Racists say that the US collapse is solely because of illegal immigrants, but Hong Kong and the USA have been successful while having mudshits, immigration, and free trade.

https://www.worldatlas.com/articles/top-50-countries-on-the-open-border-index.html

https://www.fm-magazine.com/news/2014/apr/20149992.html

North Korea has closed borders and they are poor.

https://www.migrationpolicy.org/article/north-korea-understanding-migration-and-closed-country/

What if illegal immigrants paid sales taxes that funded welfare for Americans?