John F. Kelly

The former chief of staff said earlier that he warned Trump against hiring a "yes man" because it would get him impeached.
The former White House chief of staff was instrumental in President Trump's immigration policy.
The retired four-star general and former White House chief of staff spoke Wednesday at Duke University.
The president previously said he had no role in securing the top-secret clearance for his son-in-law.
“Donald Trump has seemed to have learned all the wrong lessons from the first two years of his presidency,” said Chris Whipple, author of "The Gatekeepers."
The husband of Trump adviser Kellyanne Conway has a history of taking shots at the president.
Trump's outgoing chief of staff bashed the administration for not foreseeing blowback over the "zero-tolerance" immigration policy.
Current White House budget director Mick Mulvaney has been appointed acting chief of staff to President Donald Trump.
The White House budget director will replace John Kelly as the president’s right-hand man.
Kelly reportedly said being chief of staff was the "worst job" he's ever had.