“I consider the government of the United States as interdicted by
the Constitution from intermeddling with religious institutions,
their doctrines, discipline, or exercises. This results not
only from the provision that no law shall be made respecting the
establishment or free exercise of religion, but from that also
which reserves to the States the powers not delegated to the
United States. Certainly, no power to prescribe any religious
exercise or to assume authority in any religious discipline has
been delegated to the General Government. It must then rest with
the States.”
–Thomas Jefferson