Okay, as far as 'assimilation' goes then I agree that those who settle into the West abide by and respect the country's laws. Most do which has gotten lost with some of the far right here seeing extremists every time they see a turban or something. Add to that the crackpots who would destroy all mosques etc. Now if I'm reading you right, then you have no problem with Muslims in America provided they adopt the laws of the land and they can still worship as they see fit. If so there's not really much of a point of contention between us.
I work with a couple of peaceful muslims, that do not subscribe to, or identify with the radical sects which are causing all the problems across the globe so, in theory yes I agree with you. However if I was to see something like this in my country no...If they do not want to live peaceably alongside other westerners I say throw the ingrates out, send their sorry butts back to the barbaric, violent, throwback cultures they came from.