The position is more formally known as the "Permanent Representative of the United States of America to the United Nations, with the rank and status of Ambassador Extraordinary and Plenipotentiary, and Representative of the United States of America in the Security Council of the United Nations"; it is also known as the U.S. Permanent Representative to the United Nations. There is also a deputy ambassador who assumes the duties of the ambassador in his or her absence. Like all United States ambassadors, the ambassador to the UN and the deputy ambassador are nominated by the U.S. president and confirmed by the Senate.