U.S. Ammunition Linked to Mexican Cartel Violence

Recent revelations indicate that nearly half of the high-powered .50-caliber cartridges seized by Mexican authorities from drug cartels since 2012 can be traced back to the Lake City Army Ammunition Plant in Missouri, a facility owned by the United States government. According to Mexico’s defense secretary, General Ricardo Trevilla Trejo, approximately 137,000 .50-caliber rounds have been confiscated, with 47 percent originating from this U.S. military ammunition factory. These rounds are reportedly sold in gun shops across the southern United States.

New York Times

The Lake City Army Ammunition Plant is the largest manufacturer of rifle rounds for the American military. The findings were brought to light following a joint investigation by The New York Times and the International Consortium of Investigative Journalists, which highlighted the alarming trend of U.S.-made ammunition being utilized by organized crime groups in Mexico.

New York Times

Since the administration of President Claudia Sheinbaum began in October 2024, Mexican authorities have seized 18,000 firearms, with nearly 80 percent sourced from the United States. Among the confiscated weapons are .50-caliber Barrett rifles, grenade launchers, rocket launchers, and various machine guns. This influx of firearms and ammunition has raised significant concerns regarding the security situation in Mexico and the role of U.S. arms in fueling cartel violence.

New York Times

President Claudia Sheinbaum has stated that her administration is reviewing the findings from the investigation to engage in discussions with the U.S. government. She emphasized the need to understand how military-grade weapons, intended solely for U.S. Army use, are making their way into Mexico.

New York Times

General Trevilla Trejo remarked on the severity of the situation, noting the destructive potential of the seized weapons. He highlighted the urgent need for collaboration between the two nations to address the issue of arms trafficking.

New York Times

Critics of U.S. arms policies argue that the flow of weapons into Mexico exacerbates violence and undermines efforts to combat organized crime. Advocacy groups have called for stricter regulations on firearm sales in the U.S. and greater accountability for manufacturers and sellers of ammunition. They contend that without significant changes, the cycle of violence fueled by these weapons will continue unabated.

New York Times

While the Mexican government has provided specific figures regarding the origins of seized ammunition, there is a lack of comprehensive data on the broader implications of U.S. arms sales and their impact on violence in Mexico. Additionally, the extent to which U.S. authorities are aware of and addressing this issue remains unclear.

New York Times

“so that we can talk to the U.S. government about this issue and understand how it’s possible that these weapons, which are for the exclusive use of the U.S. Army, are entering Mexico.” — Claudia Sheinbaum, President of Mexico

New York Times