; (ii) be the lead officer on the country team, under the Chief of Mission, responsible for implementation of the partnership agreement entered into under section 201 with that country; and (iii) carry out such other duties as the Director General or the Chief of Mission may assign for successful implementation of the Americas program. (4) Authorization of appropriations (A) In general There shall be available to the Secretary of Commerce, from the Re-shoring and Near-shoring Account established under section 301, $10,000,000 for each of fiscal years of 2024, 2025, and 2026 to administer this title and the amendments made by this title. (B) Availability of funds Amounts made available pursuant to subparagraph (A) shall be available until expended. (b) Office of United States Trade Representative (1) In general There shall be in the Office of the United States Trade Representative an Assistant United States Trade Representative for the Americas Partnership, who shall— (A) be responsible for negotiations with respect to— (i) the accession of countries to the USMCA pursuant to the mechanism developed pursuant to section 222(b); and (ii) designation of Americas partner countries as CBTPA beneficiary countries (as defined in section 213(b)(5) of the Caribbean Basin Economic Recovery Act, as amended by section 224); (B) hire the staff necessary to support negotiations described in subparagraph (A)