A Test of Limits: Posse Comitatus and the National Guard
A federal court ruled that federalized National Guard troops cannot perform law enforcement functions under the Posse Comitatus Act when placed into federal service.
The 150-year-old law that governs military's role in local law enforcement
The Posse Comitatus Act bars U.S. military from enforcing domestic law, with exceptions including the Insurrection Act, federalized National Guard and Coast Guard.
