At Mirror of Justice, Robert Araujo uncovers a statement by President Kennedy:

Having said this, his remarks made as President at Boston College stand in contrast to his remarks to the Protestant ministers as candidate for President. In commenting on the recently released Papal Encyclical Pacem in Terris, the President said at Boston College: "As a Catholic, I am proud of it, and as an American I have learned from it." In his further remarks on the encyclical’s "penetrating analysis," the President continued by saying "that document surely shows that on the basis of one great faith and its tradition there can be developed counsel on public affairs that is of value to all men and women of good will." Maybe the wall of separation is porous after all…