25 U.S. Code § 129 - Moneys due Indians holding captives other than Indians withheld
The Secretary of the Interior is authorized to withhold, from any tribe of Indians who may hold any captives other than Indians, any moneys due them from the United States until said captives shall be surrendered to the lawful authorities of the United States.
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.