There is another form of modern liberalism that defines freedom of conscience in purely personal terms. Only the individual and the state are real, at least when it comes to the law. And the state must often intervene to protect the individual from the oppression of illiberal social institutions, particularly religious ones.

This is the guiding philosophy of the American Civil Liberties Union. But as Yuval Levin, editor of National Affairs, pointed out to me, this approach has roots in the Anglo American tradition of political philosophy. John Locke’s “Letter Concerning Toleration” urges legal respect for individual conscience because “everyone is orthodox to himself.” But Locke offered no tolerance for the institution of the Catholic Church: “That Church can have no right to be tolerated by the magistrate which is constituted upon such a bottom that all those who enter into it do thereby ipso facto deliver themselves up to the protection and service of another prince.” In Locke’s view, Catholics can worship as they wish as individuals, but their institution is a danger to the liberal order.

In American history, the treatment of the Catholic Church has often been the measure of institutional religious tolerance. It is amazing how Lockean (unconsciously, one assumes) recent actions by the Obama administration have been. Catholics individuals are free to worship. Catholic institutions must be forced to reflect liberal ideals and values.