25 U.S. Code § 128 - Appropriations not paid to Indians at war with United States
None of the appropriations made for the Indian Service shall be paid to any band of Indians or any portion of any band while at war with the United States or with the white citizens of any of the States or Territories.
For transfer of functions of other officers, employees, and agencies of Department of the Interior, with certain exceptions, to Secretary of the Interior, with power to delegate, see Reorg. Plan No. 3 of 1950, §§ 1, 2, eff. May 24, 1950, 15 F.R. 3174,64 Stat. 1262, set out in the Appendix to Title 5, Government Organization and Employees.