; and (C) effectively implementing and enforcing policies and procedures on the appropriate use of travel funds, including restrictions on first class and business class travel. (2) Waiver The restrictions imposed by or pursuant to paragraph (1) may be waived on a case- by-case basis if the Secretary of State determines and reports to the Committees on Appropriations that such waiver is necessary to avert or respond to a humanitarian crisis. (3) Posting of report The report required by paragraph (1) shall be posted on the Department of State website not later than 7 days following submission to the Committees on Appropriations. (c) Assessments (1) Contributions to international organizations With the exception of organizations from which the United States has withdrawn, funds appropriated by this Act and prior Acts making appropriations for the Department of State, foreign operations, and related programs under the heading Contributions to International Organizations 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 Department of State in A/RES/73/271 on December 22, 2018: Provided , That funds shall 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. (2) Contributions for international peacekeeping activities Funds appropriated by this Act and prior Acts making appropriations for the Department of State, foreign operations, and related programs under the heading Contributions for International Peacekeeping Activities shall be made available for payment of United States assessed contributions to United Nations peacekeeping operations at not less than 25 percent of the total of all assessed contributions for peacekeeping operations, pursuant to section 404(b)(2) of the Foreign Relations Authorization Act, Fiscal Years 1994 and 1995 ( Public Law 103–236 ). (d)