The US uses their convoluted visa process to blackmail foreigners into submission, dangles the American dream in front of immigrants, keeps Americans in debt, and filters all wealth (and thus, in a capitalist society, power) to the 1%.
This has always been a class problem. The people who are working to build a better America are not the people who make the decisions and they are not the people who have actual influence on America. Treating the working class as an unexceptional, unwanted “element of society” rather than it’s backbone was always going to have this effect.