pursuant to Public Laws 99–264, 100–580, 101–618, 111–11, 111–291, and 114–322, and for implementation of other land and water rights settlements, $50,057,000, to remain available until expended. Indian guaranteed loan program account For the cost of guaranteed loans and insured loans, $19,279,000, to remain available until September 30, 2020, of which $1,702,000 is for administrative expenses, as authorized by the Indian Financing Act of 1974: Provided , That such costs, including the cost of modifying such loans, shall be as defined in section 502 of the Congressional Budget Act of 1974: Provided further , That these funds are available to subsidize total loan principal, any part of which is to be guaranteed or insured, not to exceed $329,260,000. Administrative provisions (including rescission of funds) The Bureau of Indian Affairs may carry out the operation of Indian programs by direct expenditure, contracts, cooperative agreements, compacts, and grants, either directly or in cooperation with States and other organizations. Notwithstanding Public Law 87–279 ( 25 U.S.C. 15 ), the Bureau of Indian Affairs may contract for services in support of the management, operation, and maintenance of the Power Division of the San Carlos Irrigation Project. Notwithstanding any other provision of law, no funds available to the Bureau of Indian Affairs for central office oversight and Executive Direction and Administrative Services (except executive direction and administrative services funding for Tribal Priority Allocations, regional offices, and facilities operations and maintenance) shall be available for contracts, grants, compacts, or cooperative agreements with the Bureau of Indian Affairs under the provisions of the Indian Self-Determination Act or the Tribal Self-Governance Act of 1994 ( Public Law 103–413 ). In the event any tribe returns appropriations made available by this Act to the Bureau of Indian Affairs, this action shall not diminish the Federal Government’s trust responsibility to that tribe, or the