And that's exactly what's happening. For all his faults (including mass manipulation and being a possibly-tyrannical demagogue) Trump is right about one thing - free trade is not always great and the loss of manufacturing was not "value added" for everyone in the US. But of course discussing this means opening up the whole argument about how economics is broken and you can't do that, as it would threaten stability too much. But anyone who looks into it can see it if they wish. Look into Jonathan Goldsmith's appearance on Charlie Rose when GATT (precursor to the WTO) was announced. He predicted the whole thing and what was going to happen. And he tried to warn us.
Link to video - https://m.youtube.com/watch?v=4PQrz8F0dBI
See 1 minuet or 3 minute mark