He served as a member of the State constitutional convention in 1865.
He served as a member of the State house of representatives from 1866 to 1868.
Upon Mississippi's readmission to the Union, Morhpis was elected in Mississippi's 2nd congressional district as a Republican to the Forty-first and Forty-second Congresses and served from February 23, 1870, to March 3, 1873.
He was an unsuccessful candidate for renomination in 1872.
He was appointed by President Rutherford Hayes as United States Marshal of the Northern District of Mississippi, serving from 1877 to 1885.
Licensed as an Indian trader on the Osage Reservation in 1890 and engaged in that occupation until 1901. He lived in retirement until his death in Cleveland, Oklahoma, July 29, 1913. He was interred in Woodland Cemetery.