The furor over what's called "the mosque" near Ground Zero centers on part of a $100 million project called Cordoba House. Opponents, including some high-profile Christian and Jewish groups, call it "insensitive" to the families of people who died on September 11. Elsewhere in the country, opposition to new mosques began with concerns about traffic and parking, but lately it's focused on the Muslim religion itself. Islam has been called a "cult" that encourages terrorist bombers and is accused of secret plans to bring Shariah law to America. That's raised concerns about the constitutional guarantee of religious freedom. Is a basic American principle at risk at a time of uncertainty over economics and immigration?