I don't know if manufacturing even CAN be forced to return to the USA. However, a bit more of this kind of "trade war" talk, and many countries could start to leave China and move to other countries - other than the U.S. Spreading out Chinas' dominant position of manufacturing and exporting cheap goods would also be one huge way to take China down a notch or two in regards to the US/China trade deficit. Although that would not improve the jobs or manufacturing in the US, sometimes you can only bring somebody else down to your level in order to claim some kind of a victory. Both lose. I've seen some people say that the big winner of this trade war is going to Mexico, and I see some truth to that. Helping out Mexico certainly could, indirectly, help to ease some of the pressure on the situation with illegal immigration on the U.S. southern border.