The Dual-Sovereignty Exception to Double Jeopardy

What the Dual-Sovereignty Doctrine Means for a Federal Case

The Double Jeopardy Clause bars a second prosecution for the “same offence.” Under the dual-sovereignty doctrine, offenses defined by separate sovereigns are never the same offense, no matter how identical the underlying conduct. A completed Texas case therefore does not, by itself, stop a federal indictment built on the same facts.

The logic treats the source of the law, not the conduct, as what defines an offense. An offense is the transgression of a law; each law is the command of a sovereign; so one act that breaks the laws of two sovereigns commits two offenses. In Heath v. Alabama, the Supreme Court described the crucial determination: whether the two entities that seek to prosecute draw their authority to punish from distinct sources of power. The States hold prosecutorial power that predates the Union and is preserved by the Tenth Amendment; the federal government holds its own. Both directions are settled. Abbate v. United States permits a federal prosecution after a state conviction for the same acts, and Bartkus v. Illinois permits a state prosecution after a federal acquittal.

For defendants in the Northern and Eastern Districts of Texas, the pattern is familiar: a state drug, gun, or fraud case resolves by plea or dismissal, and a federal indictment follows on the same conduct — often with steeper exposure. The parent motion page covers the general double jeopardy framework that applies within a single sovereign. This satellite maps the exception itself: why it survives, who counts as a separate sovereign, and the two practical limits — the sham-prosecution exception and the Justice Department’s own charging policy — that give the defense something real to work with.

Gamble v. United States: Why the Doctrine Survived

In 2019 the Supreme Court took up a direct challenge to the dual-sovereignty doctrine and kept it. Gamble v. United States holds that the doctrine is not an exception to the double jeopardy right at all — it follows from the text of the Fifth Amendment itself.

Terance Gamble was convicted under Alabama law of possessing a firearm as a felon; the United States then charged the same possession under 18 U.S.C. sec. 922(g)(1). He asked the Court to overrule the separate-sovereigns cases as inconsistent with the Clause’s original meaning. The Court declined. As originally understood, an “offence” is defined by a law, and each law is defined by a sovereign; where there are two sovereigns, there are two laws and two offenses. The Court also rejected the argument that incorporating the Double Jeopardy Clause against the States dissolved the doctrine’s foundation: the rule rests on what counts as the same offense, and that is equally true after incorporation. Finally, stare decisis did heavy work — the challenger needed more than ambiguous historical evidence to overturn a line of decisions spanning 170 years.

The practical consequence for motion practice is blunt. A district court in the Fifth Circuit cannot dismiss an indictment on a theory Gamble rejected, so a dual-jeopardy motion cannot be built on asking the trial judge to disagree with the Supreme Court. Counsel can preserve a good-faith argument for changing the law on appellate review, but the motion itself must find footing inside the doctrine’s own boundaries: a showing that the two prosecutions actually share one sovereign, the narrow sham exception, or policy advocacy aimed at the charging decision before it is final.

Who Counts as a Separate Sovereign? The Ultimate-Source Test

Sovereignty for double jeopardy purposes is historical, not functional. Puerto Rico v. Sanchez Valle frames the single question: do the two prosecuting entities draw their power to punish from independent origins, or from the same ultimate source? Day-to-day autonomy in prosecution counts for nothing.

Applying that backward-looking test, the Court held that Puerto Rico and the United States are the same sovereign, because the ultimate source of the Commonwealth’s prosecutorial power is Congress. The table sorts the recurring pairings.

Denezpi v. United States added a modern wrinkle: the doctrine turns on which sovereign defined the offense, not which government prosecuted it. Federal officials prosecuted a tribal-ordinance violation in a Court of Indian Offenses, and a federal statutory charge for the same act followed; the Court permitted it because the ordinance was a tribal offense, whoever tried it. The flip side is where defense traction lives: when the two cases trace to the same ultimate source, the exception disappears and the ordinary protections — same-elements analysis and issue preclusion, covered on the companion pages — apply in full.

The Bartkus Sham-Prosecution Exception

Bartkus v. Illinois upheld a state conviction obtained after a federal acquittal for the same bank robbery, but it left a door ajar. The Court examined whether the state case was “a sham and a cover” for a second federal prosecution — one sovereign acting merely as a tool of the other — and found on that record it was not.

What does not qualify is well settled, because Bartkus itself said it: cooperation between federal and state officers is the conventional practice. Shared investigative files, joint task forces, federal agents testifying in the state case, parallel investigations, and coordinated charging timelines are all routine and lawful. The exception, where courts recognize it, requires something categorically different — proof that the second prosecuting sovereign exercised no independent judgment, and that the first sovereign solicited, staffed, funded, and directed the second case to evade its own constitutional bar.

