 He was also chairman of the board of Hill Top Recovery, an alcohol rehabilitation center, on the board of directors of the Montana Amateur Athletic Union, president of Montana Swimming, Inc., District Delegate for the Montana Officials Association, and a member of his parish council.In 1988, Warner was elected District Judge of the Montana 12th Judicial District, and he was re-elected in 1994 and 2000.While a judge, Warner also served as president of the Montana Judges Association, as chairman of the Montana Supreme Court's Sentence Review Division, and as chairman of the Montana Judicial Standards Commission.