Factories would be built here? I missed something, I think.
Factories mostly aren’t built here because American labor is expensive relative to -for example- Bangladeshi labor. Or Chinese labor. So they move production over there. It really has very little to do with taxes.
I was reading (maybe a year ago?) that what factories are coming back are automated. Evidently, automation is cheaper even than Chinese labor. So the factories come back, but employ very few people. It’s just machines running 24/7/365, with no bathroom breaks, or paid vacation, or anything pesky humans demand.