More than 100 Foreign and Civil Service personnel work at the US Mission to the United Nations. Learn more about the Ambassadors who lead us in carrying out the priorities of the United States at the United Nations., Ambassador Dorothy Shea defended the U.S. strikes on Iran at Sunday's U.N. Security Council meeting, saying that "the time finally came for the United States, in the defense of its ally and in the , President Trump is tapping national security adviser Mike Waltz to be his ambassador to the United Nations following reports of his ouster in the midst of a controversy over a group text chat., President Donald Trump named Rep. Elise Stefanik as the next US Ambassador to the United Nations, marking a shift in America’s diplomatic stance. “Elise is an incredibly strong, tough, and smart America First fighter,” Trump said, announcing the nomination., The United States Ambassador to the United Nations is the leader of the delegation of the United States, the U.S. Mission to the United Nations. Ambassadors that served in political positions include Adlai Stevenson, George H.W. Bush, Jeane Kirkpatrick, Madeleine Albright, John R. Bolton, Susan Rice and Nikki Haley., NEW YORK (AP) — President-elect Donald Trump has chosen Rep. Elise Stefanik to serve as his ambassador to the United Nations, picking a loyal ally with little foreign policy experience to represent the U.S. at the international organization..