Although the Supreme Court has stated that the framers of the Constitution erected a wall of separation between church and state, history shows that collective political activity in the United States has been and remains an intensely religious enterprise. Despite seemingly clear agreement on the principle of separation, what that principle entails in controversies involving not only the activities and demands of religious groups but the Court itself has proved contentious. Professor Bradley's book is the most comprehensive analysis of the subject attempted to date. It offers a detailed exploration of the historical meaning of the Establishment Clause of the United States Constitution and church-state relations from the founding period down to the controversies that are a feature of our modern political life.