UPDATED: US Secret Service Chief, Kimberly Cheatle, resigns

US Secret Service Director Kimberly Cheatle resigned on Tuesday, a day after acknowledging that the agency failed in its mission to prevent an assassination attempt against Donald Trump. Cheatle was facing bipartisan calls to step down after a 20-year-old gunman wounded the former Republican president and current White House candidate at a July 13 campaign

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