16 U.S.C. § 23 : US Code - Section 23: Detail of troops for protection of park

Search 16 U.S.C. § 23 : US Code - Section 23: Detail of troops for protection of park

The Secretary of the Army, upon the request of the Secretary of
the Interior, is authorized and directed to make the necessary
details of troops to prevent trespassers or intruders from entering
the park for the purpose of destroying the game or objects of
curiosity therein, or for any other purpose prohibited by law, and
to remove such persons from the park if found therein.