 He was Assistant Secretary of State for Public Affairs from 1953 to 1957.From 1923 to 1949, McCardle was a reporter and correspondent for multiple news agencies including the "Moundsville Echo" (West Virginia), the "Washington Observer" (Pennsylvania), and the Philadelphia Bulletin (Pennsylvania).From Jan 29, 1953 to Jan 30, 1957, McCardle was Assistant Secretary of State for Public Affairs.