Justice Antonin Scalia, writing for the majority, observed that the Court has never held that an individual’s religious beliefs excuse him from compliance with an otherwise valid law prohibiting conduct that government is free to regulate. Allowing exceptions to every state law or regulation affecting religion “would open the prospect of constitutionally required exemptions from civic
obligations of almost every conceivable kind.” Scalia cited as examples
compulsory military service, payment of taxes, vaccination requirements,
and child-neglect laws.
The case is Employment Division v. Smith – 1989
In other words, that Oregon Baker, the New Mexico Photographer, that Washington Florist and all the rest who think that they deserve special rights to discriminate based on religion can stick it where the sun doesn’t shine!