President Barack Obama greets visitors in the Oval Office of the White House in Washington, Thursday, Feb. 17, 2011, after signing the John M. Roll United States Courthouse Bill in honor of federal ... more 
President Barack Obama greets visitors in the Oval Office of the White House in Washington, Thursday, Feb. 17, 2011, after signing the John M. Roll United States Courthouse Bill in honor of federal judge John M. Roll who was killed in the Tucson, Ariz., attack which wounded Rep. Gabrielle Giffords, D-Ariz., From left are, Rep. Paul Gosar, R-Ariz.; Rep. Jeff Flake, R-Ariz.; Homeland Security Secretary Janet Napolitano; Sen. John McCain, R-Ariz.; Pia Carusone, chief of staff to Rep. Gabrielle Giffords, D-Ariz.; Rep. Ed Pastor, D-Ariz; Rep. Trent Franks, R-Ariz.; and Rep. David Schweikert, R-Ariz. less 
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Associated Press | Photo By Charles Dharapak
Thu, Feb 17, 2011 2:28 PM EST