trial Tr. 108–09 (Q: “The trace doesn’t tell you where any of the rest of the
    components of this gun [besides the lower receiver] came from, does it?” A: “No.
    The trace just identifies the serialized part on the firearm . . . .”). As the court itself
    recognizes, the only part that was serialized on Burning Breast’s rifle was the lower
    receiver. Maj. Op. at 3. So no rifle was ever traced, and all the evidence of interstate
    travel concerns just one component. The only evidence about whether the whole rifle
    traveled anywhere is Burning Breast’s mother’s testimony that neither she nor her son
    took the gun out of South Dakota. Trial Tr. 65–66.
    -14-
    an inference to be reasonable, there must be some evidence to support it. But there
    is no evidence that anything other than the lower receiver moved in interstate
    commerce. The ATF agent admitted as much. Trial Tr. 108 (explaining that “there
    is no way to know” where any part on the gun besides the lower receiver came from).
    Even the Government conceded as much. Trial Tr. 188 (“There is no way to know
    whether that upper or lower receiver was swapped out.”). The only thing tying
    Burning Breast’s rifle to the Massachusetts rifle was the lower receiver. If this were
    a typical case with evidence that (1) a functional firearm that was indisputably stock
    from an out-of-state manufacturer; (2) a complete receiver; or (3) the principal parts
    of an assembled rifle traveled in interstate commerce, the evidence may have been
    enough. But that kind of evidence was not presented here.
    In fact, the evidence here made it less likely that Burning Breast’s rifle was the
    Massachusetts rifle. The ATF agent told the jury that AR-15 parts “are mix and
    match,” Trial Tr. 102, and that “there is [a] hobby industry, cottage industry about
    making these things your own.” Trial Tr. 89. Burning Breast’s mother testified that
    because her son personalized another rifle as a teenager, he could have built this rifle
    himself from components he bought. While she did not know how Burning Breast
    got the rifle—or, critically, whether it was a complete, stock rifle at that time—she
    saw her son add parts to it in between the short-term loans she made when he offered
    the rifle to her as collateral.
    The Government did not dispute that testimony, and even said that it was not
    “clear exactly [at] what point [Burning Breast] came into possession of that firearm.”
    Trial Tr. 165. After examining Burning Breast’s rifle again at trial, the ATF agent
    agreed that it was different from a stock M&P 15: many of the stock parts of an M&P
    15 were either not on the gun at all or had been “swapped out.”8 Trial Tr. 111. Plus,
    8
    The ATF agent’s answer presumed that Burning Breast’s rifle was the
    Massachusetts rifle and that Burning Breast “swapped out” the parts on it, leaving
    -15-
    the ATF agent remarked that the upper receiver and handguard were painted a
    different color than the rest of the gun—and he said that while he did not know who
    made either part, he could have found out who made the upper receiver.
    When the ATF agent was finally asked whether Burning Breast’s rifle was a
    different gun than the Massachusetts rifle, the agent pointed to the lower receiver in
    front of him and told the jury that he knew they were the same because “the frame or
    receiver, [the] serialized part, this is the firearm . . . . I’m talking about the frame or
    receiver.” Trial Tr. 113. That is, the ATF agent told the jury that the only part that
    mattered in this case was the lower receiver because the lower receiver is itself a
    firearm. He was wrong. And because of that mistake, he did not trace any other part.
    This is not a case where someone merely “add[ed] a scope or light” to a pre-existing
    stock firearm. Maj. Op. at 8. This is a complete lack of evidence that anything other
    than one part on Burning Breast’s rifle traveled in interstate commerce.
    The court struggles to find anything in the record that could make the inference
    that Burning Breast’s rifle moved across state lines reasonable. It instead approvingly
    quotes the ATF agent’s testimony that “[t]his is a firearm,” and that “this firearm
    transported—was transported in interstate commerce.” Maj. Op. at 7 (quoting Trial
    Tr. 107). But the court’s quote proves my point: it is clear and unambiguous from
    the surrounding testimony that the ATF agent was answering questions about the
    “lower [receiver]” and told the jury that single part was a “complete firearm” when
    he said “[t]his is a firearm.” Trial Tr. 107; see also n.1, supra.
    just the original lower receiver on the rifle. But the agent could not have known that
    the rifle in front of him was an M&P 15 from the start, let alone that it was the same
    M&P 15 that originally contained the lower receiver. All he knew for certain was (1)
    that Burning Breast’s rifle had an M&P 15 lower receiver on it that crossed state
    lines; and (2) that Burning Breast’s rifle was missing other parts that would be found
    on a stock M&P 15. That makes it less likely that Burning Breast’s rifle was the
    Massachusetts rifle.
    -16-
    The court also points to the ATF agent’s answer to a hypothetical scenario. See
    Maj. Op. at 7. It is of course true, as the ATF agent said, that if a firearm crosses over
    state lines, it “meet[s] the interstate nexus [requirement].” Id. (quoting Trial Tr. 86).
    But his testimony there didn’t answer the critical question of whether Burning
    Breast’s rifle was the same gun that originally contained the lower receiver and
    crossed state lines. The Government had to show that it was the same gun in order
    to prove that Burning Breast’s entire gun moved in interstate commerce. But none
    of the Government’s evidence ever drew that connection.
    Finally, the court relies on the ATF agent’s testimony that “at one point . . . the
    [lower receiver] was part of a complete firearm” to conclude that the Government
    showed that Burning Breast’s entire rifle traveled in interstate commerce. Maj. Op.
    at 9 (quoting Trial Tr. 111). But saying that the lower receiver was once a part of the
    Massachusetts rifle does not establish that Burning Breast’s gun is that rifle. That is
    especially true when the ATF agent had already acknowledged that he didn’t know
    the origin of any other part on Burning Breast’s gun and the other evidence in this
    case all tended to show that the rifles were not the same. To the extent the ATF
    agent’s testimony could be read as opining about the travel history of Burning
    Breast’s whole rifle, his prior statements revealed that he had no basis to do that.
