Neither a state nor the Federal Government can, openly or secretly, participate in the affairs of any religious organizations or groups and vice versa.
Neither can pass laws which aid one religion, aid all religions, or prefer one religion over another.
No tax in any amount, large or small, can be levied to support any religious activities or institutions, whatever they may be called, or whatever from they may adopt to teach or practice religion
Which btw, this was already voted on in 1980. A Kentucky classroom put up the 10 commandments. The supreme court said it violated the 1stA.