President Donald Trump announced Friday, Nov. 6, 2026, on Truth Social that Stephen Miller will become White House chief of staff starting Monday, Nov. 9, 2026, replacing Susie Wiles.

Miller, 41, currently serves as deputy chief of staff for policy and homeland security adviser. He has been a top aide to Trump since 2015 and was a central architect of the administration’s immigration agenda.

Trump wrote that Miller is “one of my most trusted advisors” and said: “Stephen has been with me from the beginning… He gets it; very good politically.”

Miller posted on X: “It has been the privilege of my lifetime to have served on his team from Day One, and I am honored beyond words to serve as his White House Chief of Staff.”

Wiles, 69, moves to the Trump Political Operation. Trump thanked her, saying she “has done an outstanding job.” Wiles confirmed Friday was her last day as chief of staff and had submitted her resignation Thursday evening, according to sources familiar with the matter.

Wiles was the first woman in U.S. history to serve as White House chief of staff, having worked on Trump’s three campaigns. She was diagnosed with early-stage breast cancer in March 2026 and stayed in her role while starting treatment.

The announcement came three days after the midterm elections in which Republicans lost control of both the House and Senate.

Senate Democratic Leader Chuck Schumer said, “Trump has learned nothing from his historic defeat.” Wiles had come under criticism from some MAGA allies, including former chief strategist Steve Bannon, after the midterm losses.

Stephen Miller in 2025. Credit: Wikimedia Commons

Sources: USA Today and CNN.