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Smith v. United States

No. 21-1576 SCOTUS · Decided Decided SCOTUS
Argued: Mar 28, 2023 Decided: Jun 14, 2023

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Mar 19, 2026

The Facts

Marcus Smith was convicted of participating in a conspiracy to distribute cocaine. He argued at trial that he had withdrawn from the conspiracy before a key date that would have triggered application of a mandatory minimum sentence based on a co-conspirator's later drug quantities. The district court instructed the jury that Smith bore the burden of proving his withdrawal, and he was convicted.

The Application

History

Smith's assertion that he had withdrawn from the cocaine conspiracy before the date triggering the mandatory minimum qualified as an affirmative defense, placing the burden on him to prove withdrawal by preponderance of the evidence rather than requiring the government to disprove it beyond a reasonable doubt. Under the Court's confirmation of established law, Smith was required to demonstrate either affirmative disclosure of his withdrawal to law enforcement or unequivocal communication of abandonment to his co-conspirators, mere cessation of involvement was insufficient. The district court's jury instruction correctly allocated this burden to Smith, and the Supreme Court's unanimous decision upheld that allocation, confirming that long-standing principles of affirmative defense burden allocation applied even where, as here, timing of withdrawal bore directly on sentencing exposure.

The Conclusion

**Decided January 23, 2023. Defendants bear the burden of proving conspiracy withdrawal.** The ruling settled a circuit split and confirms that withdrawal, as a true affirmative defense, does not shift the burden to the government to disprove it.

CourtSupreme Court of the United States
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SCOTUS TMR-b25eb8aa May 14, 2026

Case Analysis

Overview

The Supreme Court held unanimously in January 2023 that when a criminal defendant raises withdrawal from a conspiracy as an affirmative defense, the defendant, not the government, bears the burden of proving withdrawal by a preponderance of the evidence. Justice Sotomayor wrote for the Court, resolving a circuit split and confirming that long-standing principles governing affirmative defenses place the burden on the party asserting them.

Facts

Marcus Smith was convicted of participating in a conspiracy to distribute cocaine. He argued at trial that he had withdrawn from the conspiracy before a key date that would have triggered application of a mandatory minimum sentence based on a co-conspirator's later drug quantities. The district court instructed the jury that Smith bore the burden of proving his withdrawal, and he was convicted.

Issue

Whether a criminal defendant who asserts withdrawal from a conspiracy as an affirmative defense bears the burden of proving withdrawal, or whether the prosecution must disprove withdrawal beyond a reasonable doubt as an element of the offense.

Rule

Withdrawal from a conspiracy is an affirmative defense. Under well-settled federal common law, a defendant who asserts an affirmative defense bears the burden of proving it. Withdrawal requires an affirmative act to defeat the conspiracy. Either full disclosure to law enforcement or unequivocal communication of abandonment to co-conspirators. It does not merely negate the government's proof of the offense.

Analysis

Smith's assertion that he had withdrawn from the cocaine conspiracy before the date triggering the mandatory minimum qualified as an affirmative defense, placing the burden on him to prove withdrawal by preponderance of the evidence rather than requiring the government to disprove it beyond a reasonable doubt. Under the Court's confirmation of established law, Smith was required to demonstrate either affirmative disclosure of his withdrawal to law enforcement or unequivocal communication of abandonment to his co-conspirators. Mere cessation of involvement was insufficient. The district court's jury instruction correctly allocated this burden to Smith, and the Supreme Court's unanimous decision upheld that allocation, confirming that long-standing principles of affirmative defense burden allocation applied even where, as here, timing of withdrawal bore directly on sentencing exposure.

Conclusion

**Decided January 23, 2023. Defendants bear the burden of proving conspiracy withdrawal.** The ruling settled a circuit split and confirms that withdrawal, as a true affirmative defense, does not shift the burden to the government to disprove it.

Notes

OT2022. Added via SCOTUS bulk import 2026-05-14

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