Any action proclaimed by the President under the authority of this Act that is not subject to the consultation and layover provisions under section 4514 of this title may not take effect before the 15th day after the date on which the text of the proclamation is published in the Federal Register.
The 15-day restriction contained in paragraph (2) on the taking effect of proclaimed actions is waived to the extent that the application of such restriction would prevent the taking effect on the date on which the USMCA enters into force of any action proclaimed under this section.
Except as provided by paragraph (2) or (3), initial regulations necessary or appropriate to carry out the actions required by or authorized under this Act or proposed in the statement of administrative action approved under section 4511(a)(2) of this title to implement the USMCA shall, to the maximum extent feasible, be prescribed within 1 year after the date on which the USMCA enters into force.
In the case of any implementing action that takes effect on a date after the date on which the USMCA enters into force, initial regulations to carry out that action shall, to the maximum extent feasible, be prescribed within 1 year after such effective date.
For purposes of paragraphs (1) and (2), with respect to any good for which the base rate in the Schedule of the United States to Annex 2–B of the USMCA is a specific or compound rate of duty, the President shall substitute for the base rate an ad valorem rate that the President determines to be equivalent to the base rate.
In implementing the tariff-rate quotas set forth in the Schedule of the United States to Annex 2–B of the USMCA, the President shall take such actions as may be necessary to ensure that imports of agricultural goods do not disrupt the orderly marketing of agricultural goods in the United States.
Subject to the consultation and layover provisions of section 4514 of this title, the President may proclaim modifications to the provisions proclaimed under the authority of subparagraph (A), other than the provisions of chapters 50 through 63 of the USMCA.