He participated in the preliminary planning for the [[United Nations]] at the San Francisco Charter Conference of 1945, and in 1946 he was a member of the first U.S. delegation to the U.N. He then became an employee of the U.N. | He participated in the preliminary planning for the [[United Nations]] at the San Francisco Charter Conference of 1945, and in 1946 he was a member of the first U.S. delegation to the U.N. He then became an employee of the U.N. |