A Capitol Police officer stands in front of the office of  Rep. Gabrielle Giffords, Arizona Democrat, in the Longworth House Office Building on Capitol Hill in Washington, Monday, Jan. 10, 2011. Mrs. Giffords was shot Saturday in a Tucson shooting rampage that left six people dead. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

A Capitol Police officer stands in front of the office of Rep. Gabrielle Giffords, Arizona Democrat, in the Longworth House Office Building on Capitol Hill in Washington, Monday, Jan. 10, 2011. Mrs. Giffords was shot Saturday in a Tucson shooting rampage that left six people dead. (AP Photo/Charles Dharapak)