Secret Service Director Julia Pierson is questioned by Rep. Trey Gowdy, R-S.C. on Capitol Hill in Washington, Tuesday, Sept. 30, 2014, as she testified before the House Oversight Committee in its examination of a security breach at the White House. The agency that protects the president and his family is under scrutiny after a man climbed over a fence, sprinted across the north lawn and dashed deep into the executive mansion before finally being subdued. (AP Photo/J. Scott Applewhite)
WASHINGTON — Secret Service Director Julia Pierson has resigned amid security lapses at the White House.