Procedural Forfeiture Limits the Record on Appeal in § 922(g)(1) Second Amendment As-Applied Cases

I. Introduction

United States v. Luna (5th Cir. Aug. 24, 2026) arose from a federal indictment charging Raymond Andrew Luna under 18 U.S.C. § 922(g)(1) (felon in possession of a firearm). Luna’s sole predicate felony was a controlled-substance conviction described in the appellate record as simple possession. Luna brought an as-applied Second Amendment challenge, and the district court dismissed the indictment.

After dismissal, the Government sought reconsideration and, for the first time, proffered records (including a police report) suggesting the underlying conduct looked like drug trafficking. The district court refused to consider the late-submitted materials and denied reconsideration. The Government appealed, urging the Fifth Circuit to treat Luna as a trafficker and uphold § 922(g)(1) as applied.

The appeal thus presented intertwined issues: (1) the procedural question of what materials an appellate court may consider when they were not timely presented (and when the appellant fails to brief the correct standard-of-review argument), and (2) the substantive Second Amendment question whether a simple-possession felony can justify disarmament under § 922(g)(1) in this Circuit.

II. Summary of the Opinion

The Fifth Circuit affirmed the dismissal. The panel held that it could not consider the Government’s newly offered “drug trafficking” narrative because the Government forfeited the argument it needed to win procedurally: it did not argue in its opening brief that the district court abused its discretion by refusing to consider the late-submitted conviction materials.

With the Government’s late materials excluded, the predicate offense remained only “simple possession,” which the court stated is insufficient to support disarmament under § 922(g)(1) under United States v. Hembree. The panel also rejected the Government’s attempt to rely on (a) Founding-era tobacco laws as a new historical analogue, and (b) the fact that Luna was under indictment for a firearm offense at the relevant time.

III. Analysis

A. Precedents Cited (and How They Shaped the Decision)

1. Record-limiting, reconsideration, and forfeiture doctrine

  • Templet v. HydroChem Inc., 367 F.3d 473 (5th Cir. 2004): The panel drew the standard-of-review framework from Templet: the standard depends on whether the district court considered the newly attached materials. Because the district court refused to consider them, review is for abuse of discretion.
  • United States v. Jarman, 847 F.3d 259 (5th Cir. 2017): Reinforced the default principle that denial of a motion to reconsider is generally reviewed for abuse of discretion.
  • Smith v. Sch. Bd. of Concordia Par., 88 F.4th 588 (5th Cir. 2023): Provided the operative forfeiture rule. The Government’s failure to “address the district court’s analysis and explain how it erred” in its opening brief forfeited any claim that the district court abused its discretion by rejecting the late-submitted evidence. This became dispositive: without that properly briefed procedural argument, the Government could not unlock consideration of the new materials.
  • Craig v. Bisignano, 157 F.4th 773 (5th Cir. 2025), and Palasota v. Haggar Clothing Co., 499 F.3d 474 (5th Cir. 2007): These cases foreclosed the Government’s effort to reframe the appeal as de novo review and salvage the documents through judicial notice. The panel emphasized the ordinary rule: appellate courts generally should not take judicial notice of documents available earlier but not tendered, and review is “limited” to what was properly before the district court when it decided the case.
  • United States v. Clark, 148 F.4th 785 (5th Cir. 2025): The Government cited Clark to argue the Fifth Circuit can “look at the record amassed” by the parties. The panel distinguished Clark as inapposite because the Government there timely asserted the key fact in response to the motion to dismiss; here, it did not.

2. Substantive § 922(g)(1) / Second Amendment constraints in this Circuit

  • United States v. Hembree, 165 F.4th 909 (5th Cir. 2026): Hembree supplied the controlling substantive proposition the panel treated as settled: simple possession cannot support a § 922(g)(1) conviction (at least on this as-applied Second Amendment framing). Once the Government’s new “trafficking” materials were excluded, the case became an easy application of Hembree.
  • United States v. Kimble, 142 F.4th 308 (5th Cir. 2025): The Government invoked Kimble for the proposition that “Congress can categorically disarm individuals convicted of violent felonies like drug trafficking.” But Kimble only mattered if Luna could be treated as a trafficker—which depended on the excluded late materials.
  • United States v. Banuelos, No. 23-50731, 2026 WL 1195824 (5th Cir. May 1, 2026) (per curiam): Banuelos foreclosed the Government’s attempt to use Founding-era tobacco statutes as a “historical analogue” for disarming drug possessors by portraying them as participants in illicit marketplaces. The panel repeated Banuelos’s key point: those laws targeted conduct like “embezzling,” “smuggling,” and “forging,” not mere possession of tobacco.
  • United States v. Diaz, 116 F.4th 458 (5th Cir. 2024); United States v. Contreras, 125 F.4th 725 (5th Cir. 2025); United States v. Mitchell, 160 F.4th 169 (5th Cir. 2025): The panel relied on these cases for the principle that, for § 922(g)(1) purposes, the court evaluates whether the predicate felony conviction supports disarmament, not other contemporaneous accusations or broader “entire record” considerations.
  • United States v. Quiroz, 125 F.4th 713 (5th Cir. 2025): Cited to underscore that Congress has separately criminalized firearm receipt/transport by persons “under indictment” via 18 U.S.C. § 922(n), and that this Circuit has upheld § 922(n). But Luna was not charged under § 922(n), and the panel declined to use “under indictment” status as a backdoor justification for a § 922(g)(1) conviction.

