Majority — Scalia J.
delivered the opinion of the Court.
Upon joining a criminal conspiracy, a defendant’s membership in the ongoing unlawful scheme continues until he withdraws. A defendant who withdraws outside the relevant statute-of-limitations period has a complete defense to prosecution. We consider whether, when the defendant produces some evidence supporting such a defense, the Government must prove beyond a reasonable doubt that he did not withdraw outside the statute-of-limitations period.
I—I
Petitioner Calvin Smith was indicted for crimes connected to his role in an organization that distributed cocaine, crack cocaine, heroin, and marijuana in Washington, D. C., for about a. decade. The 158-count indictment charged Smith and 16 alleged co-conspirators with conspiring to run, and
At issue here are Smith’s conspiracy convictions. Before trial, Smith moved to dismiss the conspiracy counts as barred by the applicable 5-year statute of limitations, 18 U. S. C. § 3282 , because he had spent the last six years of the charged conspiracies in prison for a felony conviction. The court denied his motion, and Smith renewed his statute-of-limitations defense at trial. In the final jury charge, the court instructed the jury to convict Smith of each conspiracy count if the Government had proved beyond a reasonable doubt that the conspiracies existed, that Smith was a member of those conspiracies, and that the conspiracies “continued in existence within five years” before the indictment. App. 289a, 300a.
After it began deliberations, the jury asked the court what to do in the event that a defendant withdrew from the conspiracies outside the relevant limitations period.[2] Smith
1 On appeal, the D. C. Circuit remanded two of the murder counts for the District Court to conduct an evidentiary hearing regarding whether Smith received ineffective assistance of counsel as to those convictions. United States v. Moore, 651 F. 3d 30 , 89 (2011) (per curiam).
2 The note to the judge inquired: “ ‘If we find that the Narcotics or RICO conspiracies continued after the relevant date under the statute of limitations, but that a particular defendant left the conspiracy before the rele *109 vant date under the statute of limitations, must we find that defendant not guilty?’ ” App. 174a.
II
As relevant here, the Court of Appeals affirmed Smith’s conspiracy convictions. Recognizing that the Circuits are divided on which party bears the burden of proving or disproving a defense of withdrawal prior to the limitations period, the court concluded that the defendant bears the burden of proof and that such a disposition does not violate the Due Process Clause. United States v. Moore, 651 F. 3d 30 , 89-90 (CADC 2011) (per curiam). We granted certiorari. 567 U. S. 916 (2012).
Petitioner’s claim lies at the intersection of a withdrawal defense and a statute-of-limitations defense. He asserts that once he presented evidence that he ended his membership in the conspiracy prior to the statute-of-limitations period, it became the Government’s burden to prove that his individual participation in the conspiracy persisted within the applicable 5-year window. This position draws support
Allocating to a defendant the burden of proving withdrawal does not violate the Due Process Clause. While the Government must prove beyond a reasonable doubt “every fact necessary to constitute the crime with which [the defendant] is charged,” In re Winship, 397 U. S. 358 , 364 (1970), “[p]roof of the nonexistence of all affirmative defenses has never been constitutionally required,” Patterson v. New York, 432 U. S. 197 , 210 (1977). The State is foreclosed from shifting the burden of proof to the defendant only “when an affirmative defense does negate an element of the crime.” Martin v. Ohio, 480 U. S. 228 , 237 (1987) (Powell, J., dissenting). Where instead it “excuse[s] conduct that would otherwise be punishable,” but “does not controvert any of the elements of the offense itself,” the Government has no constitutional duty to overcome the defense beyond a reasonable doubt. Dixon v. United States, 548 U. S. 1 , 6 (2006).
Withdrawal does not negate an element of the conspiracy crimes charged here. The essence of conspiracy is “the combination of minds in an unlawful purpose.” United States v. Hirsch, 100 U. S. 33 , 34 (1879). To convict a defendant of narcotics or RICO conspiracy, the Government must prove beyond a reasonable doubt that two or more people agreed to commit a crime covered by the specific conspiracy statute (that a conspiracy existed) and that the defendant knowingly and willfully participated in the agreement (that he was a member of the conspiracy).[3] Far from contradicting an ele
3 Narcotics conspiracy under 21 U. S. C. § 846 criminalizes .“conspir[ing] to commit any offense” under the Controlled Substances Act, including the knowing distribution of, or possession with intent to' distribute, controlled substances, § 841(a)(1). Section 1962(d) of Title 18 makes it unlawful to “conspire to violate” RICO, which makes it unlawful, among other things, *111 “for any person employed by or associated with any enterprise engaged in, or the activities of which affect, interstate or foreign commerce, to conduct or participate, directly or indirectly, in the conduct of such enterprise’s affairs through a pattern of racketeering activity,” § 1962(c).