    Without context, the court’s selected quotes make it seem like the ATF agent
    knew Burning Breast’s rifle was the Massachusetts rifle and it moved in interstate
    commerce. But the reality is that the ATF agent tried to bootstrap his limited
    knowledge about a single part into evidence about the whole rifle. The record does
    not support a reasonable inference that Burning Breast’s gun moved across state lines.
    The Government’s whole case hinged on the lower receiver. That part is not
    a “receiver” under the regulation. And as for the statute, the lower receiver is not a
    weapon that will or is designed to shoot a bullet on its own. So it fails to meet the
    definition of a “firearm” in 18 U.S.C. § 921(a)(3)(A). And the Government presented
    -17-
    no evidence about whether the lower receiver “may readily be converted” to shoot a
    bullet. § 921(a)(3)(A); see also United States v. Mullins, 
    446 F.3d 750
    , 755–56 (8th
    Cir. 2006) (upholding a conviction where expert testimony established that the
    defendant’s starter gun could be modified to shoot bullets in “less than an hour” with
    common tools and so that gun “may be considered ‘readily convertible’”). So I would
    apply the rule of lenity and conclude that a lower receiver is not a “firearm” under the
    statute, either. Without more evidence that the firearm Burning Breast possessed
    traveled in interstate commerce, he could not have been convicted under § 922(g)(1)
    merely because he possessed a single interchangeable part that traveled across state
    lines.
    There are other problems with this case that go to the core of separation of
    powers. An executive agency is not empowered to write and enforce “[its] own
    criminal code.” Gundy v. United States, 
    139 S. Ct. 2116
    , 2131 (2019) (Gorsuch, J.,
    dissenting); see also Aposhian v. Wilkinson, 
    989 F.3d 890
    , 898–99 (10th Cir. 2021)
    (Tymkovich, J., dissenting from denial of rehearing). As Judge Tymkovich
    explained, “[w]hen an agency can define criminal conduct, there is a genuine concern
    that ‘if [they] are free to ignore the rule of lenity, the state could make an act a crime
    in a remote statement issued by an administrative agency.’” 
    Id. at 899
     (quoting
    Carter v. Welles-Bowen Realty, Inc., 
    736 F.3d 722
    , 732 (6th Cir. 2013) (Sutton, J.,
    concurring)). Justice Gorsuch recently expressed the same concern, asking how
    “ordinary citizens [can] be expected to keep up” if we defer to the agency in cases
    like this. Guedes v. Bureau of Alcohol, Tobacco, Firearms, and Explosives, 
    140 S. Ct. 789
    , 790 (2020) (Gorsuch, J., statement regarding denial of certiorari).
    Not only does the Government try to evade the rule of lenity by defining a term
    in a criminal statute, the court also lets it enforce that interpretation without batting
    an eye, dismissing the critical issue as a “red herring[].” Maj. Op. at 6. The
    Government also got away with misleading the jury about its own interpretation of
    the statute. Despite the ATF agent’s knowledge that the lower receiver did not
    -18-
    contain all three components the ATF requires in a “receiver,” he repeatedly called
    that single part “the firearm,” and the Government referred to that testimony several
    times in closing arguments. See n.1, supra. The agent’s testimony might have
    succeeded in getting the jury to speculate that a firearm crossed state lines, but
    “[s]peculation cannot be the basis for proof in the civil context[,] much less the basis
    for proof beyond a reasonable doubt.” United States v. Groves, 
    470 F.3d 311
    , 324
    (7th Cir. 2006) (reversing a § 922(g) conviction because ATF agent expert testimony
    was too vague to establish that a gun traveled across state lines beyond a reasonable
    doubt).
    As Justice Scalia reminded us, “legislatures, not executive officers, define
    crimes” and “[c]riminal statutes are for the courts, not the Government, to construe.”
    Whitman v. United States, 
    135 S. Ct. 352
    , 352–53 (2014) (Scalia, J., dissenting from
    denial of certiorari) (cleaned up) (citation omitted). Deferring to the prosecuting
    branch’s interpretations of criminal statutes “replac[es] the doctrine of lenity with a
    doctrine of severity.” Crandon v. United States, 
    494 U.S. 152
    , 178 (1990) (Scalia,
    J., concurring in the judgment). And that is particularly salient in areas of criminal
    law where it “seems agencies change their statutory interpretations almost as often
    as elections change administrations.” Guedes, 140 S. Ct. at 790 (Gorsuch, J.,
    statement regarding denial of certiorari).9
    Had the Government proven that Burning Breast’s rifle or its complete receiver
    traveled in interstate commerce rather than just one part, that evidence may have been
    sufficient. See United States v. Hill, 
    835 F.3d 796
    , 800 (8th Cir. 2016) (holding that
    “ammunition assembled from components which had traveled in interstate commerce
    was in commerce for purposes of 18 U.S.C. § 922(g)(1)”). That wouldn’t be hard to
    9
    See, e.g., Definition of “Frame or Receiver” and Identification of Firearms, 86
    Fed. Reg. 27720 (proposed May 21, 2021) (expanding the definition of “receiver” to
    include partial or incomplete receivers that “may readily be completed, assembled,
    converted, or restored to a functional state.”).
    -19-
    show. But where the Government fails to supply proof of a defendant’s guilt beyond
    a reasonable doubt and the jury still convicts, we should reverse the conviction.
    ______________________________
    -20-