He was in private practice in Parkersburg, West Virginia, 1920 to 1923, thereafter serving as both an Assistant United States Attorney and as a divorce commissioner for the Wood County Circuit Court of West Virginia from 1923 to 1927, before returning to private practice until 1929.

[1] Boreman ran for Governor of West Virginia in 1948, as a Republican but lost to Democrat Okey L. Patteson, receiving just under 43% of the vote.

[2] Boreman was nominated by President Dwight D. Eisenhower on June 22, 1954, to a seat on the United States District Court for the Northern District of West Virginia vacated by Judge William E. Baker.

His service terminated on June 22, 1959, due to his elevation to the Fourth Circuit.

Boreman was nominated by President Eisenhower on January 20, 1959, to a seat on the United States Court of Appeals for the Fourth Circuit vacated by Judge John J. Parker.