President Barack Obama embraces retiring Rep. Gabrielle Giffords, D-Ariz., as members of Congress applaud before his State of the Union address in front of a joint session of Congress Tuesday, Jan. 24, 2012, on Capitol Hill in Washington. (AP Photo/Saul Loeb)

Photo by: Saul Loeb

President Barack Obama embraces retiring Rep. Gabrielle Giffords, D-Ariz., as members of Congress applaud before his State of the Union address in front of a joint session of Congress Tuesday, Jan. 24, 2012, on Capitol Hill in Washington. (AP Photo/Saul Loeb)