President Claudia Sheinbaum said Mexico will continue coordinating with the U.S. on security and the fight against crime without ceding national sovereignty.

This stance defines the boundary of the bilateral relationship, signaling that while Mexico seeks operational partnership to curb violence, it will reject any framework that implies subordination to U.S. authority.

During a bilateral meeting with U.S. National Security Secretary Alejandro Mullin, Sheinbaum said, "Today we agreed to strengthen cooperation in security and migration" [2]. The discussions focused on joint efforts to combat organized crime and manage irregular migration flows across the shared border.

In subsequent public briefings in late May 2026, the president clarified the limits of this partnership. Sheinbaum said, "We will maintain cooperation with the United States in matters of security, but without allowing schemes of subordination or joint operations of foreign forces within Mexican territory" [1].

Sheinbaum also highlighted the results of current migration policies. She said that Mexico has reduced irregular crossings into the U.S. by 97.5% [0]. This figure serves as a primary metric for the administration to demonstrate the effectiveness of its current coordination with Washington.

Reports regarding the specific timing of these announcements vary. Some records indicate the initial agreement occurred on May 21, 2026 [2], while others note the commitment was reiterated during a morning press conference on May 27, 2026 [3].

Regardless of the date, the president emphasized that the commitment to bilateral cooperation remains a priority for the administration. Sheinbaum said she reiterated this commitment to the fight against crime during her May 27 press conference [3].

“Mexico will continue coordinating with the U.S. on security and the fight against crime without ceding national sovereignty.”

The administration of Claudia Sheinbaum is attempting a delicate balancing act: maintaining the security assistance and intelligence sharing necessary to fight cartels while avoiding the political fallout of appearing too compliant with U.S. interests. By explicitly ruling out foreign military operations on Mexican soil, Sheinbaum is drawing a hard line on sovereignty to satisfy domestic nationalist sentiments, even as she leverages high-percentage reductions in migration to maintain diplomatic leverage with the U.S. government.