Smith v. United States
The Supreme Court ruled that a person charged with conspiracy — not the government — bears the burden of proving he withdrew from the conspiracy early enough to escape prosecution under the statute of limitations.
The unanimous decision means defendants raising a withdrawal defense must convince the jury themselves, rather than forcing prosecutors to prove the defendant stayed active in the scheme.
“It is his withdrawal that must be active, and it was his burden to show that.”
The Court's closing statement placing the burden of proving withdrawal on the defendant.
How it got here: A jury convicted Smith after being told he bore the burden of proving withdrawal; the D.C. Circuit affirmed, and the Supreme Court agreed to review the burden-of-proof question.
The Case in Depth
What happened
Calvin Smith was charged along with 16 others in a long-running drug distribution and racketeering conspiracy in Washington, D.C. that also involved acts of violence. Smith spent the final six years of the alleged conspiracy in prison on an unrelated conviction and argued that he had withdrawn from the conspiracy before the five-year window for prosecuting him had run out.
The question before the Court
If someone charged with conspiracy claims he quit the plot before the time limit for prosecution ran out, does he have to prove that himself, or must the government disprove it?
The Court's answer
The defendant has to prove it himself. The Court ruled that requiring a conspiracy defendant to prove he withdrew from the scheme does not violate due process, because withdrawal doesn't dispute that he committed the crime — it only limits how long he stays responsible for what his co-conspirators do afterward. Since withdrawal doesn't negate any element of conspiracy, the Constitution doesn't force the government to disprove it beyond a reasonable doubt.
The Court also found that Congress never assigned this burden to the government in the relevant conspiracy statutes, so the traditional rule applies: defendants prove their own affirmative defenses. That's especially sensible here, the Court noted, because only the defendant really knows what steps, if any, he took to cut ties with the conspiracy.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Defendants in conspiracy cases nationwide — a common charge in drug and racketeering prosecutions — must now shoulder the burden of proving they cut ties with a criminal scheme early enough to avoid prosecution, rather than relying on prosecutors to disprove withdrawal. This resolves a split among appeals courts and makes it harder for defendants to escape liability by claiming they quietly stepped away.
What changes now
This is a final merits ruling that resolves the legal question nationwide; it does not send the case back for further factfinding on the withdrawal issue itself, since the jury had already rejected Smith's withdrawal claim under the burden the Court just approved. The D.C. Circuit's judgment affirming Smith's conspiracy convictions stands, though other unrelated murder counts in his case remain on remand for a separate ineffective-assistance hearing.
How the Court got there
The legal reasoning, step by step
- The Court asked whether requiring the defendant to prove withdrawal violates due process, which requires the government to prove every element of a crime beyond a reasonable doubt but does not require it to disprove affirmative defenses that merely excuse conduct rather than negate an element of the offense.
- The Court explained that conspiracy is complete once two people agree to commit a crime and the defendant knowingly joins; withdrawal doesn't dispute that this agreement and membership happened, it only cuts off responsibility for what happens afterward.
- Because withdrawal presupposes guilt rather than denying it, and because a statute-of-limitations defense based on withdrawal likewise doesn't question whether the underlying conduct was criminal, neither defense triggers a constitutional requirement that the government disprove it.
- Turning to the specific conspiracy statutes at issue, the Court found that Congress had not spoken to who bears the burden of proving withdrawal, so the traditional common-law rule applies by default: the defendant must prove his own affirmative defenses.
- The Court reasoned that practical fairness supports this rule too, since the defendant alone knows what steps he took to distance himself from the conspiracy, while it would be nearly impossible for the government to prove that no such withdrawal ever occurred.
- Applying this to the timing issue, the Court held that the government only had to prove the conspiracy itself continued into the limitations period, while the defendant still had to prove any individual withdrawal that would place him outside that period.