Mexico's Defense Minister confirmed that the U.S. military conducted two flights near Mexican territory in late January and early February. The aircraft did not violate national airspace and followed international regulations. The U.S. has increased aerial surveillance of drug cartels, with spy planes flying missions near Mexico's Baja California Peninsula. Mexico has moved troops to its northern border to address illegal migration and drug smuggling, following an agreement with the U.S. President Trump designated drug cartels as terrorist organizations, prompting a strong denial from Mexican President Claudia Sheinbaum regarding allegations of alliances with criminal organizations.
Source: https://www.ktsa.com/u-s-military-planes-might-be-spying-on-cartels-mexico-says/