Following his admission to the Maryland State Bar, Rusk began practicing law in Baltimore. Rusk served in the
Maryland House of Delegates from 1876 to 1880. Subsequently, Rusk was elected and served in the
Maryland State Senate from 1882 to 1884. In 1884, Rusk served as a delegate to the
Democratic National Convention. Following the death of
William H. Cole, Rusk was elected as a
Democrat to the
U.S. House of Representatives for the
49th United States Congress. Rusk served for five subsequent terms. In the
52nd Congress and
53rd Congress, Rusk was chairman of the
Committee on Accounts. After declining to run for reelection in 1896, Rusk became chairman of the Democratic State central committee for Baltimore. Rusk served in this capacity from 1898 to 1908. Thereafter, Rusk resumed practicing law in Baltimore. ==Personal life==