congressional committees on United Nations buildings and facilities, as described under this section in the report accompanying this Act. (g) Sexual exploitation and abuse in peacekeeping operations The Secretary of State shall, to the maximum extent practicable, withhold assistance to any unit of the security forces of a foreign country if the Secretary has credible information that such unit has engaged in sexual exploitation or abuse, including while serving in a United Nations peacekeeping operation, until the Secretary determines that the government of such country is taking effective steps to hold the responsible members of such unit accountable and to prevent future incidents: Provided, That the Secretary shall promptly notify the government of each country subject to any withholding of assistance pursuant to this paragraph, and shall notify the appropriate congressional committees of such withholding not later than 10 days after a determination to withhold such assistance is made: Provided further, That the Secretary shall, to the maximum extent practicable, assist such government in bringing the responsible members of such unit to justice. (h) Additional availability Subject to the regular notification procedures of the Committees on Appropriations, funds appropriated by this Act which are returned or not made available due to the second proviso under the heading Contributions for International Peacekeeping Activities in title I of this Act or section 307(a) of the Foreign Assistance Act of 1961 ( 22 U.S.C. 2227(a) ), shall remain available for obligation until September 30, 2025: Provided , That the requirement to withhold funds for programs in Burma under section 307(a) of the Foreign Assistance Act of 1961 shall not apply to funds appropriated by this Act. (i) Procurement restrictions None of the funds appropriated by this Act and prior Acts making appropriations for the Department of State, foreign operations, and related programs may be used for the procurement by any entity of the United Nations