You could consider checking an encyclopaedia on the matter. I checked the English Wikipedia page on the matter for you. On the literal 2nd paragraph, they talk about second-generation immigrants.

My point is that you seem too stubborn to accept any use of the word apart from that of a dictionary. But I think we can all agree that language contains more than can fit in a dictionary. Therefore, you should acknowledge uses outside those found in a dictionary, like the use described in most encyclopaedias - I must image - on the matter.

Also I find your comment rude, which is just double annoying when you furthermore seem misinformed on the matter.

An immigrant and being thought of as an immigrant are different things. Law and how it is applied are not the same. If you live only by formal definition of words, you must be incredibly autistic.

If you don't realise the US is a country of immigrants, you don't even understand your own history - and certainly haven't read/understood the words written in The New Colossus. Fuck me, I'm not even from there and I understand your history better than you seem to be showing. I know the US education system is useless (except in teaching how to survive school shootings), but you're not exactly helping beat the stereotype.