The 1965 Voting Rights Act did away with literacy tests and other voter registration tests. After passage of this law, the gap between white and black registration rates in the South disappeared almost immediately.
The religious freedom clause in the First Amendment that denies government the ability to prohibit the free exercise of religion. Debate over the clause has largely focused on whether government laws can force adherents of a certain religion to engage in activities that are prohibited by their religious beliefs or prevent them from performing atcs that are compelled by their relgious beliefs