(Evan Vucci | AP file photo) Former White House Chief of Staff John Kelly, left, walks with former White House staff secretary Rob Porter to board Marine One on the South Lawn of the White House in Washington in 2017. The FBI first flagged “derogatory information” about Porter to White House counsel Don McGahn in March 2017. That’s according to a new timeline provided by the FBI to Congress and publicly released April 26, 2018.