Elected as a Democrat to the Seventy-second and to the six succeeding Congresses, Disney served from March 4, 1931 to January 3, 1945. He was on the Banking and Currency Committee as well as the Ways and Means Committee, making him known as "watchdog of the Treasury". Not a candidate for renomination in 1944, he was an unsuccessful candidate for the Democratic nomination for United States Senator. He continued to practice law in Washington, D.C., and Tulsa, Oklahoma, and was also a successful lobbyist.