You're right, there are 7 million Muslims in the USA.
However, seen in the context of our simultaneous illegal immigrant 'problem' of 20 to 35 million of THEM, it seems less daunding and, indeed, MORE doable.
Deporting practicalities would trump ideology. For example, involuntary deportations could be focused on the young males only, considerably cutting the cohort of forced emmigrants. Further, these people could be given the opportunity to either convert to another religion or none or they can be 'encouraged' to make a choice. More specificly, they can be offered the opportunity to declare that their Sharia Law applies to their intranecin issues only and that they agree to honor and respect the primacy of U.S. Federal, State, and Local Law over their secular lives permanently just like all other U.S. Citizens do, or should. Recognized exceptions related to morality such as Conscientious Objection would be honored.
This would effectively be a 'schism' within Islam, a significant departure from a formerly accepted doctrine. Specificly, their Koran would be purged of all the controversial content and all other Korans declared defunct.
Doubtless there would be screaming, whining, and moaning. That's OK. THOSE people can just leave.
WOULD this be done? Not with the current political 'leadership' we 'enjoy' in Washington today.
COULD this be done? Of course! I lived in Saudi Arabia for years. In that sad country, as you may know, no other belief systems are allowed, period. The entire native population is Muslim, period. You accept Islam - or you DIE, period. No opportunity to emmigrate is offered. Yet, these people are honored, favored, and even have their hands held by our own 'leaders' such as Pres. Bush.
One thing for sure. The Brits are in deeper poop right now and need to make a serious decision soon.
I think the first thing any red blooded American should do is discriminate against islam all they can. For instance all American owned businesses should have the old standard sign “WE RESERVE THE RIGHT TO REFUSE SERVICE TO ANYONE” then goods, products and services could be refused to all that appear to be muslim or islamic. I think this would be a start in the right direction at least. In a perfect if EVERYONE did this they would not be able to function in our country.
Just my views.