Nothing in sections
117a to
117c of this title shall affect the requirements of the Act of October 19, 1973 (
87 Stat. 466), as amended [
25 U.S.C.
1401 et seq.], or of any plan approved thereunder, with respect to the use or distribution of funds subject to that Act: Provided, That per capita payments made pursuant to a plan approved under that Act may be made by an Indian tribe as provided in section
117a of this title if all other provisions of the 1973 Act are met, including but not limited to, the protection of the interests of minors and incompetents in such funds.