Third Circuit Clarifies When “Intent to Distribute” Is “Sufficiently in Dispute” to Require a Lesser-Included Simple-Possession Instruction

Introduction

In United States v. Carlos Gascot Concepcion (3d Cir. Mar. 10, 2026), the Court of Appeals for the Third Circuit addressed when a defendant charged with possession with intent to distribute is entitled to a jury instruction on the lesser-included offense of simple possession under Federal Rule of Criminal Procedure 31(c).

The case arose from Concepcion’s arrest at the St. Thomas airport while traveling to Puerto Rico with a vacuum-sealed, brick-shaped package containing 1,009.48 grams of cocaine at 86.5% purity, concealed in luggage and marked with a label (“Psycho Bunny”). The government charged Concepcion with one count of possession with intent to distribute a Schedule II controlled substance. At trial, Concepcion claimed he intended to personally consume the entire kilogram and requested a lesser-included-offense instruction on simple possession. The District Court denied the request, the jury convicted, and Concepcion appealed, arguing that the denial was an abuse of discretion.

The Third Circuit affirmed, holding that no rational jury could find that Concepcion lacked intent to distribute given the quantity, purity, packaging, branding, and travel circumstances, coupled with the scant evidence of personal use.

Summary of the Opinion

The Third Circuit reiterated that a lesser-included instruction is required only when the evidence could support conviction on the lesser offense and acquittal on the greater. The court clarified that “sufficiently in dispute” does not mean any conflict manufactured by speculative testimony, and it does not require instruction where the differentiating element is indisputably established.

Applying that standard, the court held that Concepcion’s proffer (his father’s testimony about marijuana use) did not meaningfully place “intent to distribute” in dispute against overwhelming circumstantial evidence of distribution. The District Court therefore did not abuse its discretion by refusing the simple-possession instruction.

Analysis

Precedents Cited

1. The governing lesser-included framework

  • Gov't of V.I. v. Knight, 989 F.2d 619, 632 (3d Cir. 1993): The Third Circuit relied on this case for the core proposition that a lesser-included instruction is required only if the evidence could support a guilty verdict on either charge—and, crucially, only if a rational jury could convict on the lesser while acquitting on the greater. Knight is the opinion’s doctrinal anchor within the circuit.
  • Sansone v. United States, 380 U.S. 343, 349-50 (1965): Cited (via Knight) for the basic test and, importantly, for the policy caution (380 U.S. at 350 n.6) that courts should not invite juries to select between greater and lesser offenses to shape punishment—punishment being a judicial function.
  • Keeble v. United States, 412 U.S. 205, 208 (1973): Reinforces the “rational jury” requirement—i.e., the instruction is not automatic simply because a lesser offense exists in the abstract.
  • United States v. Smith, 21 F.4th 122, 133 (4th Cir. 2021): The Third Circuit adopted and operationalized the “sufficiently in dispute” phrasing and its two pathways: (1) “sharply conflicting testimony” on the differentiating element, or (2) a lesser-offense conclusion “fairly may be inferred” from the evidence. The court then added an important limitation: conflicts must be genuine and weighty, not speculative or conclusory.
  • Other circuits were cited to show broad agreement on the “rational jury”/“in dispute” approach: United States v. Brewster, 506 F.2d 62, 71 (D.C. Cir. 1974); United States v. Jaffal, 79 F.4th 582, 608 (6th Cir. 2023); United States v. McCullough, 348 F.3d 620, 627 (7th Cir. 2003); United States v. Smith, 990 F.3d 607, 613-14 (8th Cir. 2021); United States v. McVeigh, 153 F.3d 1166, 1198 n.21 (10th Cir. 1998). Their role here is primarily confirmatory: the Third Circuit positioned its clarification as consistent with a prevailing national standard.

2. Standard of review and instructional discretion

  • United States v. Flores, 454 F.3d 149, 156 (3d Cir. 2006): Supplies the abuse-of-discretion standard for reviewing refusal of a requested jury instruction, which materially shapes the appellate outcome: the question is not whether the appellate court might have instructed, but whether the trial court’s refusal fell outside permissible judgment.

3. Drug-specific intent-to-distribute inferences

  • United States v. Lacy, 446 F.3d 448, 454 (3d Cir. 2006): Establishes within the Third Circuit that simple possession is a lesser-included offense of possession with intent to distribute, and that the only differentiating element is the intent to distribute. This frames the “sufficiently in dispute” inquiry around a single question: intent.
  • United States v. Johnson, 302 F.3d 139, 149 (3d Cir. 2002): Supports evaluating circumstantial indicators of distribution (quantity, packaging, cash, weapons, distribution equipment). The Concepcion court used this as a checklist-like guide to what “intent” evidence looks like in practice.
  • United States v. Rodriguez, 961 F.2d 1089, 1092 (3d Cir. 1992): Provides the pivotal proposition that sufficiently large quantity alone can support an inference of intent to distribute. Concepcion’s kilogram quantity made this principle dispositive absent meaningful countervailing evidence.
  • Quantity-based intent cases from other circuits were cited to underscore that kilogram-scale cocaine typically implies distribution: United States v. Gaviria, 740 F.2d 174, 185 (2d Cir. 1984); United States v. Raffo, 587 F.2d 199, 201 (5th Cir. 1979); United States v. Phibbs, 999 F.2d 1053, 1065-66 (6th Cir. 1993); United States v. Puckett, 405 F.3d 589, 601 (7th Cir. 2005). These citations functioned as comparative validation that Concepcion’s facts sit well beyond the “personal use” margin.

