Don McGahn officially left his post as White House counsel on Wednesday, The New York Times reports, after he and President Trump had a “farewell chat.” Trump announced in an August tweet, reportedly to McGahn’s surprise, that McGahn would depart the White House after Brett Kavanaugh was confirmed to the Supreme Court. During his 21 months as counsel, McGahn reportedly stopped the president from firing special counsel Robert Mueller and forcing Attorney General Jeff Sessions to reverse his oversight recusal of the Russia probe. He also shepherded the nominations of Justice Neil Gorsuch and Justice Kavanaugh. The newspaper reports McGahn is also a witness in Mueller’s probe, spending at least 30 hours in interviews with Mueller’s investigators. Trump announced that lawyer Pat Cipollone will be McGahn’s successor.