In this photo taken Thursday, Jan. 20, 2011, hospital staff prepare a room for the arrival of U.S. Rep. Gabrielle Giffords at TIRR Memorial Hermann Rehabilitation Hospital in Houston. Giffords is expected to be moved Friday to the Texas Medical Center hospital to begin the next phase of her recovery from a gunshot wound. (AP Photo/Smiley N. Pool, Pool)
Mourners gather at a candlelight vigil honoring Rep. Gabrielle Giffords and other victims of the recent shooting rampage took place in Tucson, Ariz., at Scripps College in Claremont , Calif., Tuesday, Jan. 18, 2011. Mrs. Giffords graduated from Scripps College. (AP Photo/Jae C. Hong)
** FILE ** Gun enthusiast D.J. Dorer of Yorktown, Va., carries his AR15 pistol outside the Capitol during a pro gun rally at the Capitol in Richmond, Va., Monday, Jan. 17, 2011. Speakers at Monday's event said tragedies such as the shooting spree in Arizona that wounded U.S. Rep. Gabrielle Giffords are no excuse for "destroying the Constitution." Instead, they called on lawmaker to relax Virginia's gun laws. (AP Photo/Steve Helber)
FILE - This combination image of three file photos shows Jared Lee Loughner, the gunman accused of trying to assassinate Arizona Rep. Gabrielle Giffords and killing six others. From left to right Loughner is seen at the Tucson Festival of Books in a March 2010 photo by Mamta Popat of the Arizona Daily Star, in an undated photo obtained from MySpace, and in another undated photo released by the Pima County Sheriff's Office to the The Arizona Republic. Loughner was not on any government watch list before the shooting. (AP Photo/Files) MANDATORY CREDIT. NO MAGAZINES. NO SALES.
This photo provided by ABC television shows Rep. Gabrielle Giffords' husband and NASA astronaut Capt. Mark Kelly talks with host Diane Sawyer during a pretaped interview in Tucson, Saturday, Jan. 15, 2011, his first television interview since the tragic shooting of his wife in Tucson. The interview is scheduled to air Tuesday, Jan. 18. (AP Photo/ABC News, Ralph Freso) NO ARCHIVES. NO SALES.
A poster outside of Rep. Gabrielle Giffords office in Tucson, Ariz., wishes her well Sunday, Jan. 16, 2011. Makeshift memorials have sprouted up around Tucson for the victims of the Jan. 8 shooting that killed six people and injured 13, including Giffords. (AP Photo/Susan Montoya Bryan)
Rep. Shelley Berkley, Nevada Democrat, meets with constituents Friday at her office in Las Vegas. It was one of the first such meetings to resume since the wounding of Rep. Gabrielle Giffords of Arizona. (Associated Press)
ABC News correspondent Christiane Amanpour (center) leads a town-hall event at St. Odilia Church in Tucson, Ariz., during a taping of "This Week" on Saturday, Jan. 15, 2011. The event brought together members of the community and residents who were involved in the Jan. 8 shooting in Tucson that claimed the lives of six people and wounded a number of others, including Rep. Gabrielle Giffords. (AP Photo/ABC-TV, Ralph Freso)
In this photo provided by the family, Christina Green is shown. Christina, 9, was killed at a political event with Rep. Gabrielle Giffords in Tucson, Ariz., on Saturday, Jan. 8, 2011. (AP Photo/Green Family)
