Secret Service Director Julia Pierson testifies on Capitol Hill in Washington, Sept. 30, 2014, before the House Oversight Committee as it examines details surrounding a security breach at the White House when a man climbed over a fence, sprinted across the north lawn and dash deep into the executive mansion before finally being subdued. (AP Photo/J. Scott Applewhite)
Secret Service Director Julia Pierson testifies on Capitol Hill in Washington, Sept. 30, 2014, before the House Oversight Committee as it examines details surrounding a security breach at the White House when a man climbed over a fence, sprinted across the north lawn and dash deep into the executive mansion before finally being subdued. (AP Photo/J. Scott Applewhite) AP
Secret Service Director Julia Pierson testifies on Capitol Hill in Washington, Sept. 30, 2014, before the House Oversight Committee as it examines details surrounding a security breach at the White House when a man climbed over a fence, sprinted across the north lawn and dash deep into the executive mansion before finally being subdued. (AP Photo/J. Scott Applewhite) AP

Secret Service chief on Capitol Hill hot seat over security breach

October 01, 2014 11:44 AM

UPDATED September 30, 2014 07:00 PM

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