Sen. Mark Kirk, R- Ill., right, helped by Senate Sergeant at Arms and Doorkeeper Terrance Gainer, walks on Capitol Hill in Washington, Thursday, Jan. 3, 2013, before climbing the steps

 

              Sen. Mark Kirk, R- Ill., right, helped by Senate Sergeant at Arms and Doorkeeper Terrance Gainer, walks on Capitol Hill in Washington, Thursday, Jan. 3, 2013, before climbing the steps
Sen. Mark Kirk, R- Ill., right, helped by Senate Sergeant at Arms and Doorkeeper Terrance Gainer, walks on Capitol Hill in Washington, Thursday, Jan. 3, 2013, before climbing the steps to the Senate. Kirk said he often visualized climbing the 45 steps of the U.S. Capitol as a source of inspiration during his months of grueling physical therapy after suffering a major stroke last year. Applauding in the foreground, from left are, Senate Majority Whip Richard Durbin of Ill., Sen. Joe Manchin, D-W.Va., and Vice President Joe Biden. (AP Photo/ Evan Vucci)