I think each nation[0] should be entitled to make decisions for themselves and have a right to run their state the way they see fit. I wouldn't presume to move to, say, Japan and then start telling them that they're doing things wrong.
I don't think this is too hard to imagine applying to a person living long term in Japan and definitely not hard to imagine in the US, where there are no true "Americans" in the first place, apart from maybe the indigenous peoples.
For the purposes of this debate, "Americans" means citizens and those that can vote, the ones to whom the government answers.
Why can't we discuss the legitimacy of the government?