25 U.S.C. § 229: Injuries to property by Indians

If any Indian, belonging to any tribe in amity with the United States, shall, within the Indian country, take or destroy the property of any person lawfully within such country, or shall pass from Indian country into any State or Territory inhabited by citizens of the United States, and there take, steal, or destroy, any horse, or other property belonging to any citizen or inhabitant of the United States, such citizen or inhabitant, his representative, attorney, or agent, may make application to the proper superintendent, agent, or subagent, who, upon being furnished with the necessary documents and proofs, shall, under the direction of the President, make application to the nation or tribe to which such Indian shall belong, for satisfaction; and if such nation or tribe shall neglect or refuse to make satisfaction, in a reasonable time not exceeding twelve months, such superintendent, agent, or subagent shall make return of his doings to the Commissioner of Indian Affairs, that such further steps may be taken as shall be proper, in the opinion of the President, to obtain satisfaction for the injury.