Education funding per pupil has steadily increased year after year. Maybe we should spend even more, but our problems with bad educational outcomes are mostly due to other factors rather than a lack of money.
Automation has done more to remove manufacturing jobs than offshore by a significant margin. 50-70% of job loss and wage reduction can be attributed to automation.
Even if we bring back all the manufacturing jobs we've lost, they represent fewer positions and automation will continue to be a downward force on wages.
We’ve offshored manufacturing, cut funding for education, have failed to invest in infrastructure.