Cartel corruption claims push US-Mexico relations to breaking point

US-Mexico relations are strained due to US accusations of Mexican officials colluding with drug cartels. DEA Director Terry Cole testified that high-ranking Mexican officials have been involved with traffickers for years, contributing to the flow of drugs into the US. Mexican presidential candidate Claudia Sheinbaum stated that while Mexico desires a good relationship with the US, it will defend its sovereignty. This tension follows months of US pressure on Mexico to combat drug trafficking, with recent reports of CIA agents operating in Mexico further complicating the situation. Former Mexican Foreign Minister Jorge Castañeda described the current diplomatic climate as the most difficult since the 1980s.

Mexican President Claudia Sheinbaum has vehemently denied reports from CNN and The New York Times alleging that CIA operatives participated in direct operations, including targeted assassinations, against drug cartels on Mexican soil. Speaking at a press conference on Wednesday, May 13, 2026, Sheinbaum dismissed the reports as "lies" and "fiction," emphasizing that such foreign involvement without Mexican government permission would violate the country's security laws. The CIA has also denied the reports, though CNN stated it stands by its reporting. These allegations suggest a previously unreported expansion of US intelligence activity within Mexico, with one report citing a March 2026 explosion that killed a Sinaloa Cartel member. While Mexico acknowledges intelligence sharing with the US, it maintains that US forces do not operate independently on its territory.