 He served in Mexico as consul-general; was U.S. Minister to Ecuador, Colombia and Uruguay; and U.S. ambassador to Panama and Uruguay during his long career.After retiring in 1946 he served as advisor on Latin American affairs to the U.S. delegation during the formation of the United Nations, went to Brazil on a special mission with General George Marshall and became the first U.S. ambassador to the Organization of American States.He died on 3 July 1972 at the Blue Hill Memorial Hospital, in Blue Hill, Maine.