Military Patrolling Grand Central Station in NYC (VIDEO)

Posse Comitatus Act forbids the use of the US Army, and the US Air Force for law enforcement purposes. (VIDEO)





　

What is the US Posse Comitatus Act?  (VIDEO)

In the United States, a federal statute known as the Posse Comitatus Act forbids the use of the United States Army, and through it, its offspring, the United States Air Force as a posse comitatus or for law enforcement purposes.

A directive from the Secretary of Defense prohibits the use of the United States Navy and United States Marine Corps for law enforcement.

The limitation does not apply to the National Guard when activated by a state's governor for an emergency like a hurricane.