Let's assume that Imam Feisal Abdul Rauf is a bad guy with a really disgusting world view; let's assume he hates the US & hates Christians & Jews.
If he's broken any law let's arrest him for it. But, unless he's broken a law, we should leave him alone (although with reasonable suspicion, he might be ?monitored? by ?the authorities.?)
One of the great things about our country (as opposed to, say, Saudi Arabia) is that each of us is free to have any cockamamie opinion or worldview we want?and we're allowed to voice those opinions in front of God & everyone without fear of being arrested or killed. For proof of this just read the SoWal political forum.
If the First Amendment only protects ?nice? speech it's not worth much. The First Amendment shows its worth & power when it protects objectionable speech.
Unless & until the Muslims who want to build the mosque break a law, they should have all the rights & privileges of their citizenship. If they are American citizens, they should be treated like their fellow citizens.