Discrimination Against the Holder
"Discrimination against the holder of one faith means retaliatory discrimination against men of other faiths. The inevitable result of entering upon such a practise would be an abandonment of our real freedom of conscience and a reversion to the dreadful conditions of religious dissensions which in so many lands have proved fatal to true liberty, to true religion, and to all advance in civilization."
"To discriminate against a thoroughly upright citizen because he belongs to some particular church, or because, like Abraham Lincoln, he has not avowed his allegiance to any church, is an outrage against the liberty of conscience, which is one of the foundations of American life."
Roosevelt's letter on religious liberty.