The Constitution of the U.S. forbids everything like an establishment of a national religion.
James MadisonBecause the bill vests in the said incorporated church an authority to provide for the support of the poor and the education of poor children of the same, an authority which, being altogether superfluous if the provision is to be the result of pious charity, would be a precedent for giving to religious societies as such a legal agency in carrying into effect a public and civil duty.
James MadisonThe powers delegated by the proposed Constitution to the federal government are few and defined. Those which are to remain in the State governments are numerous and indefinite. The former will be exercised principally on external objects, as war, peace, negotiation and foreign commerce. ... The powers reserved to the several States will extend to all the objects which in the ordinary course of affairs, concern the lives and liberties, and properties of the people, and the internal order, improvement and prosperity of the State.
James MadisonThe citizens of the United States have peculiar motives to support the energy of their constitutional charters.
James Madison