Laurence Henry Tribe (born October 10, 1941) is a professor of constitutional law at Harvard Law School and the Carl M. Loeb University Professor at Harvard University. He also works with the firm Massey & Gail LLP on a variety of matters.Tribe is a liberal scholar of constitutional law and cofounder of American Constitution Society. He is the author of American Constitutional Law (1978), a major treatise in that field, and has argued before the United States Supreme Court 36 times.