Using Federal Troops Within the United Stateshttp://www.thomasbrewton.com/index.php/weblog/using_federal_troops_within_the_united_states/
A little known survival of British common law is the source of authority for Presidents’ deploying military troops to maintain domestic law and order.
Posse Comitatus in America
By Melanie K. Wooten
The phrase “posse comitatus” is Latin and translates as