I don't think forcible assimilation is acceptable. Certainly the government might reasonably encourage some sorts of assimilation- like language. But I don't think the government should be telling a group of people that their cultural practices- religion, culinary and so on- are wrong.
Obviously, we can't force immigrants to change religions or prevent them from speaking their native language in certain contexts. That would be a human rights violation, and in the USA it would be unconstitutional anyway.
But how far should we take the issue of allowing them to keep their own culture? Are we to start making exceptions in our own laws for things like domestic violence (which is acceptable in some cultures)? Should we legalize or refrain from prosecuting things like bride burning, acid throwing, and honor killings?
As far as I'm concerned, immigrants shouldn't be given a free pass on things that would be illegal in their destination countries just because those things might be acceptable in their home countries.
And BTW I have no problem with Zachski becoming a mod.