The Black Robed Regiment was the name that the British placed on the courageous and patriotic American clergy during the Founding Era (a backhanded reference to the black robes they wore). Significantly, the British blamed the Black Regiment for American Independence, and rightfully so, for modern historians have documented that:
There is not a right asserted in the Declaration of Independence which had not been discussed by the New England clergy before 1763.
[Alice M. Baldwin, The New England Clergy and the American Revolution (New York: Frederick Ungar, 1958), p. 170.]
http://nationalblackroberegiment.com/original-black-robe-regiment/
They’d have to give up their 501(c)(3) status first.
Some do. I personally know two.