posse comitatus

18 U.S. Code § 1385 – Use of Army and Air Force as posse comitatus

Whoever, except in cases and under circumstances expressly authorized by the Constitution or Act of Congress, willfully uses any part of the Army or the Air Force as a posse comitatus or otherwise to execute the laws shall be fined under this title or imprisoned not more than two years, or both.

(Added Aug. 10, 1956, ch. 1041, §?18(a), 70A Stat. 626; amended Pub. L. 86–70, §?17(d), June 25, 1959, 73 Stat. 144; Pub. L. 103–322, title XXXIII, §?330016(1)(L), Sept. 13, 1994, 108 Stat. 2147.)