Gabrielle Giffords, the former congresswoman who was shot and left handicapped after a gunman opened fire at an event in Tucson, Ariz., and her husband retired Navy Capt. Mark Kelly prepare to testify before a Senate Judiciary Committee hearing on gun violence in Washington, D.C., on Jan. 2013.
U.S. Senator Richard Blumenthal, D-Conn., former U.S. Rep. Gabrielle Giffords and her husband, former astronaut Mark Kelly, leave the Newtown Municipal Building in Newtown, Conn. on Jan. 4, 2013. Giffords met with Newtown officials on Friday afternoon before heading to visit with families of the victims of the Sandy Hook Elementary School massacre.
Gabrielle Giffords waves to the Space Shuttle Endeavor with her husband, former astronaut Mark Kelly as it flies over Tucson, Ariz. on its way to Los Angeles, on Sept. 20, 2012. Kelly served as Endeavour's last space commander months after Giffords survived serious head injuries because of a 2011 shooting.
Gabrielle Giffords blows a kiss after reciting the Pledge of Allegiance during the final session of the Democratic National Convention in Charlotte, N.C. on Sept. 6, 2012.
Gabrielle Giffords stands on top of a peak in the French Alps with her husband Mark Kelly, right,, and mountain guide Vincent Lameyre, July 23, 2012. On her first trip out of the country since her injury in 2011, she rode a two-stage cable car to a station for spectacular views of Mont Blanc.
Ron Barber, right, celebrates his victory with Giffords, left, prior to speaking to supporters at a post election event, Tuesday, June 12, 2012, in Tucson, Ariz. Barber, Giffords' former district director, won her seat in a special election after she resigned to focus on her recovery.
Democratic Florida Rep. Debbie Wasserman Schultz, read Rep. Gabriell Giffords resignation speech on the House floor on Wednesday, Jan. 25, 2012. The day after President Obama's State of the Union speech, Giffords formally offered her resignation to Speaker John Boehner. Weeping, Shultz applauded the strength of her friend and colleague, "I'm so proud of my friend."
President Barack Obama hugs retiring Congresswoman Gabrielle Giffords as the president arrives to deliver his State of the Union address on Tuesday, Jan. 24, 2012.
Rep. Gabrielle Giffords, D-Ariz., left, and Pelosi, right, posing with Giffords husband, former astronaut Mark Kelly of the Navy, at his retirement ceremony with Vice President Joe Biden in the Old Executive Office Building on the White House complex in Washington, Thursday, Oct. 6, 2011.
Rep. Gabrielle Giffords returns to the House for the first time since she was shot, making a dramatic entrance on Monday, Aug. 1, 2011, during a crucial debt vote. She drew loud applause and cheers from surprised colleagues.
Rep. Gabrielle Giffords poses for a photo the day after the launch of NASA space shuttle Endeavour and the day before she had her cranioplasty surgery, outside TIRR Memorial Hermann Hospital May 17, in Houston, Texas. Aides of Rep. Gabrielle Giffords posted two recent photos of the congresswoman to her public Facebook page, the first since the January 8 shooting that killed six people and wounded a dozen others.
Emergency workers use a stretcher to move Rep. Gabrielle Giffords after she was shot in the head outside a shopping center in Tucson, Ariz., on Saturday, Jan. 8, 2011.
In this Jan. 5, 2011 file photo, House Speaker John Boehner re-enacts the swearing in of Rep. Gabrielle Giffords on Capitol Hill in Washington.
Rep. Giffords, left, speaks during a candidates debate with Republican candidate Jesse Kelly at the University of Arizona in Tucson, Ariz., on Oct. 18, 2010. Kelly is an Iraq War veteran and was the Tea Party favorite for the 8th congressional district seat.
Rep. Gabrielle Giffords meets with constituents in Douglas, Ariz., in 2010. Giffords, 40, took office in January 2007, emphasizing issues such as immigration reform, embryonic stem-cell research, alternative energy sources and a higher minimum wage.
Rep. Giffords speaks during a press conference in Washington, D.C., where members of Congress called on the President to secure the border with the National Guard on April 28, 2010.
This picture provided by the office of Rep. Gabrielle Giffords on Monday, March 22, 2010, shows damage to her office in Tucson, Ariz. The congressional office was vandalized a few hours after the House vote overhauling the nation's health care system.
Rep. Gabrielle Giffords, D-Ariz., center, gives a tour of Statuary Hall in the Capitol to Shuttle Discovery STS-124 astronauts Mission Specialist Akihiko Hoshide, of Japan, and her husband, Commander Mark Kelly, on Thursday, July 17, 2008.
From right. Rep. Ken Calvert, Rep. Dennis Moore, Rep. Gabrielle Giffords, and Rep. Heath Shuler, attend a House Ways and Means Subcommittee on Social Security hearing on current and proposed employment eligibility verification systems on May 6, 2008. The hearing provided a forum for lawmakers on both sides of the immigration debate, focusing on a system to verify the legal status of workers and job applicants.
Gabrielle Giffords with U.S. Navy Cmdr. Mark Kelly, a NASA astronaut, at their wedding in Amado, Ariz., on Nov. 10, 2007. Kelly's twin brother, also an astronaut, is a commander on the International Space Station. "We have a unique vantage point here aboard the International Space Station. As I look out the window, I see a very beautiful planet that seems very inviting and peaceful. Unfortunately, it is not," said Scott Kelly of the tragedy that befell his sister-in-law.
Representatives-elect including Dean Heller, top right, and Gabrielle Giffords, next to Heller, prepare for the freshman class picture for the 110th Congress on the House Steps on Nov. 14, 2006.
Rep. Gabrielle Giffords rides horseback in 2006. In an interview with NPR last year, she recalled working with horses during her adolescence in Tucson. "I loved cleaning out the stalls, and I did that in exchange for riding lessons. And I continue to ride most of my life. And I learned a lot from horses and the stable people ... I think it provided good training, all of that manure-shoveling, for my days in politics ahead."
A page entitled, "Just do it!" in La Semeuse, the Scripps College yearbook in 1993. The photo at right shows Giffords in traditional Mennonite clothing. That same year, she won a Fulbright award to study Mennonites and other Anabaptist groups in Northern Mexico. Gifford's senior thesis was titled "Wish Books and Felt-Tipped Fantasies: The Sociology of Old Colony Mennonite Drawings."
Gabrielle Giffords' senior portrait from the 1993 Scripps College yearbook. Giffords double-majored in Latin American studies and sociology. A Dean's List student, Gifford won several awards during her time at Scripps.
Gabrielle Giffords, right, laughs with her mom, Gloria Kay Fraser Giffords, in a photo published in the Scripps College yearbook. Gabrielle received a B.A. in Sociology and Latin American history from Scripps College in Claremont, Calif. in 1993.
University High School portrait of Gabrielle Giffords, class of 1988. Dr. John Hosmer, taught history to the future lawmaker. He tells msnbc.com, "Gabrielle sat in the front row. She was inquisitive ... She was a very mature person from the moment she walked in the door."