Reviewing Religious Liberty and the American Founding, by Vincent Phillip Muñoz, Thomas Kidd writes:
People involved in American political life in the late 1700s disagreed vehemently about the proper approach to church-state separation. But Muñoz shows that there was near-universal agreement among people of widely differing faiths and ideologies on religious liberty as an inalienable natural right. A “natural” right was one not granted by government or by any human authority. Such rights were part of the natural order; they resulted from principles derived from “the laws of nature and nature’s God,” as the Declaration of Independence put it. These rights were “inherent” in the sense that they inhered in human nature, and all people rightfully enjoyed them. . . .
In one of his more controversial conclusions, Muñoz insists that there is little evidence that the Founders would have believed that “free exercise” must allow conscience exemptions from otherwise constitutional laws. He puts a great deal of emphasis on the fact that debates over exemptions (or replacements, to be more precise) from militia service for Quakers and other pacifists almost never cited the requirement of protecting free exercise of religion.
This is a worthwhile observation. But I wish that Muñoz had given more space to the Constitution’s own religious “exemption”: that of allowing people to “affirm” rather than swear to support the Constitution. This was an accommodation of Quakers’ scruples and those of anyone who literally applied the Bible’s injunction against swearing oaths. The existence of this alternative for conscience, within the Constitution itself, suggests that the Founders believed the government should not unduly burden or violate people’s religious conscience in crafting civil laws or even in framing the Constitution. Exemptions or alternatives were a familiar option among the Founders as paths to avoid this classic dilemma.
More about: American founding, First Amendment, Religious Freedom