carry out section 3 of the Marine Debris Act ( 33 U.S.C. 1952 ) during fiscal years 2020 through 2023 in the North American region: Provided further , That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. Office of the United States Trade Representative Salaries and Expenses For an additional amount for “Salaries and Expenses”, $50,000,000, to remain available until September 30, 2023: Provided , That $30,000,000 shall be available solely to provide for additional capacity of the Office during fiscal years 2020 through 2023 to monitor compliance with labor obligations (as such term is defined in section 701 of this Act), including the necessary expenses of additional full-time employees to participate in the Interagency Labor Committee for Monitoring and Enforcement established pursuant to section 711 of this Act: Provided further , That $20,000,000 shall be available to reimburse the necessary expenses of personnel participating in the Interagency Environment Committee for Monitoring and Enforcement established pursuant to section 811 of this Act during fiscal years 2020 through 2023 to monitor compliance with environmental obligations (as such term is defined in section 801 of this Act), including up to 1 additional full-time employee detailed to the United States Embassy in Mexico from each of the United States Fish and Wildlife Service, the Environmental Protection Agency, and the National Oceanic and Atmospheric Administration: Provided further , That, if the United States Trade Representative determines that the additional amount appropriated under this heading in this Act exceeds the amount sufficient to provide for the reimbursement of personnel specified in the previous proviso, such excess amounts may be used to reimburse the necessary expenses of additional personnel participating in the Interagency Environment Committee for Monitoring and Enforcement during fiscal years