The U.S.-Mexico border is becoming more violent. The feds have been alerted through a memo to law enforcement throughout the southwest, telling them that Mexican commandos are now working for drug cartels. You'll be shocked to learn where the commandos were trained. The memo from the Justice Department warns that Mexican commandos were trained by U.S. forces, but switched sides. They are now using their deadly skills to work for the drug cartels. They were elite forces trained by the U.S. Army at Fort Benning, \Georgia to battle against the powerful drug cartels. They're known as "los zetas," but a...