I am familiar with some manufacturing and meat-processing facilities around here, and almost all of the people working on the lines are foreign-born.
These are jobs Americans won’t do?
When I was growing up in the ‘60’s and ‘70’s, these were exactly the kind of jobs some people in my neighborhood had, so at least those Americans would do those jobs.
The world has decided that it doesn’t need a middle class. Not even in the USA. Too much trouble. Just peasants and oligarchs. The Brazil model applies.
Similar hiring of foreigners in the high tech electronics and computer industry. Sometimes top graduates at highest- rated American universities right next door to the companies are not even allowed interviews.