The very politically incorrect joke goes, "The Easter Bunny, Santa Clause, George Bush, and a moderate Muslim are standing on four corners of a road with a ten dollar bill in the middle. Who got the ten dollar bill? George Bush of course. The other three are fairy tale characters."
The problem we face at the Mosque and elsewhere is not one of moderate Islam versus an extreme or perverted version. The problem is with the fundamental nature of Islam itself. Read the Koran, listen to the Imams. One need not be selective in the passages he chooses, just try to understand what the Koran is commanding the faithful to do. For anyone who still has doubts after that, play back the tape of millions of wildly cheering Muslims from Cairo to London after the 9/11 attacks.
The US is a Christian nation. No, you don't have to be Christian to be a citizen, but we are a nation of laws, and our laws are derived from natural law and are consistent with Christian teachings. Simply put, laws are born of values, and in the US that means Christian values. Most faiths share these values, and thus practicing them presents no problem. However, Islam and Sharia law are different. They are inconsistent with those values, inconsistent with our laws, and therefore Islam should be treated like any outlaw organization that sets itself above our law.
Why are we obliged to accept the presence of Sharia and Islamic laws or values anywhere in our society if adherence to them demands the violation of our laws? Must we accept this simply because they arrive under the banner of religion? Is not freedom of speech a basic right for all Americans, even Muslim women? Sharia says no. Are those women chattel? Should all religions be subordinated to Islam (if tolerated at all) in civil society? Should we not prosecute honor killings? Do we want legal sanctions, as Sharia has, for violating dietary laws (Michael Bloomberg, the trans fat Mayor of NY not withstanding). You get the point.
Foreign law has no standing in the US (exception of Ruth Bader Ginsberg noted), and neither does religious law. We should use every means possible to eradicate illegal and often treasonous teachings from all sources which require the breach of our law. There is nothing inconsistent with following Christianity (or Judaism, or Buddhism, or Scientology), and following American law. But there is a huge conflict between following Islam and following US law. If we are to remain a nation where the law, our law, continues to reign supreme, it is not only our right but our obligation to fight against any person or organization that would undermine them.