In 1858 and 1859, French served as a member of the
Ohio House of Representatives. In 1861, he was appointed by Secretary
Salmon P. Chase to a clerkship in the
Treasury Department in
Washington, D.C. French was appointed by President
Abraham Lincoln as a member of the board of direct-tax commissioners for the State of
North Carolina. He settled in
Edenton, North Carolina at the close of the
Civil War. In 1867, he served as a Delegate to the State constitutional convention. Upon the readmission of the State of North Carolina to representation following the Civil War, French was elected as a
Republican to the
Fortieth Congress, serving from July 6, 1868 to March 3, 1869. He was not a candidate for renomination in 1868. He was elected Sergeant at Arms of the United States Senate on March 22, 1869 and served in that capacity until March 24, 1879. French was appointed secretary and disbursing office of the
Ute Commission in July 1880, whereupon he returned to
Washington, D.C. In his later years, French moved to
Omaha, Nebraska, and then to
Boise City, Idaho, where he was editor of the
Boise City Sun until his death. He is interred in Boise City Cemetery. ==Personal life==