Denezpi v. United States
The Supreme Court ruled that prosecuting a Native American man twice — first under a tribal code and then under a federal statute — for the same underlying act did not violate the constitutional protection against double jeopardy, because the two laws were defined by different sovereigns and therefore count as different offenses.
The decision clarifies that the Double Jeopardy Clause asks what offense a person faces, not who is doing the prosecuting — meaning a single sovereign can bring successive prosecutions under two different sovereigns' laws without triggering the constitutional bar.
How it got here: Denezpi's motion to dismiss on double jeopardy grounds was denied by the federal district court; he was convicted and sentenced to 360 months; the Tenth Circuit affirmed; the Supreme Court granted certiorari.
The Case in Depth
What happened
Merle Denezpi, a member of the Navajo Nation, traveled to the Ute Mountain Ute Reservation in Colorado, where he barricaded a woman in a room, threatened her, and forced her to have sex with him. He was first charged in a federal administrative court (called a CFR court) that handles crimes on the Ute reservation and pleaded guilty to assault and battery under the tribe's code, serving 140 days. Six months later, the federal government indicted him for aggravated sexual abuse under the federal Major Crimes Act — a charge that ultimately resulted in a 30-year prison sentence.
The question before the Court
Can the federal government prosecute a person a second time under a federal law after he was already convicted under a tribal ordinance for the same act — or does the Constitution's protection against double jeopardy block that?
The Court's answer
No — the Double Jeopardy Clause did not bar the second prosecution. The Clause forbids being prosecuted twice for "the same offence," and the Court held that an offense is defined by the sovereign that enacted the law prohibiting it. Because the Ute Mountain Ute Tribe and the United States are separate sovereigns, the tribal assault-and-battery ordinance and the federal aggravated sexual abuse statute define two distinct offenses — even though both arose from the same act.
Denezpi argued that the dual-sovereignty doctrine (the rule that offenses defined by different sovereigns are different offenses) should apply only when two different sovereigns actually prosecute the defendant. The Court rejected that framing: the Clause does not prohibit successive prosecutions by the same sovereign; it prohibits successive prosecutions for the same offense. Even if the United States ran both prosecutions, the offenses were defined by different sovereigns and therefore remained legally distinct.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Native Americans who commit acts on reservation land that violate both a tribal ordinance and a federal criminal statute can be prosecuted for each, one after the other, even if federal authorities handle both cases. A conviction under tribal law — which often carries a short sentence — will not shield someone from a later, potentially much lengthier federal prosecution for overlapping conduct.
What changes now
The Tenth Circuit's ruling is affirmed and Denezpi's 30-year federal sentence stands. The Court explicitly left open whether some other constitutional provision — such as due process — might limit a single sovereign's ability to prosecute successive cases using both its own laws and another sovereign's laws. The question of whether CFR court prosecutors exercise federal or tribal authority was also left unresolved, as the Court found it unnecessary to decide that issue given its holding.
What this does not decide
The ruling does not decide whether due process or any other constitutional guarantee limits one sovereign's ability to prosecute under another sovereign's laws. It also does not resolve whether CFR court prosecutors exercise federal or tribal authority — that question was expressly left open. The dissent flags both issues as live for future cases.
Concurrences and dissents
Dissent — Justice Gorsuch
Justice Gorsuch argued that both of Denezpi's convictions were for federal offenses, because the CFR court is a creature of the Department of the Interior that enforces federal regulations assimilating tribal ordinances into federal law — meaning the same sovereign prosecuted him twice. He also argued that the dual-sovereignty doctrine requires two prosecuting entities to draw their authority from wholly independent sovereign sources, a condition not met here since the CFR court's authority flows entirely from the federal executive. Sotomayor and Kagan joined Parts I and III of the dissent but not Part II, which questioned the statutory and constitutional legitimacy of the CFR court itself.
How the Court got there
The legal reasoning, step by step
- The Double Jeopardy Clause forbids being prosecuted twice 'for the same offence.' The Court emphasized that 'offence,' as understood in 1791, meant the violation of a specific law — not the same conduct or actions more broadly. The Clause therefore focuses on what offense someone is prosecuted for, not who does the prosecuting.
- The dual-sovereignty doctrine flows directly from that text. Because each sovereign defines its own laws, an offense enacted by one sovereign is necessarily a different offense from one enacted by another, even if both arise from the same act. This principle applies to Indian tribes, which retain inherent sovereign authority — authority that predates European arrival and was never taken away — to define and punish violations of their own laws.
- Denezpi's single act violated two separately enacted laws: the Ute Mountain Ute Tribe's assault-and-battery ordinance and the United States' Major Crimes Act prohibition on aggravated sexual abuse in Indian country. Under the dual-sovereignty doctrine, two laws made by two different sovereigns define two separate offenses, and the Court's 1978 precedent in United States v. Wheeler — which upheld a successive tribal-then-federal prosecution involving the Navajo Nation — controlled the outcome.
- Denezpi argued the doctrine should require not just separate enactment but also separate enforcement — meaning it should only apply when different sovereigns each prosecute their own law. The Court rejected this, finding no historical evidence that 'offence' in 1791 was understood to include the identity of the prosecutor. The Clause asks what a person is put in jeopardy for, not who does the prosecuting.
- Accepting Denezpi's position would produce an incoherent result: a single act creates two separate offenses at the moment it is committed (because two sovereigns' laws are broken), but those offenses somehow merge into one if a single sovereign later prosecutes both. The Court found no textual basis for that outcome and concluded that enactment — not enforcement — is what determines whether two offenses are legally distinct under the Double Jeopardy Clause.
Doctrinal impact
Cases affected by this decision
Reaffirms United States v. Wheeler (435 U. S. 313)
The Court applied Wheeler's dual-sovereignty framework, saying its reasoning 'controls' the outcome here.
Reaffirms Gamble v. United States (587 U. S. ___)
The Court relied on Gamble's text-based explanation of why the dual-sovereignty doctrine is not an exception to double jeopardy but flows from it.
Distinguishes Bartkus v. Illinois (359 U. S. 121)
Bartkus addressed a different question and never analyzed whether double jeopardy bars a single sovereign from prosecuting another sovereign's law.