Puerto Rico v. Sanchez Valle
The Supreme Court ruled that Puerto Rico and the federal government cannot both prosecute someone for the same crime, because Puerto Rico's power to bring criminal charges ultimately traces back to Congress rather than to some independent source.
The decision means Puerto Rico is treated differently from a U.S. state for double-jeopardy purposes, even though Puerto Rico governs its own local affairs much like a state does.
How it got here: Trial courts dismissed the Commonwealth charges; an appeals court reversed; the Puerto Rico Supreme Court sided with the defendants, and Puerto Rico asked the U.S. Supreme Court to review that ruling.
The Case in Depth
What happened
Two men separately sold guns to an undercover police officer in Puerto Rico. Commonwealth prosecutors charged them under Puerto Rico's gun law, and federal prosecutors later charged them under similar federal gun-trafficking laws for the same sales. Both men pleaded guilty to the federal charges, then tried to get the Puerto Rico charges dismissed, arguing that being prosecuted twice for the same conduct violated the ban on double jeopardy.
The question before the Court
Could both Puerto Rico and the federal government prosecute the same person for selling the same illegal guns, without violating the ban on double jeopardy?
The Court's answer
No — the Court ruled that Puerto Rico and the federal government count as the same sovereign for double-jeopardy purposes, so they cannot bring back-to-back prosecutions for the same conduct. The test for whether two governments are separate sovereigns doesn't ask how much self-rule an entity has; it asks where that government's power to punish crimes ultimately came from in the first place.
Tracing Puerto Rico's authority all the way back, the Court found that Congress created the process that led to Puerto Rico's constitution and approved that constitution before it took effect. Because Congress is the ultimate source of Puerto Rico's power to prosecute — just as it is for the federal government's own prosecutors — the two governments draw their authority from the same well and cannot prosecute the same person twice for the same crime.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
People charged with crimes in Puerto Rico who have already faced federal charges for the same conduct cannot be tried again by Commonwealth prosecutors. The ruling also clarifies, for future cases, that Puerto Rico's substantial self-governance does not by itself make it a separate sovereign from the United States.
What changes now
This is a final merits decision, not a temporary order. The judgment of the Puerto Rico Supreme Court is affirmed, meaning the Commonwealth charges against the two men remain dismissed. The ruling also settles, for future cases, that Puerto Rico cannot bring its own prosecution after a federal one (or vice versa) for the same conduct, though Justice Ginsburg's concurrence suggests the broader dual-sovereignty doctrine itself may deserve further review in a future case.
What this does not decide
The Court did not decide whether the Double Jeopardy Clause applies to Puerto Rico at all — both sides agreed it did, so the Court didn't examine that question. The ruling is also specific to Puerto Rico's unique history and does not address how the dual-sovereignty test applies to other U.S. territories.
Concurrences and dissents
Concurrence — Justice Ginsburg
Justice Ginsburg joined the majority in full but wrote separately to question the broader 'separate sovereigns' doctrine itself, arguing it poorly serves the purpose of protecting people from being harassed by repeated prosecutions for the same conduct. She suggested that a future case should reconsider whether any part of the United States should be able to prosecute someone again after another part already has.
Concurrence in part — Justice Thomas
Justice Thomas agreed with the Court's holding regarding Puerto Rico and territories generally, but he declined to join the portions of the opinion discussing how the doctrine applies to Indian tribes, citing his own unresolved doubts about the Court's Indian law precedents.
Dissent — Justice Breyer
Justice Breyer argued that Puerto Rico's history—including Public Law 600, the drafting and ratification of its constitution, and decades of recognition by all three federal branches as autonomous—shows that Puerto Rico itself, not Congress, became the true source of its own criminal law after 1952. He would have held that Puerto Rico and the federal government are separate sovereigns, comparing Puerto Rico's situation favorably to that of Indian tribes and newly admitted states.
How the Court got there
The legal reasoning, step by step
- The Court applied the dual-sovereignty doctrine, which allows two governments to prosecute the same conduct only if they are truly separate sovereigns; the key test asks not how much self-rule an entity has, but the 'ultimate source' of its power to prosecute — tracing authority back to its deepest historical root rather than looking at how the power is used today.
- Under this approach, states count as separate sovereigns because their power to make and enforce criminal law existed before they joined the Union and was preserved by the Tenth Amendment, not granted by Congress. Indian tribes likewise count as separate sovereigns because their power to punish predates the United States itself.
- By contrast, a city is not a separate sovereign from its state, because a city's charter and criminal-law authority originally come from the state government. Similarly, early-20th-century territories, including an earlier version of Puerto Rico, were held not to be separate sovereigns from the United States because their prosecutorial power came directly from Congress.
- The Court then asked whether Puerto Rico's 1950s transformation into a self-governing Commonwealth, with its own popularly ratified constitution, changed this result. It found that while Puerto Rico gained substantial day-to-day autonomy, autonomy itself is not what the test measures.
- Tracing Puerto Rico's prosecutorial power back further, the Court found that Congress passed the law authorizing Puerto Rico's constitutional convention, and Congress also had to approve the resulting constitution before it took effect. Because Congress created the process that ultimately produced Puerto Rico's power to prosecute crimes, Congress remains the deepest source of that power.
- Since Puerto Rico's power to prosecute and the federal government's power to prosecute both trace back to Congress, the two governments draw their authority from the same ultimate source and are not separate sovereigns for double-jeopardy purposes.
Doctrinal impact
Cases affected by this decision
Distinguishes Grafton v. United States (206 U. S. 333)
The Court found this early territorial case not fully controlling given Puerto Rico's later constitutional transformation, though it reached the same result.
Distinguishes Puerto Rico v. Shell Co. (302 U. S. 253)
The Court said this case alone does not control given Puerto Rico's post-1952 constitutional changes, though the ultimate conclusion was unchanged.