Stephen Miller, the architect of President Trump's hardline immigration agenda, was elevated to White House chief of staff on Friday, replacing Susie Wiles. In brief remarks at Mar-a-Lago, Miller pledged his “absolute loyalty” to the president, calling the promotion “the honor of my life.”

“We need to stand with the man who has stood with us with every fiber of his being,” Miller said in a video posted to Truth Social. “I pledge you, Mr. President, my absolute loyalty, my unwavering commitment and my total devotion to your success and the success of this country.”

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The promotion came as a surprise, with Wiles stepping down after serving as chief of staff since Trump returned to office. Trump announced the change Friday morning, and Miller's ascension immediately drew sharp criticism from Democrats and even some Republicans who argued the president misread the midterm election results.

Senate Minority Leader Chuck Schumer (D-N.Y.) took to X to condemn the move, writing: “Donald Trump learned nothing from his historic defeat. Stephen Miller is the architect of the most barbaric, inhumane policies of this administration. Trump couldn’t have made a worse choice.” Schumer's comments echoed broader Democratic outrage over Miller's elevation.

Sen. Thom Tillis (R-N.C.) also urged Trump to “rethink” the decision, calling it a “colossal mistake” in the wake of the GOP's midterm losses. “This past Tuesday, Republicans lost because we lost the narrative on the border, a success that the president should have been heralding,” Tillis said. “Now we’re talking about putting one of the most partisan, polarizing figures, and not only polarizing in terms of Republicans and Democrats, but even among Republicans.” His remarks were part of a broader GOP backlash.

Miller has been a polarizing figure throughout Trump's presidency, particularly for his role in shaping mass deportation policies and his inflammatory rhetoric. He previously called two American citizens killed during federal immigration enforcement in Minneapolis “domestic terrorists,” drawing widespread condemnation.

Despite the criticism, Trump's cabinet secretaries largely praised the switch. Defense Secretary Pete Hegseth shared a photo of himself with Miller, captioning it “Stand. Fight. Defend the Republic.” The appointment brings Hegseth closer to the White House as he faces mounting scrutiny over his leadership and the ongoing Iran war. House Oversight Committee chair James Comer (R-Ky.) acknowledged, “There’s a lot of questions about Hegseth,” while Rep. Thomas Massie (R-Ky.) is renewing his push to impeach the defense secretary.

In his Friday night remarks, Miller praised the administration's defense and economic record, saying, “If it wasn’t for President Trump, the United States of America would not exist right now. This man saved America. He saved our military from collapse. He saved our economy from destruction. He saved our boarder from annihilation. And he saved our country from threats from home and abroad.”

The promotion signals a more combative White House as Trump navigates a divided Republican Party and prepares for potential policy battles. With Miller at the helm, the administration is likely to double down on its hardline immigration stance and confrontational approach, which could further alienate moderate voters and complicate legislative efforts.