Defenetly, Americans do not have to learn another language and undoubtedly all kinds of immigrants have to learn an American ( Language you speek is not
I have immigrated twice. First time from the former Soviet Union/Russia, the second time from Israel to the States. I have never been asked about my skills for immigration
I'd suggest you to reread Dalai Lama's saying, because what you're sayng is square opposite what Dalai Lame said. Are not you prejudiced, because that YOUNG and probably UNEXPERIENCED nurse thinks...