They do have a right to protect military members and their families anywhere the command see fit. Yes, the arrest of an individual would have to be completed by whoever has jurisdiction, but the protection (to include deadly force) can be performed my an MP.
Alos, an MP can perform limited law enforcement with agreement with local jurisdiction where there is a large on or off duty military population. ie patrolling with civilian law enforcement in a bar area downtown to ensure the “good order and discipline” of the troops.
BS.
They are not on a base, they are patrolling the streets of an American city while armed and in uniform. That is not their job, it is the job of the police.
Yep.
In fact in many cases the military usually still has jurisdiction within a one to five mile radius from the post boundaries.
At Ft. Polk, the MP’s can pull you over all along the 2 1/2 miles of Entrance Road between the gate and Highway 171.