USMCA Joint Review could establish Rapid Response Environment Mechanism to address environmental violations

The Rapid Response Labor Mechanism

On July 1, 2020, the USMCA entered into force, establishing the RRLM—a first-of-its-kind enforcement tool designed to address alleged labor violations in Mexico on a facility-specific basis. The Mechanism permits the United States to request the expedited review by an independent, three-person panel of a specific facility’s alleged “Denial of Rights” of free association or collective bargaining.

The RRLM can be triggered by a public petition alleging a “Denial of Rights” submitted to the Interagency Labor Committee for Monitoring and Enforcement (ILC), which is co-chaired by the Office of the United States Trade Representative (USTR) and the Department of Labor. Subsequently, the ILC has thirty days to determine whether the petition provides sufficient evidence of a Denial of Rights to justify submitting a formal request for review by Mexican authorities. Mexico is afforded ten days to agree to conduct a review and, if it agrees, it must conclude its investigation within forty-five days. During this time, the United States may suspend the liquidation of duties for the goods at issue. If Mexico finds that a Denial of Rights has occurred, the United States and Mexico must attempt to develop a course of remediation to rectify the violations.

However, if Mexico (1) decides not to conduct a review, (2) determines no labor violation occurred, or (3) cannot agree to a course of remediation, the United States may request the formation of a Rapid Response Labor Panel to determine whether there has been a “Denial of Rights.” If the Panel finds a labor violation took place, the United States may impose certain trade remedies, including the suspension of preferential tariff treatment for goods manufactured at the facility or the imposition of other trade penalties targeting goods or services from the facility. Such measures will only be lifted once the parties agree that the “Denial of Rights” has been sufficiently remedied. For entities that have received at least two previous “Denial of Rights” determinations, remedies may also include the denial of entry into the United States for goods produced at the relevant facility.

Notably, the RRLM only applies to a “Covered Facility” under the USMCA, which is defined as a facility that manufactures goods, supplies services, or involves mining and that (1) produces a good or supplies a service traded between the United States and Mexico or (2) produces a good or supplies a service that competes in the territory of one party with a good or service of the other party.

Effectiveness of the Rapid Response Labor Mechanism

Since its inception, the United States has sought Mexico’s review under the RRLM in forty-seven cases. Twelve cases (approximately 25 percent) resulted in a formal course of remediation between the United States and Mexico, twenty cases (approximately 42 percent) were resolved during the review period, six cases were resolved via determinations of a Panel or are currently pending before a Panel, and nine cases are still undergoing review. While more than two-thirds of cases under the RRLM have been resolved without the formation of a Rapid Response Labor Panel, adverse Panel determinations can carry significant financial and reputational consequences for both Mexican companies and U.S. importers. In addition, companies subject to the RRLM have expressed troubling and repeated concerns over the lack of due process in the RRLM – including the inability to participate fully in the ILC and Panel processes.

The implementation of an Environmental Mechanism

The establishment of an RREM would likely target alleged violations of the USMCA’s Environmental Chapter and other relevant environmental standards that may come into force as part of the USMCA review process as well as violations of certain multi-party environmental treaties such as CITES. Indeed, as with the implementation of the USMCA, we may also see a Mexican commitment to strengthen domestic environmental protection laws. We expect that the RREM would be administered through procedural mechanisms analogous to the RRLM, although we hope that the Parties would address some of the serious due process concerns that have emerged in the mechanism.

The RREM concept is gaining political support. Indeed, 21 Senate Democrats recently sent a letter to the USTR advocating for strengthened environmental protections in the USMCA, including through the establishment of a Rapid Response Mechanism to cover environmental impacts. Additionally, other interested stakeholders and environmental groups have made similar overtures, including during a December 2025 public hearing convened by USTR to solicit comments ahead of the joint review.

Hogan Lovells capabilities

Hogan Lovells has extensive experience and maintains strong firmwide capabilities to support clients as they prepare for and/or participate in the RRLM and/or RREM process, both in the United States and Mexico. Indeed, in 2024, Hogan Lovells successfully represented a client before the first-ever convening of a Rapid Response Labor Panel. In this precedent-setting decision, the Panel unanimously found that it lacked jurisdiction under the USMCA to decide the case on the merits, dismissing the United States’ case against our client in its entirety.

In preparation for the new RREM, Hogan Lovells has already assembled an RREM taskforce that includes U.S. trade and environmental attorneys, U.S. attorneys focused on complex multi-agency government investigations, and attorneys based in Hogan Lovells’ Mexico City office focusing on environmental law and regulatory enforcement matters. Led by the International Trade and Investment practice group in Washington D.C., the Hogan Lovells team coordinates across practices and borders to ensure best-in-class capabilities are brought to bear in support of our clients.

Our Hogan Lovells team brings a unique and experienced perspective to such issues. Indeed, Jared Wessel was one of the lawyers who supervised the trade and labor portfolio while Assistant General Counsel at USTR. Similarly, Mayur Patel previously served as Chief International Trade Counsel for the U.S. Senate Committee on Finance, where he oversaw the negotiation and implementation of the USMCA.

Please reach out to any of the listed contacts if you have any questions regarding the RREM, RRLM, or other USMCA-related matters.

Authored by Jared Wessel and Stephen Finan.

Special thanks to summer associate Kaveh Badrei who contributed to this report.