Overview
- Ambassador Ronald Johnson said the two countries closed 2025 with “historic advances” in security, migration, environmental action and border control, describing illegal crossings as at historically low levels.
- Mexico and the United States signed Acta 333 on December 15 through the International Boundary and Water Commission to address Tijuana River sewage via infrastructure projects, research, monitoring and planning.
- Officials reported 2025 security coordination under the Entendimiento Bicentenario that included information sharing and joint operations targeting synthetic drugs, weapons and human trafficking.
- Reports also cited the transfer of 55 alleged Mexican drug leaders to the United States in February and August 2025 as part of efforts against transnational organized crime.
- Johnson said cooperation will continue in 2026 through existing institutional channels, with ongoing technical work tied to the T-MEC, while noting no new accords were announced.