Trump names Stephen Miller White House chief of staff

President Donald Trump has chosen Stephen Miller to replace Susie Wiles as White House chief of staff. The change was announced Friday and takes effect Monday, following an election in which Republicans lost control of both the House and Senate.

Miller has been one of Trump's longest-serving aides and a leading architect of his immigration crackdown. He moves up from deputy chief of staff into a role that oversees White House operations and helps coordinate the president's dealings with the rest of government.

Wiles submitted her resignation Thursday night, according to White House officials. Trump praised her work and said she would move to his political operation. She was the first woman to serve as White House chief of staff and had held the job throughout the opening part of his second term.

The appointment points to continuity in the president's policy agenda rather than a retreat after the midterm losses. Miller is closely associated with the administration's hard-line immigration policies, which Democrats have promised to investigate when their new congressional majorities take office.

Those incoming majorities will change the White House's relationship with Capitol Hill. Democrats will gain the ability to lead committees and compel testimony, while Trump will retain the presidency. Miller will be managing the White House during that confrontation, but the appointment itself does not change which party controls Congress or when the new lawmakers take office.