; (C) to investigate and respond to enforcement petitions filed under section 302 of the Trade Act of 1974 ( 19 U.S.C. 2412 ); and (D) to support capacity-building efforts undertaken by the United States pursuant to free trade agreements to which the United States is a party. (3) Since its establishment, the Trade Enforcement Trust Fund (under section 611 of the Trade Facilitation and Trade Enforcement Act of 2015 ( 19 U.S.C. 4405 )) has supported efforts to investigate discriminatory trade practices and enforce obligations relating to labor, the environment, intellectual property, and trade in goods and services among trading partners of the United States in Africa, Asia, Europe, and South America. (4) The renegotiation of the North American Free Trade Agreement presents an opportunity to further and expand the goals of the Trade Enforcement Trust Fund with respect to Mexico and Canada, particularly regarding the implementation and enforcement by Mexico of labor obligations under the United States-Mexico-Canada Agreement. 3. Modification of Trade Enforcement Trust Fund (a) Increase of amounts in fund Subsection (b) of section 611 of the Trade Facilitation and Trade Enforcement Act of 2015 ( 19 U.S.C. 4405 ) is amended— (1) in paragraph (1), by striking $15,000,000 and inserting $90,000,000 ; and (2) in paragraph (2), by striking $30,000,000 and inserting $105,000,000 . (b) Modification of administration of fund Subsection (d)(1) of such section is amended, in the matter preceding subparagraph (A)— (1) by striking relevant subordinate bodies of the TPC and inserting , relevant subordinate bodies of the TPC, and other Federal agencies as required by law ; and (2) by striking , only as provided by appropriations Acts, . (c) Use of certain amounts To implement labor obligations in free trade agreement with Mexico Subsection (d) of such section is amended— (1) by redesignating paragraph (2) as paragraph (3)