((a)) ** In general** Notwithstanding any other provision of law, not later than 30 days after the date of apportionment to the applicable Federal department or agency, the head of a Federal agency overseeing a program identified in a plan approved under this chapter shall transfer to the Director of the Bureau of Indian Affairs for distribution to an Indian tribe any funds identified in the approved plan of the Indian tribe.

((b)) ** Transfer of funds** Notwithstanding any other provision of law, at the request of the Indian tribe, all program funds transferred to an Indian tribe in accordance with the approved plan of the Indian tribe shall be transferred to the Indian tribe pursuant to an existing contract, compact, or funding agreement awarded pursuant to title I or IV of the Indian Self-Determination and Education Assistance Act ( et seq.).25 U.S.C. 5301