Gordon Gamm has represented most of the major humanist organizations in the United States: the American Humanist Association, Center for Inquiry, Society for Humanistic Judaism, American Ethical Union and humanists in the Unitarian Universalist Association. He has also explained humanism to state and federal courts, including the U.S. Supreme Court. And he has served as a board member of the AHA and is one of the founders of the Humanist Legal Society.