Online NewsHour: A Closer Look at NSA -- December 20, 2005The Bush administration has recently come under fire for authorizing the National Security Agency to spy on people in the United States suspected of terrorism ties. Two experts discuss the powers of NSA. GWEN IFILL: Now, a look behind President Bush's decision to authorize a little-known spy agency to eavesdrop on Americans.The National Security Agency, or NSA, is normally tasked with o
