I read somewhere US citizens patronize Chinese and Japanese tech products more than homemade ones. I guess it's because of their superior quality. I see the trade tarrifs taking a nasty angle, because if the prices are raised but the quality of homemade products can't match the quality of imported products the masses will put pressure on the government. If that doesn't work Brics nations can reply with their own tarrifs on American products like iPhones and the rest. Trump better be sure where he places his feet.
There are 7.7B people outside of the US. At the moment, they aren't consuming as much per capita, nor at as high price, but that could change.