25 U.S.C. § 180 : US Code - Section 180: Settling on or surveying lands belonging to Indians by treaty

Search 25 U.S.C. § 180 : US Code - Section 180: Settling on or surveying lands belonging to Indians by treaty

Every person who makes a settlement on any lands belonging,
secured, or granted by treaty with the United States to any Indian
tribe, or surveys or attempts to survey such lands, or to designate
any of the boundaries by marking trees, or otherwise, is liable to
a penalty of $1,000. The President may, moreover, take such
measures and employ such military force as he may judge necessary
to remove any such person from the lands.