President Obama shakes hands with the new director of the U.S. Secret Service Director Julia Pierson after she was sworn in by Vice President Joseph R. Biden in the Oval Office of the White House in Washington on March 27, 2013. Pierson is the first female director in the agency's 148-year history. (Associated Press)
President Obama shakes hands with the new director of the U.S. Secret Service Director Julia Pierson after she was sworn in by Vice President Joseph R. Biden in the Oval Office of the White House in Washington on March 27, 2013. Pierson is the first female director in the agency's 148-year history. (Associated Press)
Julia Pierson, U.S. Secret Service chief of staff. President Obama to name her new agency director. (Government photo)
U.S. Secret Service agents watch as Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks in a drizzle to board his campaign plane in Vandalia, Ohio, Tuesday, Oct. 30, 2012, as he travels to Tampa, Fla. for a campaign stop. (AP Photo/Charles Dharapak)
U.S. Secret Service agents hold open the door as President Obama steps out of his vehicle to board Air Force One at Andrews Air Force Base in suburban Washington on Monday, Dec. 10, 2012, as he traveled to Michigan to visit the Daimler Detroit Diesel plant in Redford. (AP Photo/Charles Dharapak)
U.S. Secret Service agents hold open the door as President Obama steps out of his vehicle to board Air Force One at Andrews Air Force Base, Md., on Dec. 10, 2012, as he travels to Michigan to visit the Daimler Detroit Diesel plant in Redford, Mich. (Associated Press)
U.S. Secret Service agents stands watch as Republican presidential candidate Mitt Romney addresses the U.S. Hispanic Chamber of Commerce in Los Angeles on Monday, Sept. 17, 2012. (AP Photo/Charles Dharapak)
Accompanied by U.S. Secret Service agents, Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters as he campaigns at Integrity Windows in Roanoke, Va., Thursday, Nov. 1, 2012. (AP Photo/Charles Dharapak)
U.S. Secret Service agents watch as Republican presidential candidate, former Massachusetts Gov. Mitt Romney walks in a drizzle to board his campaign plane in Vandalia, Ohio, Tuesday, Oct. 30, 2012, as he travels to Tampa, Fla. for a campaign stop. (AP Photo/Charles Dharapak)
