 He engaged as a traveling salesman in Tallahassee, Florida from 1906 to 1927.He served as delegate to the 1920 Democratic National Convention.Yon was elected as a Democrat to the United States House of Representatives in the 1926 elections, and was twice re-elected, serving from March 4, 1927 to March 4, 1933, in the 70th, 71st, and 72nd Congresses.