What does the Posse Comitatus Act state?

The Posse Comitatus Act is a U.S. federal law that restricts the ability of the federal government to use the military to enforce domestic policies or laws. Specifically, it states that the military cannot be used to enforce civilian law, ensuring a clear distinction between military and civilian authorities. This principle supports the notion of civilian control over the military, promoting a system where the military is not involved in everyday law enforcement.

The act was enacted in 1878 and has been reinforced through various legal interpretations over the years. Its intent is to prevent military involvement in civilian affairs, thus safeguarding civil liberties and upholding the rule of law in a democratic society. This division is essential in maintaining the integrity of both the military and civilian law enforcement agencies, ensuring that civilian matters are handled by civilian authorities.