; (B) in subsection (b), in the subsection heading, by striking NAFTA and inserting USMCA ; (C) in subsection (c), in the subsection heading, by striking NAFTA and inserting USMCA ; and (D) by striking NAFTA each place it appears and inserting USMCA . (d) Additional clerical amendments The table of contents for this Act is amended by striking the item relating to subtitle A of title III and inserting the following: “Subtitle A—Relief From Injury Caused by Import Competition “Sec. 301. USMCA article impact in import relief cases under the Trade Act of 1974. “Sec. 302. Presidential action regarding USMCA imports.”. (e) Effective date (1) In general Each transfer, redesignation, and amendment made by this section shall— (A) take effect on the date on which the USMCA enters into force; and (B) apply with respect to an investigation under chapter 1 of title II of the Trade Act of 1974 ( 19 U.S.C. 2251 et seq.) initiated on or after that date. (2) Transition from NAFTA In the case of an investigation under chapter 1 of title II of the Trade Act of 1974 initiated before the date on which the USMCA enters into force— (A) the transfers, redesignations, and amendments made by this section shall not apply with respect to the investigation; and (B) sections 311 and 312 of the North American Free Trade Agreement Implementation Act ( 19 U.S.C. 3371 and 3372), as in effect on the day before that date, shall continue to apply on and after that date with respect to the investigation. 503. Temporary entry (a) Clerical amendment Subtitle B of title III of this Act is amended in the subtitle heading by striking [reserved] . (b) Nonimmigrant traders and investors Section 341 of the North American Free Trade Agreement Implementation Act ( Public Law 103–182 ; 107 Stat. 2116) is— (1) transferred to subtitle B of title III of this Act; (2) inserted after the heading (as amended by subsection (a)) of such subtitle; (3) redesignated as section 311; and (4) amended— (A) by striking subsections (b) and (c)