Levi's, GAP, Tommy Hilfiger, Disney - these companies no longer make anything. They literally make nothing, they are just brands. Ideas.
Union, non-union, sweatshop - it doesn't matter. They've shut everything down. Their company is their brand name and they know it.
There is only one guarantee: those who make their goods will be the lowest bidder. If you want your country to make those goods, your living conditions need to be the worst in the world.