U.S. Representative Gabrielle Giffords tours the Gabrielle Giffords Family Assistance Center with her District Director Ron Barber (L) in Tuscon, Arizona January 23, 2012. Representative Gabrielle Giffords, shot in the head during a shooting spree in Tucson, Arizona, last year, said Sunday she will step down this week from the U.S. Congress to focus on her recovery. Giffords' office said the congresswoman would submit her letter of resignation this week to House Speaker John Boehner and Arizona Governor Jan Brewer. REUTERS/Matt York/Pool (UNITED STATES - Tags: POLITICS)