For instance, what happens if Congress passes a law that requires any goods imported into the US to be made under conditions equal to those here? For instance, you have to have environmentally friendly factories, OSHA-approved lighting and safety, etc. etc.
If that happened, many people would put some of the production here to speed time to market, reduce shipping costs, and eliminate currency fluctuations.
So never say never.
I'm not saying America doesn't have a balance of trade problem, I just think people put too much faith in a resolution to that. This https://www.youtube.com/watch?v=pa5_tudyAF8 is what modern manufacturing looks like, note there aren't many people working there.
If we abandon capitalism, what alternative do you believe we should adopt instead?