He was
admitted to the bar on March 14, 1935, and commenced the practice of law in
Pueblo, Colorado. He was an investigator in district attorney's office in Pueblo in 1935 and 1936.
Political career Marsalis was elected district attorney, tenth judicial district of Colorado, in 1944 and took oath of office while on furlough on January 9, 1945. He assumed his duties upon release from Army and served until December 1948. Marsalis was elected as a
Democrat to the
81st Congress (January 3, 1949 – January 3, 1951). He was an unsuccessful candidate for reelection in 1950 to the
82nd Congress and for election in 1952 to the
83rd Congress. He was appointed city attorney on December 15, 1952, and served in that capacity until elected district judge, tenth judicial district of Colorado, in November 1954. He served in that office until his retirement on February 28, 1962. == Personal life ==