If President Trump has been clear on one thing, it's that globalized trade is a raw deal for American workers. Of course, most mainstream economists and commentators do not agree, to put it mildly. They see globalized trade as a win-win for everyone, and Trump's "America First" agenda as myopic and destructive. But our protectionist in chief is getting at least a little sympathy from one unlikely group: progressive economists. That sympathy is complicated, and it doesn't often translate into support for Trump's specific policies.