WASHINGTON >> President Donald Trump announced Thursday that he was pulling Rep. Elise Stefanik’s nomination to be U.S. ambassador to the United Nations, a stunning turnaround for his Cabinet pick after her confirmation had been stalled over concerns about Republicans’ tight margins in the House.

Trump confirmed he was withdrawing the nomination on Truth Social, saying that it was “essential that we maintain EVERY Republican Seat in Congress.”

“We must be unified to accomplish our Mission, and Elise Stefanik has been a vital part of our efforts from the very beginning. I have asked Elise, as one of my biggest Allies, to remain in Congress,” the president said. He did not say whom he would nominate to replace her and fill his last remaining Cabinet seat.

The withdrawal reflects concern among House Republicans, led by Speaker Mike Johnson, that their historically slim majority could be at risk, particularly ahead of two special elections in Florida next week. The loss of a handful of seats could swing the House majority to Democrats and derail their efforts to enact Trump’s agenda in the months ahead.

Trump had tapped Stefanik to represent the U.S. at the international body shortly after winning reelection in November. She was seen as among the least controversial Cabinet picks, and her nomination advanced out of committee in late January, but House Republicans’ razor-thin majority kept her ultimate confirmation in a state of purgatory for the last several months.