On Friday night, Barack Obama gave his full-throated endorsement to a mosque and "cultural center" on private property that has been purchased in Lower Manhattan adjacent to the site where the World Trade Center's twin towers once stood. By Saturday, however, he wanted the American people to know that he was not commenting on "the wisdom" of putting such a mosque by that hallowed ground - just "the right" of its backers like Imam Feisal Abdul Rauf to do it, pursuant to the Constitution's protection of religious freedom.