1. Definition.—
A crime consists in the violation of a public law either forbidding or commanding an act to be done. One act may constitute several crimes against different jurisdictions, as against a State and the United States and a foreign country. Crimes are classified as treason, felonies and misdemeanors. Treason against the United States consists only in levying war against them, or in adhering to their enemies, giving them aid and comfort. Felonies are crimes punishable by death or imprisonment in a state prison; all other crimes are misdemeanors.
Crimes committed at sea are those accomplished upon the high seas or within the jurisdiction of the admiralty, which extends over all navigable waters. Such crimes are punishable by the United States so far as Congress legislates on the subject and otherwise by the particular sovereignty within whose jurisdiction the offense is committed.