Dual sovereignty doctrine
Encyclopedia
Dual sovereignty is a legal doctrine
Legal doctrine
A legal doctrine is a framework, set of rules, procedural steps, or test, often established through precedent in the common law, through which judgments can be determined in a given legal case. A doctrine comes about when a judge makes a ruling where a process is outlined and applied, and allows...

 holding that more than one sovereign
Sovereign state
A sovereign state, or simply, state, is a state with a defined territory on which it exercises internal and external sovereignty, a permanent population, a government, and the capacity to enter into relations with other sovereign states. It is also normally understood to be a state which is neither...

 (e.g. a state government and the Federal government) may prosecute an individual without violating the prohibition against double jeopardy
Double jeopardy
Double jeopardy is a procedural defense that forbids a defendant from being tried again on the same, or similar charges following a legitimate acquittal or conviction...

if the individual's act breaks the laws of each sovereignty.
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