Ah, I see what you're saying, but I disagree with you. A lot of the kinds of manufacturing that was shipped to Mexico was the kind that couldn't easily be automated or demands in some way some form of manual labor. Some manufacturing processes are simply too complex to currently be done by machine, from what I understand. If we bring manufacturing back, those jobs would likely end up in smaller cities where the cost of living is lower so they could save money, thus driving up wages in the exact kind of areas that have been hurting.

Would it be a net positive with regards to wealth generation? Absolutely not. There are massive capital flow optimizations available with globalization. I just don't see any other way of increasing quality of life for our lower class in a way that's politically attainable.