 After the war, he was engaged in the general contracting business in Waynesburg, PA, from 1919 to 1926, but then he returned to attend the United States Army Command and General Staff College in Fort Leavenworth, Kansas, in 1930.Faddis was elected as a Democrat to the Seventy-third and to the four succeeding Congresses and served from March 4, 1933, until his resignation on December 4, 1942, to enter the United States Army.He was an unsuccessful candidate for renomination in 1942.