Murder (United States law)
In the United States the dual sovereignty doctrine applies to murder as well as to other crimes. In cases where a murder involves both state and federal jurisdiction, the accused can be tried and punished separately by each jurisdiction. Under the dual sovereignty doctrine this is not considered double jeopardy. If another federal law was violated in connection with a murder, then the murder can be prosecuted by a federal court. This is called "piggyback jurisdiction". In the United States there is no statute of limitations on the crime of murder. But most other federal laws have a five-year statute of limitations. An exception is for cases of terrorism where the statute of limitations is eight years. Or if explosives or arson were involved, the statute of limitations is ten years.