MEXICO CITY — About 70 percent of the guns seized in Mexico and submitted to a U.S. gun-tracing program came from the United States, according to a report released by three U.S. senators Monday. Of the 29,284 firearms recovered by authorities in Mexico in 2009 and 2010, 20,504 came from the United States, according to figures provided to the senators by the Bureau of Alcohol, Tobacco, Firearms and Explosives. Most of those weapons — 15,131 — were U.S. made,... (GunPolicy.org)