A White House contractor's email appears to have been hacked, leaking material ranging from Michelle Obama's passport to the number of stairs the Secret Service anticipated Joe Biden would be climbing during a trip to Cleveland. The emails were sent from the Gmail account of Ian Mellul, who is a contractor employed as an advance associate at the White House, and include correspondences with other White House employees as well as with Mellul's friends and professors. In one, the staffer references still being in college. A senior U.S. intelligence official called the hack "the most damaging compromise of the security...