to be fair most of trade today is overly interconnected for no good reason, i have seen scenarios mentioned where part is made in brazil, shipped to singapore, then assembled in thailand then shipped to usa. but it somehow comes cheaper than assembling in brazil and shipping to usa because of existing volume or something. but that's very shortsighted. Sure free market is efficient. But what it's not is forward looking. Govt can step in kick start reactions which leads to enough volume from brazil to usa to make that economical as well. but it'd have advantage of less fragile supply chain and more env friendly process....