WASHINGTON — In a report issued Tuesday by two powerful Republicans in Congress, the Justice Department was accused of conducting an operation that allowed nearly 1,000 guns to flow illegally into Mexico, including two that were eventually found at the scene of the murder of an American Border Patrol agent. The report, by Senator Charles E. Grassley of Iowa and Representative Darrell Issa of California, said the 2009 operation in Arizona by the Bureau of Alcohol,... (GunPolicy.org)