As the gun control debate swirls around issues like background checks and mental health, a new study reveals that gun running into Mexico remains a large-scale problem. In their report, titled "The Way of the Gun," researchers at the University of San Diego's Trans-Border Institute estimated that as many as 253,000 firearms were purchased in the United States from 2010 to 2012 for the sole purpose of being trafficked across the border into Mexico. The figure is nearly... (GunPolicy.org)