James Grimaldi

The United States may be behind the drug-related violence in Mexico, more than we think. According to a new Congressional report released yesterday, more than 70 percent of the guns detained in Mexico the past two years, originated in the U.S. On top of this, the ATF is under fire for reportedly supplying more than a 1,000 illegal firearms to gun traffickers in Mexico, in an operation called "Fast and Furious." They hoped selling the guns to "straw purchasers," would lead them to the crime organizations. Unfortunately, many of these guns were lost track of, and some were even tied to the shooting of an American border patrol officer. 

More and more guns used in drug-related crimes in Mexico are coming from U.S. dealers, according to a year-long investigation by The Washington Post. Many of the weapons are travelling south through the Texas city of Huston. But due to a law passed by Congress in 2003, the identities of the dealers selling the weapons are protected even as weapons they've sold show up at the scenes of violent crimes committed by drug cartels. For more on the story we're joined by a Pulitzer Prize-winning reporter who co-wrote today's investigative piece, Jame Grimaldi.