A blog post by Paul Krugman suggests to me that Trump may know a lot about commercial real estate but not much about manufacturing.
What happens if the protectionist-in-chief goes ahead and does it, as I suspect he will? …But what would happen would be a global trade war, which would disrupt the existing economic structure, which is built on elaborate international supply chains. …In the long run, a new structure with shorter chains would be built. But in the meantime, some industries, some factories, would end up becoming sudden losers — in the US as well as in developing countries.