Building that record is discovery work. Counsel looks for communications between the two prosecution teams about why the second case was brought, evidence of who actually presented the case and made the charging decisions, funding or personnel arrangements that put one sovereign’s lawyers in control of the other’s case, and timing — an indictment returned immediately after an acquittal, on the first sovereign’s initiative, is the classic red flag. Honesty about the odds matters: courts describe the exception as extremely narrow, and defendants rarely satisfy it. But it is the recognized safety valve inside the doctrine, and it is forfeited in practice unless the factual record is actually made in the district court rather than asserted in a conclusory paragraph.

The DOJ Petite Policy: The Practical Backstop

The Justice Department’s own charging policy does more day-to-day work than the constitutional exception. Justice Manual 9-2.031 — the Petite policy, named for the case that prompted it — presumptively bars a federal prosecution based on substantially the same acts already prosecuted by another sovereign unless specific conditions are met.

Under the policy, a successive federal prosecution requires a substantial federal interest, a showing that the prior prosecution left that interest demonstrably unvindicated, and advance approval from the appropriate Assistant Attorney General. A prior conviction with a sentence that adequately reflects the federal interest will usually end the inquiry; an acquittal does not automatically reopen it, because the policy asks whether the earlier proceeding was a genuine test of the case rather than whether the government liked the result.

The policy confers no enforceable rights — the Justice Manual says so expressly, and courts do not dismiss indictments because a prosecutor skipped the approval step. Its value is advocacy. Before an indictment is returned, defense counsel can present the completed state punishment to the United States Attorney’s Office, document how the state case vindicated every interest the federal charge would serve, and ask for declination under the policy’s own terms. After indictment, the same facts still frame plea negotiations and sentencing arguments about punishment already imposed for the same conduct. In a dual-sovereignty posture, the Petite letter is often the highest-percentage move available — it aims at the charging decision, which is discretionary, rather than at a constitutional doctrine the Supreme Court just reaffirmed.

Raising a Dual-Sovereignty Challenge Under Rule 12(b)

A former-prosecution challenge is raised by a pretrial motion to dismiss under Rule 12(b). In a dual-sovereignty posture the motion has three possible footholds: the two prosecutions actually share one sovereign, the sham exception applies, or a same-sovereign problem is hiding inside the case.

The workflow starts with the complete record of the first prosecution — charging instrument, plea papers, judgment, and docket — and then identifies the offense-defining sovereign for each case, the question Denezpi makes decisive. Counsel runs the ultimate-source test on that pairing. If the two cases trace to one sovereign, the motion pivots to the full protections: the same-elements comparison and the issue-preclusion analysis addressed on the companion pages. If the sovereigns are genuinely separate, the motion is candid about Gamble and builds the sham-exception record instead, while the Petite request runs on a parallel track with the prosecutors. Counsel also weighs how the completed state sentence will interact with any federal sentence, because that arithmetic often matters more to the client’s outcome than the constitutional label.

The federal criminal defense attorneys at L and L Law Group, PLLC in Frisco, Texas, Co-Founding Partners Reggie London and Njeri London, litigate double jeopardy and former-prosecution motions in the Northern and Eastern Districts of Texas. To discuss a federal case that follows a state one, call (972) 370-5060 or email info@landllawgroup.com. This overview is general legal information, not legal advice, and it does not create an attorney-client relationship.

Where This Fits

This guide is one of four situations that arise under the Motion to Dismiss on Double Jeopardy / Collateral Estoppel. Start with the parent motion for the overall framework, or move to a related fact pattern:

What the Case Law Says

These decisions—verified against primary sources—control how this issue is litigated. Every case still turns on its own facts.

• Gamble v. United States, 587 U.S. 678 (2019) — The Court retained the dual-sovereignty doctrine: an offense is defined by a sovereign's law, so two sovereigns' laws create two offenses.
• Heath v. Alabama, 474 U.S. 82 (1985) — Two States are separate sovereigns; successive prosecutions by two States for the same conduct are not barred by the Double Jeopardy Clause.
• Abbate v. United States, 359 U.S. 187 (1959) — A federal prosecution after a state conviction for the same acts does not put the defendant twice in jeopardy under the Fifth Amendment.
• Bartkus v. Illinois, 359 U.S. 121 (1959) — A state prosecution after a federal acquittal stands unless the state case is merely a sham and cover for a second federal prosecution.
• Puerto Rico v. Sanchez Valle, 579 U.S. 59 (2016) — Puerto Rico and the United States are not separate sovereigns because the ultimate source of the Commonwealth's prosecutorial power is Congress.
• Denezpi v. United States, 596 U.S. 591 (2022) — Successive prosecutions of distinct offenses defined by separate sovereigns do not violate double jeopardy even when a single sovereign prosecutes both.

General summaries of published opinions for information only — not predictions about any specific case.