According to the Department of Justice, the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is the lead federal agency responsible for stopping the illegal flow of firearms, or gun trafficking, from the United States to Mexico. ATF has developed a nationwide strategy to reduce firearms trafficking and violent crime by seeking to prevent convicted felons, drug traffickers, and juvenile gang members from acquiring firearms from gun traffickers. These criminals often acquire firearms from persons who are otherwise not prohibited from possessing firearms, or by buying firearms from corrupt federal firearms licensees (FFLs) who sell firearms off-the-books in an attempt to escape federal regulation. ATF also reports that Mexican drug trafficking organizations (DTOs) are increasingly sending enforcers across the border to hire surrogates (straw purchasers) who buy several "military-style" firearms at a time from FFLs. The DTOs also reportedly favor pistols chambered to accommodate comparatively large cartridges that are capable of piercing through armor vests usually worn by law enforcement officers, and magazines capable of holding more than 10 rounds of ammunition. Less frequently, but no less troubling to law enforcement, the DTOs have also sought .50 caliber sniper rifles that are capable of penetrating bullet-proof glass and lightly armored ...