The ranking Democrat on the House committee investigating the controversial federal gun-trafficking operation known as Fast and Furious accused its Republican chairman on Wednesday of stifling discussion of whether U.S. gun laws have contributed to the violence in Mexico. A report released Wednesday by Rep. Elijah E. Cummings (D-Md.) said weak laws impede federal firearms agents trying to counter gun trafficking by Mexican drug cartels. It criticizes Rep. Darrell Issa... (GunPolicy.org)