3. The concurrence’s “doctrinal-friction” map (and why it matters)

Judge Willett’s concurrence does not alter the judgment, but it provides a structured diagnosis of an emerging conflict in Fifth Circuit § 922(g)(1) as-applied jurisprudence: whether courts may look beyond the fact of conviction to the underlying conduct. The concurrence discusses, among other cases, United States v. Diaz, United States v. Kimble, United States v. Contreras, and United States v. Morgan, and proposes a reconciliation: (1) Diaz/Kimble define which convictions enter the analysis (qualifying felonies), while (2) Contreras/Morgan address what may be examined about a qualifying conviction (including underlying conduct, when properly established).

Practically, Luna becomes a procedural cautionary tale inside that larger doctrinal uncertainty: even if underlying conduct can sometimes matter, the Government must timely present it and properly preserve the appellate argument.

B. Legal Reasoning

1. The decision is primarily procedural—and outcome-determinative

The panel’s reasoning proceeds in a strict sequence:

  1. Identify the proper standard of review under Templet: because the district court refused to consider the new materials, appellate review is abuse of discretion.
  2. Enforce briefing forfeiture under Smith: the Government did not argue in its opening brief that the district court abused its discretion by refusing the materials. Therefore the Government forfeited the gateway argument needed to expand the record.
  3. Reject end-runs via judicial notice/de novo reframing under Craig and Palasota: the court ordinarily confines itself to what was properly before the district court at decision time, especially when the documents were available earlier.
  4. Apply the Circuit’s substantive rule to the remaining record: with only simple possession left, Hembree forecloses § 922(g)(1) as applied.

2. Substantively, the panel narrows the Government’s available theories

The panel then cleans up three substantive “fallback” arguments:

  • “New analogue” (tobacco laws): rejected as previously rejected in Banuelos.
  • “Under indictment” status: rejected as irrelevant to § 922(g)(1) validity under Diaz/Contreras/Mitchell; also noted that Congress addressed that circumstance separately in § 922(n), and Luna was not charged under it.
  • “Trafficker-in-fact” theory: not reachable because the Government’s late evidence was excluded and, critically, the procedural issue was forfeited.

C. Impact

1. Immediate procedural impact: preservation and record-building

Luna reinforces that in Fifth Circuit § 922(g)(1) constitutional litigation, procedure can decide substance: the Government must (a) timely submit underlying-conduct evidence in the district court, (b) if it loses on admissibility/timeliness, brief the correct abuse-of-discretion argument on appeal, and (c) cannot typically rely on appellate judicial notice to cure omissions that were avoidable below.

2. Immediate substantive impact: simple possession remains insufficient (for now)

On the merits as framed by the panel, Luna extends the practical reach of United States v. Hembree: if the predicate is only “simple possession,” § 922(g)(1) is not constitutionally applicable in this Circuit’s current as-applied framework—absent a properly preserved, properly presented basis to treat the predicate as something else.

3. Broader doctrinal impact: the concurrence flags an unresolved intra-circuit tension

Judge Willett’s concurrence underscores that district courts are operating amid unsettled guidance about when, and how, underlying predicate conduct can be used. The concurrence points to en banc review in United States v. Squire as a potential harmonizing event. Until then, Luna’s practical message is that parties should assume (and litigate as if) underlying facts might matter—but only if introduced on time and preserved correctly.

IV. Complex Concepts Simplified

  • § 922(g)(1) (“felon-in-possession”): A federal crime for possessing a firearm after being convicted of a crime punishable by more than one year.
  • Predicate felony: The prior conviction that makes the person a “felon” for purposes of § 922(g)(1).
  • As-applied Second Amendment challenge: The defendant does not argue the statute is unconstitutional in all circumstances, only unconstitutional as applied to him given his particular predicate conviction.
  • Motion for reconsideration: A request that the district court revisit an earlier ruling—generally disfavored when used to introduce evidence that could have been offered earlier.
  • Abuse of discretion vs. de novo: De novo means the appellate court decides the issue fresh. Abuse of discretion is highly deferential and asks whether the lower court’s decision fell outside permissible choices.
  • Forfeiture by inadequate briefing: Even a potentially valid argument can be lost if not properly developed in the opening appellate brief.
  • Judicial notice on appeal: A narrow doctrine allowing recognition of indisputable facts; it generally cannot be used to introduce documents that were available but not presented below.
  • Historical analogue: Under post-Bruen Second Amendment methodology, the government often argues that modern regulations are consistent with historical traditions by pointing to comparable historical regulations. Here, “tobacco laws” were offered as an analogue and rejected.

V. Conclusion

United States v. Luna is a procedurally driven affirmance with significant practical consequences. The Fifth Circuit held that the Government could not rely on late-submitted predicate-conduct materials—nor bypass that problem through de novo reframing or judicial notice—because it failed to brief the required abuse-of-discretion challenge in its opening brief. With only a simple-possession predicate remaining, United States v. Hembree foreclosed applying § 922(g)(1) to Luna, and the court rejected additional historical-analogue and “under indictment” theories.

The decision’s broader significance lies in what it signals for ongoing Second Amendment litigation in the Fifth Circuit: outcomes may turn as much on record development and appellate preservation as on contested constitutional theory, especially while the court continues to wrestle—openly, as Judge Willett’s concurrence illustrates—with the proper scope of fact-sensitive as-applied analysis under § 922(g)(1).