U.S. Military Personnel Briefly Enter Mexican Territory at Nogales; Sheinbaum Calls Incident Minimal

A small group of U.S. military personnel accidentally crossed into Mexican territory at Nogales, Sonora by a few meters during operations along the border. President Sheinbaum characterized the incident as 'minimal — just a few meters,' unintentional, and immediately reversed — ruling out any sovereignty violation. Mexico's Foreign Ministry (SRE) lodged a formal notification. The incident nonetheless attracted media attention given the sustained background of tensions over the Trump administration's 'all options' rhetoric regarding potential U.S. military operations against drug cartels on Mexican soil. Sheinbaum has drawn a firm red line against any unauthorized foreign military presence in Mexico.