In addition to stripping the White House of another top official and one of the few senior advisers who has been willing to push back on Mr. Trump, Mr. McGahn’s departure may fuel concerns about how the president has interacted with witnesses and potential witnesses in the Russia investigation.
In his tweet Wednesday morning, Mr. Trump said Mr. McGahn would leave this fall after the Senate votes on the confirmation of Judge Brett M. Kavanaugh to fill the vacant seat on the Supreme Court, the culmination of a quiet but intensive effort he has directed to remake the federal courts by installing scores of conservative judges.
“I have worked with Don for a long time and truly appreciate his service!” Mr. Trump said in the Twitter post.
But the relationship between the president and Mr. McGahn has been rocky since he failed to stop the attorney general, Jeff Sessions, from recusing himself a year ago from the Justice Department’s investigation. At the time, Mr. Trump exploded at Mr. McGahn and said he needed an attorney general who would protect him.
The two men also clashed last June after Mr. Trump asked Mr. McGahn
to fire the special counsel, Robert S. Mueller III. Mr. Trump ultimately backed down after Mr. McGahn threatened to resign rather than carry out the president’s directive.
Mr. McGahn’s departure has been rumored for months, and he had told Mr. Trump earlier this year that he planned to step down soon but had not settled on a date. At the time, Mr. Trump told Mr. McGahn he was reluctant to let him go. But the two men have not discussed the matter recently.
The president’s tweet was precipitated by
a report on the Axios website that Mr. McGahn planned to leave after Mr. Kavanaugh’s confirmation process concluded. Mr. Trump had grown tired of seeing reports that Mr. McGahn might leave, according to people familiar with his thinking, and decided to take away any wiggle room he might have.
But Mr. McGahn, who had been a frequent target of Mr. Trump’s daughter, Ivanka Trump, and son-in-law, Jared Kushner, believed the story was planted by his critics to force the president’s hand and hasten the timeline of announcing his departure.
Ms. Trump complained bitterly to her father about The Times report this month, which detailed how some in the White House were unaware of the extent of Mr. McGahn’s cooperation with Mr. Mueller, according to a person briefed on the discussion.
On Wednesday afternoon at the White House, Mr. Trump praised Mr. McGahn and said he had nothing to fear about what his counsel had told Mr. Mueller, even as he appeared to confirm he was not completely aware what that was.
“I don’t have to be aware,” Mr. Trump said. “We do everything straight. We do everything by the book. And Don is an excellent guy.”
Mr. Trump and his White House counsel had already grown distant, with the president bristling at being advised not to take actions that could draw legal scrutiny, and Mr. McGahn becoming increasingly weary of serving a client who often refused to listen to legal reasoning. Mr. McGahn had taken to telling people that a day without a single summons to the Oval Office was a good day, and he preferred to spend as much time as possible in his upstairs corner office in the West Wing next to the presidential counselor Kellyanne Conway — like him a New Jersey native — which they called the “New Jersey corner.”
The loss of Mr. McGahn will further whittle down the list of people in the West Wing who are willing to say no to Mr. Trump. Within the White House, Mr. McGahn was seen as the protector of presidential institutions and as a guardrail who was willing to tell the president when he should not take certain actions. Mr. McGahn was not afraid to fight the president and had several epic screaming matches with him over the months he worked in the White House.
Mr. Trump often griped that he wanted to get rid of Mr. McGahn, but the president never seemed willing to follow through and dismiss him. The president asked Rob Porter, then the staff secretary, several times last year if he would be willing to take over for Mr. McGahn, including after John F. Kelly became the chief of staff in July 2017. Mr. Porter told the president he did not believe that he was qualified for the role, those briefed on the discussions said, and he has since
left the White Houseamid accusations of spousal abuse.
Mr. Trump often blamed Mr. McGahn for the cloud the special counsel’s investigation had cast over the White House. He said Mr. McGahn should have done more to stop Mr. Sessions from recusing himself from the investigation, the decision Mr. Trump believes allowed Mr. Mueller to be appointed in May 2017.
Still, despite his reputation for being brave enough to tell Mr. Trump no, there was one major event Mr. McGahn could not stop: the firing of the former F.B.I. director, James B. Comey. After failing to persuade Mr. Trump not to dismiss Mr. Comey, Mr. McGahn worked with Mr. Sessions and the deputy attorney general, Rod J. Rosenstein, to come up with a rationale for the dismissal. Eight days after Mr. Comey was fired, Mr. Mueller was appointed as the special counsel.
Mr. McGahn, who was the top lawyer for the Trump campaign, also forged a strong bond with Republican congressional leaders, who regarded him as a rare island of political sense in a sea of White House officials whom they viewed as overly dramatic and politically inept. He had considered resigning repeatedly, according to people who have spoken with him, but stayed on in part at the urging of Senator Mitch McConnell, the majority leader from Kentucky, and to execute
a strategy he spearheaded to appoint conservative judges. Mr. McGahn is also loyal to Mr. Trump’s chief of staff, Mr. Kelly.
Mr. McGahn had tried to lay the groundwork for his resignation, persuading Mr. Trump to hire Emmet T. Flood — who represented Bill Clinton in impeachment proceedings — as his lead White House lawyer dealing with the special counsel inquiry, to position Mr. Flood to then succeed him, according to people close to the discussions.
Still, some Republicans reacted to the news with alarm. Senator Charles E. Grassley of Iowa, the chairman of the Senate Judiciary Committee, said he was concerned about Mr. McGahn’s impending departure,
pleading with Mr. Trump on Twitter not to let him leave the White House.
But some members of conservative legal circles in which Mr. McGahn has worked suggested that he had grown frustrated with serving as the top lawyer in a White House that has drawn more than the usual share of legal scrutiny.
George T. Conway III, who withdrew last year as Mr. Trump’s choice for a top post in the Justice Department and is Ms. Conway’s husband,
responded to Mr. Grassley by tweeting, “remember the eighth amendment, senator.” It was a reference to the prohibition in the Constitution against cruel and unusual punishment.
Mr. McGahn was interviewed several times by Mr. Mueller’s investigators, disclosing to them several details about episodes like the abrupt firing in May 2017 of Mr. Comey.
The ousters of top Trump administration officials have brought the Russia investigation closer to the president in a variety of ways.
The firing of Mr. Comey prompted the appointment of Mr. Mueller. The firing of Michael T. Flynn, president’s first national security adviser, led to Mr. Flynn’s cooperation with the special counsel investigation. And the departure of Mr. Trump’s chief strategist, Stephen K. Bannon, left a rift between the two men just as
Mr. Bannon met with Mr. Mueller.
Mr. Trump
said recently that he was willing to speak with Mr. Mueller. But in June 2017, the president told Mr. McGahn that the special counsel had to be fired because he had several conflicts of interest, including a dispute years ago over membership fees at Mr. Trump’s golf club in Sterling, Va. Mr. Trump also said Mr. Mueller should be disqualified from leading the investigation because he had been interviewed to be the interim F.B.I. director the day before he was appointed special counsel.
The White House has long denied that the president ever considered firing Mr. Mueller.
But Mr. Trump has recently been
openly attacking the special counsel in an abrupt shift in tone. Mr. Trump had for the most part heeded the advice of his lawyers not to target Mr. Mueller’s team directly.