Brent Walker, Executive Director of the Baptist Joint Committee, responded to Hamburger's claims noting; "The fact that the separation of church and state has been supported by some who exhibited an anti-Catholic animus or a secularist bent does not impugn the validity of the principle.
What does Walker feel does not impugn the validity of the principle of separation of church and state?
supported by some who exhibited an anti-Catholic animus or a secularist bent