When people talk about assimilation of immigrants, I think of two things:
- examples of immigrants to America who have not "assimilated", at least if defined as speaking English and abandoning their language of origin: the Pennsylvania "Dutch", aka Amish and some related communities, and some Hasidic Jewish communities, along with Native American tribes, Cajuns (I think), etc.
- Switzerland. A long time democracy with at least 3 definite language communities.
So my message is relax: have faith in American soft power and its ability slowly to permeate the norms of people living here, as well as those living elsewhere.