https://fred.stlouisfed.org/series/MANEMP
Looking at the data, USA peaked at about 20 million in 1980. Today we are at about 13 million.
If we got manufacturing back. Where do these 7 million people come from?
We have an agriculture business that is having a difficult time finding people and many of those that are Americans are older and not far from retirement and need to be replaced. There best area for growth is immigrants.
Right now we have 7 million people unemployed and a 62% labor participation rate. Is that enough to fill those jobs?