This part sets forth guidelines for the Secretary of the Interior, including any tribe or tribal organization if that entity is administering specific programs, functions, services or activities, previously administered by the Secretary of the Interior, but now authorized under a Self-Determination Act contract (pursuant to 25 U.S.C. §450f) or a Self-Governance compact (pursuant to 25 U.S.C. §558cc), to carry out the trust duties owed to tribes and individual Indians to manage and administer trust assets for the exclusive benefit of tribal and individual Indian beneficiaries pursuant to federal law, including the American Indian Trust Fund Management Reform Act of 1994, Public Law 103-412, 108 Stat. 4239, 25 U.S.C. §4001 (Trust Reform Act).