4. Defendant’s attempted comparators (distinguished)

Concepcion argued that other courts have required simple-possession instructions even with substantial drug quantities. The Third Circuit rejected the analogy, noting the cited cases involved far smaller amounts and different fact patterns:

  • United States v. Latham, 874 F.2d 852, 863 (1st Cir. 1989)
  • United States v. Levy, 703 F.2d 791, 792 (4th Cir. 1983)
  • United States v. Burns, 624 F.2d 95, 99 (10th Cir. 1980)
  • United States v. Gibbs, 904 F.2d 52, 58-59 (D.C. Cir. 1995)

The court’s treatment signals that “quantity comparisons” are not abstract: they are calibrated to whether personal use remains a rational inference on the record presented.

Legal Reasoning

The opinion’s key doctrinal move is a clarification of the “sufficiently in dispute” threshold for lesser-included instructions:

  1. Not every conflict triggers an instruction. The court expressly cautioned that “sharply conflicting testimony” must be weighty enough to create a genuine conflict that a rational jury could credit—preventing defendants from “manufactur[ing] a ‘conflict’” through speculative or conclusory evidence.
  2. No instruction where the differentiating element is indisputable. Even if the lesser offense is conceptually available, the trial judge need not instruct when the record “indisputably establishes” the greater offense’s differentiating element. This preserves Sansone’s concern about inviting punishment-driven compromise verdicts.
  3. Application to intent-to-distribute. Because the only differentiator between simple possession and possession with intent to distribute is intent (Lacy), the court examined whether intent was genuinely contestable. It found it was not, for reasons including:
    • Quantity: Over one kilogram—enough by itself under Rodriguez.
    • Purity: 86.5% purity consistent with wholesale supply and potential “cutting” for resale profit.
    • Packaging and branding: Brick form, vacuum-sealed/wrapped, and marked “Psycho Bunny,” consistent with trafficking practices.
    • Travel context: Movement from St. Thomas to Puerto Rico, described as part of a distribution chain.
    • Paucity of personal-use evidence: Father testified to marijuana use, but there was no evidence Concepcion used cocaine at all.
  4. Role of expert testimony. Concepcion argued that much distribution evidence depended on the DEA agent’s testimony, which the jury could disregard. The court responded that the possibility the jury could disbelieve a witness does not erase that the testimony is part of the evidentiary “totality” the trial court may consider when deciding whether intent is “sufficiently in dispute.”

Impact

This decision’s practical effect is to tighten and clarify the conditions under which defendants in the Third Circuit can obtain a simple-possession instruction in intent-to-distribute prosecutions:

  • Gatekeeping against “manufactured disputes.” Trial courts are expressly empowered to assess whether defense testimony is substantial enough that a rational jury could credit it, rather than treating any contradiction as sufficient.
  • Quantity-driven cases become harder to downshift. Where drug quantity alone supports intent to distribute, defendants will generally need concrete, case-specific evidence of personal use (history of use of the same substance, paraphernalia consistent with personal use, credible consumption patterns, contemporaneous admissions, etc.) to put intent in genuine dispute.
  • Reduced “compromise verdict” risk. By emphasizing Sansone’s concern, the opinion discourages instructions that would function primarily as a jury “mercy” option where the elements of the greater offense are effectively established.
  • More predictable abuse-of-discretion review. The opinion supplies appellate-friendly language supporting trial court discretion when the record heavily favors distribution and the personal-use theory is thin.

Complex Concepts Simplified

  • Lesser-included offense (Rule 31(c)): A smaller offense whose elements are fully contained within the charged offense. Here, simple possession is “inside” possession with intent to distribute; adding “intent to distribute” makes it the greater offense.
  • “Sufficiently in dispute”: The key element separating the crimes must be meaningfully contestable on the evidence—not merely imaginable. Either there is a real evidentiary clash a rational jury could credit, or the lesser outcome fairly follows from the record.
  • “Rational jury” standard: The instruction is required only if a reasonable jury could logically convict on the lesser offense and acquit on the greater, based on the evidence—not on sympathy or punishment preferences.
  • Circumstantial proof of intent: Intent is rarely proven by direct confession; it is inferred from objective indicators like quantity, packaging, travel patterns, cash, and other trafficking markers.
  • Abuse of discretion: On appeal, the question is whether the trial judge’s decision fell outside the range of reasonable choices, not whether the appellate court would have made the same call.

Conclusion

United States v. Carlos Gascot Concepcion reinforces the Third Circuit’s lesser-included instruction doctrine while adding an important clarification: the “in dispute” requirement demands a genuine evidentiary contest, not a speculative one, and instructions are unwarranted where the differentiating element is effectively indisputable. In drug cases, especially those involving kilogram quantities and trafficking indicia, the decision signals that a simple-possession instruction will be denied absent concrete evidence that personal use is a rational verdict option.