Are you pinch-hitting for Watfly on this question?
The Posse Comitatus Law of 1878 and the passage of 10 U.S. Code § 275 in 1981 forbid the use of Army, Navy, Marine Corps, and Air Force personnel to enforce civilian laws. The Coast Guard already has statutory authorization to enforce Federal Laws anywhere in the US or on International Waters, so I guess t and friends could transfer a large part of the Army to the Coast Guard just for this purpose (?).
The only southern border state with a Republican Governor is (and will be next year) Texas. Before the Texas NG troops are deployed to other states, they should first be issued new all-black uniforms with skull pins on their hats.