; and (3) effectively implementing and enforcing policies and procedures on the appropriate use of travel funds, including restrictions on first-class and business-class travel. (b) Restrictions on united nations delegations and organizations (1) Restrictions on united states delegations None of the funds made available by this Act may be used to pay expenses for any United States delegation to any specialized agency, body, or commission of the United Nations if such agency, body, or commission is chaired or presided over by a country, the government of which the Secretary of State has determined, for purposes of section 1754(c) of the Export Reform Control Act of 2018 ( 50 U.S.C. 4813(c) ), supports international terrorism. (2) Restrictions on contributions None of the funds made available by this Act may be used by the Secretary of State as a contribution to any organization, agency, commission, or program within the United Nations system if such organization, agency, commission, or program is chaired or presided over by a country the government of which the Secretary of State has determined, for purposes of section 620A of the Foreign Assistance Act of 1961, section 40 of the Arms Export Control Act, section 1754(c) of the Export Reform Control Act of 2018 ( 50 U.S.C. 4813(c) ), or any other provision of law, is a government that has repeatedly provided support for acts of international terrorism. (3) Waiver The Secretary of State may waive the restriction in this subsection if the Secretary determines and reports to the Committees on Appropriations that to do so is important to the national interest of the United States, including a description of the national interest served. (c) United nations human rights council None of the funds appropriated by this Act may be made available in support of the United Nations Human Rights Council unless the Secretary of State determines and reports to the Committees on Appropriations that participation in the Council is important to the national interest of the United