Washington State Passes Law Against the Seal of the Confessional

[Highlander]

Without regard to the Founders and their definition of "establishment", I think you make an interesting point. If the point, however, is based solely upon tax-exemption being a declaration of being part of the body of government, then I see a problem. If so, then all 501(c) organizations would be arms of the government. Actually, that mechanism worked in the Soviet Union, so it has promise in the US.