The purpose of this subchapter is to provide for the termination of Federal supervision over the trust and restricted property of the Klamath Tribe of Indians consisting of the Klamath and Modoc Tribes and the Yahooskin Band of Snake Indians, and of the individual members thereof, for the disposition of federally owned property acquired or withdrawn for the administration of the affairs of said Indians, and for a termination of Federal services furnished such Indians because of their status as Indians.