It's also the reason we only allow so many immigrants to enter the country per year. We want them to assimilate with US citizens instead if bringing their country with them. As Democrats created a porous border, we lost that goal. More and more of them pour into the country, don't learn the language, and then we are forced to accommodate them instead of the other way around.
Years ago it was an English only country. Today many government jobs that deal with these people have to be bilingual. Same goes with some teaching jobs. Ballots are printed out in several languages. We didn't have to do all that years ago.