Withdrawal also starts the clock running on the time within which the defendant may be prosecuted, and provides a complete defense when the withdrawal occurs beyond the applicable statute-of-limitations period.[4] A complete defense, however, is not necessarily one that establishes the defendant’s innocence. For example, we have held that although self-defense may entirely excuse or justify aggravated murder, “the elements of aggravated murder and self-defense [do not] overlap in the sense that evidence to prove the latter will often tend to negate the former.” Martin, supra, at 234; see Leland v. Oregon, 343 U. S. 790 , 794-796 (1952) (same for insanity defense). Likewise, although the statute of limitations may inhibit prosecution, it does not
4 The conspiracy statutes at issue here do not contain their own limitations periods, but are governed by § 3282(a), which provides: “Except as otherwise expressly provided by law, no person shall be prosecuted, tried, or punished for any offense, not capital, unless the indictment is found or the information is instituted within five years next after such offense shall have been committed.” At the time petitioner was indicted, §3282 contained no subsections; what was the full text of the section is now subsection (a).
Ill
Of course, Congress may choose to assign the Government the burden of proving the nonexistence of withdrawal, even if that is not constitutionally required. It did not do so here. “[T]he common-law rule was that affirmative defenses . . . were matters for the defendant to prove.” Martin, supra, at 235 ; see 4 W. Blackstone, Commentaries on the Laws of England 201 (1769). Because Congress did not address in 21 U. S. C. § 846 or 18 U. S. C. § 1962 (d) the burden of proof for withdrawal, we presume that Congress intended to preserve the common-law rule. Dixon, 548 U. S., at 13-14 .
That Congress left the traditional burden of proof undisturbed is both practical and fair. ‘“[W]here the facts with regard to an issue lie peculiarly in the knowledge of a party,”’ that party is best situated to bear the burden of proof. Id., at 9 . On the matter of withdrawal, the informational asymmetry heavily favors the defendant. Passive nonparticipation in the continuing scheme is not enough to
Here again, the analysis does not change when withdrawal is the basis for a statute-of-limitations defense. To be sure, we have held that the Government must prove the time of the conspiracy offense if a statute-of-limitations defense is raised. Grunewald v. United States, 353 U. S. 391 , 396 (1957). But the Government satisfied that burden here when it proved that the conspiracy continued past the statute-of-limitations period. For the offense in these conspiracy prosecutions was not the initial act of agreement, but the banding together against the law effected by that act, which continues until termination of the conspiracy or, as to a particular defendant, until that defendant’s withdrawal. And as we have discussed, the burden of establishing that withdrawal rests upon the defendant.
5 Here, Smith introduced a stipulation of his dates spent incarcerated, as well as “testimonial evidence showing that he was no longer a member of the charged conspiracies during his incarceration.” Brief for Petitioner 3. The jury found that this did not establish by a preponderance of the evidence an affirmative act of withdrawal.
* * *
Having joined forces to achieve collectively more evil than he could accomplish alone, Smith tied his fate to that of the group. His individual change of heart (assuming it occurred) could not put the conspiracy genie back in the bottle. We punish him for the havoc wreaked by the unlawful scheme, whether or not he remained actively involved. It is his withdrawal that must be active, and it was his burden to show that.
The judgment of the Court of Appeals is affirmed.
It is so ordered.
Cases cited
- 651 F. 3d 30 651 F. 3d 30 p. 109
- Burnett v. Campbell 567 U. S. 916 p. 109
- In re Winship 397 U. S. 358 p. 110
- Patterson v. New York 432 U. S. 197 p. 110
- Martin v. Ohio 480 U. S. 228 p. 110, p. 111, p. 112
- Dixon v. United States 548 U. S. 1 at 13-14, at 9 p. 110, p. 112
- United States v. Hirsch 100 U. S. 33 p. 110
- United States v. Kissel 218 U. S. 601 p. 111
- Hyde v. United States 225 U. S. 347 at 369-370 p. 111, p. 113, p. 114
- Pinkerton v. United States 328 U. S. 640 p. 111
- Leland v. Oregon 343 U. S. 790 p. 111
- United States v. Cook 17 Wall. 168 at 179-180 p. 112
- Biddinger v. Commissioner of Police 245 U. S. 128 p. 112
- Toussie v. United States 397 U. S. 112 p. 112
- Grunewald v. United States 353 U. S. 391 p. 113