The future of the United States-Mexico-Canada Agreement (T-MEC) hinges on Mexico’s full cooperation, warned Jamieson Greer, the White House trade representative, ahead of his meeting with Mexico’s President Claudia Sheinbaum this Thursday.

Greer’s remarks came during a Senate hearing, where he emphasized that the Biden administration will find it difficult to support the renewal or revision of the trade deal if Mexico does not engage on critical issues such as border security and the water treaty.

“From the president’s perspective, it’s clear that if we want a beneficial trade relationship with Mexico, Mexico must also collaborate on these matters,” Greer said. He highlighted that while some issues fall outside his direct remit, the administration expects Mexico to uphold its commitments, especially regarding the water treaty—a key point in the ongoing negotiations.

This firm stance was formalized on July 1, when the U.S. decided not to automatically endorse the treaty’s continuation but instead initiated a review process outlined within the agreement itself. Greer explained that this period will be used to push for substantial changes aimed at addressing longstanding concerns, including the growing trade deficit with Mexico and insufficient U.S. investment by the automotive sector.

Another major concern for Washington is the involvement of third countries like Vietnam or China in regional trade, which the U.S. wants to limit to ensure benefits remain within North America. The administration is actively reviewing various treaty provisions to strengthen domestic production in the United States.

Greer also linked the T-MEC review to broader diplomatic and security agendas. While the water dispute primarily falls under the State Department’s jurisdiction, he stressed that Mexico’s cooperation on border security and water treaty obligations is essential to maintain a strong commercial partnership.

For Mexican migrants and international residents in Mexico, these developments signal a critical moment in North American trade relations. The outcome of this dialogue could influence economic opportunities and cross-border dynamics in the months ahead. As the meeting unfolds this Thursday, all eyes will be on how Mexico balances these demands while advancing its own economic and social priorities.