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State Criminal Laws

2 October, 2015 - 09:12

The power to enact criminal laws belongs almost exclusively to the states. This is because of the Tenth Amendment, which vests in states a police power to provide for the health, safety, and welfare of state citizens. Approximately 90 percent of all criminal laws are state, rather than federal. Often, federal crimes are also state crimes and can be prosecuted and punished by both the state and federal government without violating the principle of double jeopardy.