Yesterday my friend and fellow law professor, Dale Carpenter, published an op-ed that claimed religious liberty will be unharmed if we embrace same-sex marriage ("The rites and rights of marriage," May 9). The House of Representatives has now passed a new definition of marriage, and we will see how people of faith fare. Carpenter acknowledges that religious liberty is the first freedom mentioned in our Bill of Rights, but then suggests that our free-exercise rights are limited to a "right to worship." Instead, our federal and state constitutions guarantee the more robust free-exercise right -- the right of each American...