He was part of the Free Thai Movement and was part of a delegation sent to the United States by Pridi Banomyong at the end of World War II. This delegation aimed to positively influence the United States in assisting Thailand with post-war reconstruction despite Thailand's support for Japan during the war. He addressed the United States House Committee on Foreign Affairs and sought assistance from Abbot Low Moffat who headed the South East Asian Affairs Division of the Department of State which helped improve Thailand–United States relations.
