The Senate on Friday confirmed Mike Waltz, the former White House national security adviser, to serve as the U.S. ambassador to the United Nations. Waltz will likely be able to participate in next week’s U.N. General Assembly in New York City. Three Democrats—Mark Kelly of Arizona, Jeanne Shaheen of New Hampshire, and John Fetterman of Pennsylvania—voted to confirm Waltz. Sen. Rand Paul (R-KY) was the lone Republican to vote against Waltz’s nomination.

Republican Senate leadership did not bring to a vote Waltz’s separate nomination to be the U.S. representative to the General Assembly. It is unclear what effect that decision will have—if any—on Waltz’s ability to execute his role while the Senate is in recess next week. The confirmation process faced delays as Waltz’s nomination was returned to committee, along with those of other Trump ambassadorial picks, after Democrats protested that the Senate Foreign Relations Committee advanced his nomination in violation of Senate rules.

Trump administration allies, including Trump strategist Jason Miller, urged Senate leadership to move forward with the confirmation of Waltz and other top foreign policy and national security aides ahead of the U.N. General Assembly. “THANK YOU President Trump & the U.S. Senate for your trust and confidence to Make the UN Great Again,” Waltz said.

Trump announced in May that he was nominating Waltz, 51, to the diplomatic job after serving as his White House national security adviser since the president was sworn into office in January. Waltz had been on thin ice with Trump since March, when he admitted to accidentally adding a journalist to a private thread on the messaging app Signal with other top national security officials to discuss military strikes in Yemen.

At his Senate confirmation hearing earlier this summer, Waltz stressed the need for reform at the U.N., including a desire to review U.S. funding and root out antisemitism in the institution. Before joining the Trump White House, Waltz served in the House from 2019 to 2025. The president had originally nominated Rep. Elise Stefanik, R-N.Y., to serve as ambassador to the U.N., but he ultimately withdrew her from the process in March. Trump cited his concern that Stefanik’s departure from the House would make it even more difficult to pass his agenda with the GOP’s already slim majority.

Waltz will take over from career Ambassador Dorothy Shea, who has held the seat in an acting capacity since the start of the second Trump administration.