At the state and national level, Fowler had been a member of the National Advisory Committee on Alcoholism of the Department of Health, Education and Welfare. He was a task force member of the President's Commission on Mental Health and was an invited participant to the White House Conference on Health and the National Conference on Criminal Justice Standards and Goals. He had been a consultant to the Director of the Law Enforcement Assistance Administration, the Veterans Administration, and the National Institute of Alcohol Abuse and Alcoholism. From 1965 to 1968 he was vice-president of the Council on Human Relations, the first biracial human rights group in Alabama.