Me, I'll continue doing what I want kthxbai.
The idea that the US is not a country that belongs to its citizens, but some sort of abstract global entity that everyone in the world is entitled to is farcical, and it's coming to an end. The US owes absolutely nothing to non-US people.
If people don't like it that can go anywhere else (keeping in mind that other Western countries are starting to do the same) or, you know, stay in their own country? (Crazy, I know)
The US is currently at a recent peak of approx 15% immigrants, much as it was in the 1860-1920 period.
This is less extreme than, say, Australia at 25% population born overseas.
Your "extreme" is commonplace.
Vietnam. Middle America. Afghanistan. Iraq. Greenland. Venezuela. Iran. Now Cuba.
Stop it.