Here is the Wikipedia article for the Supreme Court case I talked about with regard to Mormonism and plural marriage in Gayish: 016 Mormon (w/ Derek Flora).
Gosh, does any of it sound familiar? It’s from 1878. Religion does not permit a citizen to “become a law unto himself”. (From https://en.wikipedia.org/wiki/Reynolds_v._United_States)
“The court considered that if polygamy was allowed, someone might eventually argue that human sacrifice was a necessary part of their religion, and ‘to permit this would be to make the professed doctrines of religious belief superior to the law of the land, and in effect to permit every citizen to become a law unto himself.’ The Court believed the First Amendment forbade Congress from legislating against opinion, but allowed it to legislate against action”