They assert, in other words, that "prohibiting the free exercise [of religion]" includes requiring any individual to observe a generally applicable law that requires (or forbids) the performance of an act that his religious belief forbids (or requires). As a textual matter, we do not think the words must be given that meaning. It is no more necessary to regard the collection of a general tax, for example, as "prohibiting the free exercise [of religion]" by those citizens who believe support of organized government to be sinful than it is to regard the same tax as "abridging the freedom . . . of the press" of those publishing companies that must pay the tax as a condition of staying in business. It is a permissible reading of the text, in the one case as in the other, to say that, if prohibiting the exercise of religion (or burdening the activity of printing) is not the object of the tax, but merely the incidental effect of a generally applicable and otherwise valid provision, the First Amendment has not been offended.
... We have never held that an individual's religious beliefs excuse him from compliance with an otherwise valid law prohibiting conduct that the State is free to regulate. On the contrary, the record of more than a century of our free exercise jurisprudence contradicts that proposition
-- Justice Scalia, Employment Division, Department of Human Resources of Oregon v. Smith (No. 88-1213), Decided: April 17, 1990