But isn't that the real crux of the matter? Americans?
Are they really Americans? Can they be Americans?
Were they ever really Americans?
Is that why they came to America -- to be Americans?
I don't think so.
They can not swear allegiance to the Constitution therefore no they are not, nor can they ever be, Americans.
I remember stories of Muslim FBI agents refusing to investigate Muslims after 911. No clue if that is true but those stories were around. They are believable because it fits their stated belief.