<Tr> <Th> Website </Th> <Td> usun.state.gov </Td> </Tr> <P> The United States Ambassador to the United Nations is the leader of the U.S. delegation, the U.S. Mission to the United Nations . 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 . </P> <P> The U.S. Permanent Representative, currently Nikki Haley, is charged with representing the United States on the U.N. Security Council and during almost all plenary meetings of the General Assembly, except in the rare situation in which a more senior officer of the United States (such as the U.S. Secretary of State or the President of the United States) is present . Like all United States ambassadors, he or she must be nominated by the U.S. President and confirmed by the Senate . </P> <P> Many prominent U.S. politicians and diplomats have held the post, including Adlai Stevenson II, George H.W. Bush, Jeane Kirkpatrick, and Madeleine Albright . The Ambassador serves at the pleasure of the President of the United States, and is therefore appointed by the President . </P>

What does the ambassador of the united nations do