Us Code § 4512 - Relationship of the USMCA to United States and State law

Full text of Us Code United States Code § 4512 — Relationship of the USMCA to United States and State law, with citation guidance and answers to common questions.

§ 4512. Relationship of the USMCA to United States and State law

(a) Relationship of USMCA to United States law

(1) United States law to prevail in conflict

No provision of the USMCA, nor the application of any such provision to any person or circumstance, which is inconsistent with any law of the United States, shall have effect.

(2) Construction

Nothing in this Act shall be construed—

(A) to amend or modify any law of the United States, or

(B) to limit any authority conferred under any law of the United States,


unless specifically provided for in this Act.

(b) Relationship of USMCA to State law

(1) Legal challenge

No State law, or the application thereof, may be declared invalid as to any person or circumstance on the ground that the provision or application is inconsistent with the USMCA, except in an action brought by the United States for the purpose of declaring such law or application invalid.

(2) Definition of State law

For purposes of this subsection, the term "State law" includes—

(A) any law of a political subdivision of a State; and

(B) any State law regulating or taxing the business of insurance.

(c) Effect of USMCA with respect to private remedies

No person other than the United States—

(1) shall have any cause of action or defense under the USMCA or by virtue of congressional approval thereof; or

(2) may challenge, in any action brought under any provision of law, any action or inaction by any department, agency, or other instrumentality of the United States, any State, or any political subdivision of a State, on the ground that such action or inaction is inconsistent with the USMCA.

(Pub. L. 116–113, title I, §102, Jan. 29, 2020, 134 Stat. 15.)


Editorial Notes

References in Text

This Act, referred to in subsec. (a)(2), is Pub. L. 116–113, Jan. 29, 2020, 134 Stat. 11, known as the United States-Mexico-Canada Agreement Implementation Act. For complete classification of this Act to the Code, see Short Title note set out under section 4501 of this title and Tables.

About This Section

19 U.S.C. § 4512 is part of Title 19 of the United States Code. The United States Code is the official codification of federal statutes maintained by the Office of the Law Revision Counsel of the U.S. House of Representatives. Congress amends the Code through new public laws, which are eventually incorporated into the relevant title.

This section may be cited in legal writing as 19 U.S.C. § 4512. For the most current official text, including any recent amendments, use the official source links below. Do not rely on this page as the sole authority for legal citation or litigation.

How to Read This Statute

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Sources

Source: official Us Code text · Last verified 2026-08-27

Frequently Asked Questions About Us Code § 4512

What does United States Code § 4512 cover?

Section 4512 ("Relationship of the USMCA to United States and State law") is part of the United States Code, the codified statutory law of Us Code. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.

How do I cite Us Code § 4512?

A common citation format is "United States Code § 4512" (Us Code). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.

Is this the official text of Us Code law?

No. This page is for research and education and may not include the most recent amendments. For official current law, check the Us Code official source linked on this page or consult a licensed Us Code attorney.

How does Us Code § 4512 apply to my situation?

Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Us Code can advise on how this section applies to you. Contact your state or local bar association for a referral.

Sources & Verification

Not legal advice. Verify against the official source and consult a licensed attorney in Us Code.