High Quality Content by WIKIPEDIA articles! The United Nations Association of the United States of America or UNA-USA is a not-for-profit organization working to build support and understanding for the United Nations among the American public through advocacy, policy, humanitarian, educational, and membership initiatives. It has 135 community based chapters across the United States, and programs on 5 continents. The association is affiliated with the World Federation of United Nations Associations. The American Association for the United Nations, UNA-USA's predecessor organization, grew out of the League of Nations Association in 1943. A group of prominent citizens, including first Executive Director Clark Eichelberger, activated AAUN to promote acceptance of the Dumbarton Oaks proposals in the late years of World War II.