Gun traffickers have quietly moved what they say is an unprecedented number of weapons from the United States to Mexico. Our reporter Paulina Villegas followed the trail of these guns.

A surge of weapons is flowing from the U.S. to Mexico. These firearms — sourced from gun shops, shows, websites and apps — are funneled across the border to fuel the country’s most violent crimes.

A study tracks how the North American Free Trade Agreement and trade competition with Mexico led to earlier deaths for American factory workers.

President Trump wants to strike cartels inside Mexico. In Sinaloa State, a cartel stronghold, some residents said they were willing to entertain U.S. intervention.

At a gathering in Florida, the president asked the leaders of a dozen Latin American and Caribbean nations to help the U.S. military crush armed trafficking groups.