One of the leaders of the proposed Islamic center and mosque two blocks from ground zero in New York says it's too late to back out now. "There is too much at stake," said Daisy Khan, who, with her husband, Imam Feisal Abdul Rauf, is leading the project. "Constitutional rights, the development of the Muslims here, how the world is watching the United States. We tell people America upholds religious freedom. We should not compromise those values." Khan spoke to Sally Quinn of the Washington Post, who quoted her in a blog post. "We have to convince people that not...