Right. Especially the bloody history of Islam.
The problem with your sentiment is the necessary intrusions to make it happen.
Sounds like the arguments coming from the pro-illegal lobby.
Once Islam is outlawed, and its practice moved underground, how are you going to discern who is practicing Islam in secret and who is not?
They will be expelled. Which is more kind than the horrors they visit upon others.
Once you ban the practice of any religion, the only way to make good on your proscription is to come down like a hammer on your citizenry
Which is why expulsion is an appropriate response.
Being in the country illegal is not comparable. I have a birth certificate that can easily be checked if there were truly a will to do so. How are you going to see into my heart to see who I truly pray to? You cannot. It's that simple.
They will be expelled. Which is more kind than the horrors they visit upon others.
There is no national registry of Islamic practitioners or believers which can consult to begin the expulsions. Before you can expel anyone, you must first discern who believes what, which has been my point all along. Even if you somehow did manage to expel them, new ones would come along. Not necessarily from without, but certainly a number from within.
Besides, where do you think you're going to be able to expel the non-immigrant muslims too?