President Donald Trump said Friday that Stephen Miller will replace Susie Wiles as White House chief of staff, three days after Republicans lost control of both chambers of Congress in Tuesday’s midterm elections.

Trump announced the change in a post on Truth Social on Friday afternoon. The White House followed with a release naming Miller the 33rd White House chief of staff. Miller takes over Monday, Nov. 9.

What Trump said

“I am pleased to announce that Mr. Stephen Miller, the current Deputy Chief of Staff of the Trump Administration, and one of my most trusted advisors, will become the Chief of Staff starting Monday, November 9, 2026,” Trump wrote on Truth Social.

Of Wiles, Trump wrote that she had “done an outstanding job” and “will be moving over to the Trump Political Operation. I want to thank her for her service as Chief of Staff — She has done a great job!”

Speaking to reporters later Friday afternoon, Trump said, “Stephen’s been with me since the beginning. He gets it.” He also told reporters, “We’ve got to make some moves.”

In a “60 Minutes” interview taped before the announcement, Trump told CBS, “I love my Cabinet. I think they’re good, but I’ll do — be doing maybe a few changes.”

In mid-October, Trump said Wiles would “be there until the end.”

Why Wiles is leaving

Wiles submitted her resignation Thursday night, according to a White House official quoted by NBC News. She wrote on X that Friday would be her last day as chief of staff.

“Serving President Trump in the White House has been the honor of a lifetime. I’m so proud to have been a part of what we’ve accomplished together from securing our border and cutting taxes to strengthening our economy and putting America First,” Wiles wrote. “While my role may be changing, my commitment to the President and the mission never will.”

Axios, citing unnamed sources, reported that the departure was a mutual decision driven by Tuesday’s results, and that Trump began expressing discomfort on Wednesday with the scale of the losses and his political team’s spending. According to Axios, Wiles offered to quit for two days before resigning, and Trump accepted on Friday. One source who spoke with Wiles told Axios that Trump did not ask for her resignation.

Wiles, 69, was the first woman to serve as White House chief of staff and Trump’s longest-serving chief across his two terms.

Who Miller is

Miller, 41, has served as White House deputy chief of staff for policy and homeland security adviser. He joined Trump’s 2016 campaign as a speechwriter after working for then-Sen. Jeff Sessions of Alabama, and is a principal architect of the administration’s immigration enforcement policies.

On X, Miller thanked Wiles “for her years of devoted service to the President and the Country, and for her friendship.” He wrote, “The mission now is more clear than ever: Fight with all of our soul to support our President and defend this magnificent Republic.”

How lawmakers responded

Senate Minority Leader Chuck Schumer of New York, who is expected to lead the new Democratic majority, wrote on X: “Donald Trump learned nothing from his historic defeat. Stephen Miller is the architect of the most barbaric, inhumane policies of this administration. Our Democratic majorities will fight him every step of the way.”

House Minority Leader Hakeem Jeffries of New York, expected to become speaker in January, wrote on X: “Stephen Miller is a dangerous xenophobe and reckless extremist who has American blood on his hands. His presence in government should be eradicated like a malignant tumor. Fire him today.”

Among Republicans, Sen. Eric Schmitt of Missouri wrote on X, “Our country is at a pivotal point and Stephen Miller understands exactly what is at stake. He will be an outstanding Chief of Staff.” Rep. Paul Gosar of Arizona said, “The President made an outstanding choice!”

Steve Bannon, a former senior Trump adviser who had said after the election that Wiles should be fired, said of the new appointment: “Miller knows the key issues and is a true believer — and he knows the ecosystem around the issues.”

The midterm backdrop

In Tuesday’s elections, Democrats won control of both the House and the Senate. According to initial results from the NBC News Exit Poll, 57% of midterm voters said Trump’s immigration enforcement actions have gone too far, 23% said they have been about right and 21% said they have not gone far enough.

What comes next

Miller is scheduled to begin as chief of staff on Monday, Nov. 9, and the new Democratic-controlled Congress is sworn in in January.

Rep. Robert Garcia of California, expected to chair the House Oversight Committee, said, “Oversight Democrats will continue to investigate Miller for his misconduct,” adding, “Stephen Miller should lawyer up.”