Moss returned to private practice in Bowling Green from 1903 to 1909.[3] He was a judge of the Kentucky Circuit Court for the Eighth Judicial District from 1909 to 1921.[3] He worked in the Office of Alien Property Custodian from 1921 to 1922, as assistant general counsel from 1921 to 1922 and as general counsel in 1922.[3] He was Deputy Commissioner of the Bureau of Internal Revenue (now the Internal Revenue Service) in charge of estate and capital tax in the United States Department of the Treasury from 1922 to 1923.[3] He was an Assistant Secretary of the Treasury from 1923 to 1926.[3]
The United States Court of Claims : a history / pt. 1. The judges, 1855-1976 / by Marion T. Bennett / pt. 2. Origin, development, jurisdiction, 1855-1978 / W. Cowen, P. Nichols, M.T. Bennett. Washington, D.C.: Committee on the Bicentennial of Independence and the Constitution of the Judicial Conference of the United States. 1976.