exception of organizations from which the United States has withdrawn, funds appropriated by this Act and prior Acts making appropriations for the Department of State, foreign operations, and related programs under this heading shall be made available for payment of the full United States assessment to the United Nations regular budget at 22 percent for 2019, 2020, and 2021, as agreed to by the United States Mission as a Member State to the United Nations in A/RES/73/271 on December 22, 2018: Provided further , That such funds shall also be made available for the full United States assessment for other international organizations funded under this heading unless otherwise provided for by this Act or another provision of law: Provided further , That the Secretary of State shall, at the time of the submission of the President’s budget to Congress under section 1105(a) of title 31, United States Code, transmit to the Committees on Appropriations the most recent biennial budget prepared by the United Nations for the operations of the United Nations: Provided further , That the Secretary of State shall notify the Committees on Appropriations at least 15 days in advance (or in an emergency, as far in advance as is practicable) of any United Nations action to increase funding for any United Nations program without identifying an offsetting decrease elsewhere in the United Nations budget: Provided further , That any payment of arrearages under this heading shall be directed to activities that are mutually agreed upon by the United States and the respective international organization and shall be subject to the regular notification procedures of the Committees on Appropriations: Provided further , That none of the funds appropriated under this heading shall be available for a United States contribution to an international organization for the United States share of interest costs made known to the United States Government by such organization for loans incurred on or after October 1, 1984, through external borrowings.