I've previously looked (very quickly, and I know it's Wikipedia!) and it turns out that America, as a nation, has no official language. Seriously.
Not even English. Some states have made it the official language, but many others haven't. I used to fall into the same boat with the "if they're going to live here, they should speak our language" people, but being in a place where almost no one speaks English has been eye opening, and so has learning another language.
I guess I'm just writing this one to make a few more people aware because I think a lot of the reason Americans are so monolingual is the attitude. Heck, maybe allowing citizens who don't speak English would actually be a good way to encourage bilingualism, but I sure am not a politician. Just a thought. Have a great weekend everyone!