The 'establishment of religion' clause of the First Amendment means at least this: Neither a state nor the Federal Government can set up a church. Ne… - Hugo Black

It is my belief that there are "absolutes" in our Bill of Rights, and that they were put there on purpose by men who knew what the words meant and meant their prohibitions to be "absolutes."

The proceedings of the original Constitutional Convention show beyond all doubt that the power to veto or negative state laws was denied Congress. On several occasions proposals were submitted to the convention to grant this power to Congress. These proposals were debated extensively and on every occasion when submitted for vote they were overwhelmingly rejected. The refusal to give Congress this extraordinary power to veto state laws was based on the belief that if such power resided in Congress the States would be helpless to function as effective governments. Since that time neither the Fifteenth Amendment nor any other Amendment to the Constitution has given the slightest indication of a purpose to grant Congress the power to veto state laws either by itself or its agents. Nor does any provision in the Constitution endow the federal courts with power to participate with state legislative bodies in determining what state policies shall be enacted into law.

That Amendment requires the state to be a neutral in its relations with groups of religious believers and nonbelievers; it does not require the state to be their adversary. State power is no more to be used so as to handicap religions than it is to favor them.