Parker was elected as a Republican to the Sixty-third and to the ten succeeding Congresses, holding office from March 4, 1913, until his death on December 19, 1933. While in the House, he was Chairman of the Committee on Interstate and Foreign Commerce during the Sixty-ninth through Seventy-first Congresses.
He and Senator Charles McNary of Oregon introduced a bill in 1930 to give mail contract subsidies for transoceanic trip to American dirigibles.[1]
He was married twice: first in 1899 to Marian Williams, who died in 1923; second to Amy Glidden, two years after his first wife's death. He had no children.[1] He died on December 19, 1933, in Washington, D.C., and was buried at the Evergreen Cemetery in Salem, NY.