The Insurrection Act of 1807 is a U.S. federal law that allows the president to deploy military forces to suppress insurrections or enforce federal laws within the United States. It provides the president with the authority to act when local authorities are unable to maintain order or enforce the law.

The act or an instance of open revolt against civil authority or a constituted government.

A rising against civil or political authority, or the established government; open and active opposition to the execution of law in a city or state.

An insurrection is an act of revolt against civil authority or an established government, often involving armed conflict. It typically signifies a serious uprising or rebellion against the ruling power.