Why would anyone want to go back to an economy that can be run by a third worlders? What is our competitive advantage then?
Economics works when the people do the things they are most efficient at. If a person in China can make iPhones for cheaper than an American, LET THEM. Our citizens should be designing them instead, because that's what we train our citizens to do.
Trump and the Republicans really do think of our citizens as third worlders performing manual labor like we were oxen.