"
Only asking because we're talking about the who has authority to deploy National Guard divisions generally, the D.C.N.G. specifically --not the *federal* military.
But please, do continue; demonstrate how state governors, the POTUS are obligated to get permission from Congress before deploying their respective N.G. forces. Before you try, though, maybe actually read the Act. LOL"
The Posse Comitatus Act (1878) generally prohibits the use of the U.S. Army (and later the Air Force, and by policy the Navy and Marine Corps) for domestic law enforcement against U.S. civilians. It is the main legal barrier to using federal military forces as a police force inside the United States. There are limited exceptions (e.g., certain emergencies, National Guard under state control, or specific congressional authorizations).
Yeah, you might want to brush up on law.