A Justice Department office that oversees criminal probes signed off on wiretaps used in a gun trafficking investigation that is the subject of growing controversy over tactics that allowed guns bought in the U.S. to enter Mexico illegally. The finding is from documents released Wednesday by Rep. Darrell Issa (R., Calif.), chairman of the House Oversight and Government Reform Committee. It's the first document released so far that indicates high-level Justice... (GunPolicy.org)