The First Amendment of the U. S. Constitution begins: "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof . . . ." The Supreme Court has consistently held that these words, usually called the "religion clauses," were meant to prohibit laws that violate religious freedom or equality. In recent years, however, a growing number of constitutional law and history scholars have contended that the religion clauses were not intended to protect religious freedom, but to reserve the states' rights to legislate on. If the states' rights...