We may have made things so bad immigrants don't even want to come anymore. It'll take some time for this truth to become public knowledge but if it gets to a point that we've degraded the country so bad that it's worse for immigrants coming over that might be a good thing. Perhaps we've hit a turning point and the elite won't be able to use slave labour from immigrants as readily.
Edit - Whoops I meant vietnamese not taiwanese but rrrr rook same, my bad.
That has been happening for years. I had students that had college degrees, including phds, and thy were at the top of their societies before they came to the U.S. to pursue their dreams. They ended up working at gas stations, etc.