Provided further , That funds provided as a gift that are used for purposes of this paragraph shall be subject to prior consultation with, and the regular notification procedures of, the Committees on Appropriations: Provided further , That such costs, including the cost of modifying such direct and guaranteed loans, shall be as defined in section 502 of the Congressional Budget Act of 1974, as amended: Provided further , That funds made available by this paragraph may be used for the cost of modifying any such guaranteed loans under this Act or prior Acts making appropriations for the Department of State, foreign operations, and related programs, and funds used for such cost, including if the cost results in a negative subsidy, shall be subject to the regular notification procedures of the Committees on Appropriations: Provided further , That the provisions of section 107A(d) (relating to general provisions applicable to the Development Credit Authority) of the Foreign Assistance Act of 1961, as contained in section 306 of H.R. 1486 as reported by the House Committee on International Relations on May 9, 1997, shall be applicable to direct loans and loan guarantees provided under this heading, except that the principal amount of loans made or guaranteed under this heading with respect to any single country shall not exceed $300,000,000: Provided further , That these funds are available to subsidize total loan principal, any portion of which is to be guaranteed, of up to $2,000,000,000. In addition, for administrative expenses to carry out credit programs administered by USAID, $10,000,000, which may be transferred to, and merged with, funds made available under the heading Operating Expenses in title II of this Act: Provided , That funds made available under this heading shall remain available until September 30, 2020. Economic support fund For necessary expenses to carry out the provisions of chapter 4 of part II of the Foreign Assistance Act of 1961, $3,959,696,000, to remain available until September 30,