And yet, Scalia's past jurisprudence stands contradictory to the argument for striking down the Obamacare rule in question, which requires for-profit employers' insurance plans to cover contraceptives (like Plan B, Ella and intrauterine devices) for female employees without co-pays.

In 1990, Scalia wrote the majority opinion in Employment Division v. Smith, concluding that the First Amendment "does not require" the government to grant "religious exemptions" from generally applicable laws or civic obligations. The case was brought by two men in Oregon who sued the state for denying them unemployment benefits after they were fired from their jobs for ingesting peyote, which they said they did because of their Native American religious beliefs.