Like the title says, how likely is this? I understand that the material conditions don’t really support it. Additionally, porky is just fine keeping manufacturing over-seas if it means more profit.
Obviously such a move would take decades and would be wrought with environmental havoc. But if not for profit, what if the US government sees it as strategically smart to wean it self from dependence on foreign manufacturing? What sorts of tricks could it pull to return manufacturing to the US?
I think at some point it has to, even if that point is "we ran out of bunker fuel for cargo ships". The current form of globalized economy will have to be discarded to save the earth, it's just way too inefficient sending things all over the place the way we do.