And national security is precisely the argument made in favor of steel and aluminum tariffs by Secretary of Commerce Wilbur Ross in a Wall Street Journal op-ed:
One more point before I leave this subject. I get it. You don’t like “brown industries”. Propose an alternative to manufacturing, building, farming, mining, and so on that will provide decent livings for the majority of Americans who will never get a college degree and who don’t have the qualities of mind and temperament to be software developers. It’s not going to be driving for Uber or working in an Amazon warehouse. That’s especially incumbent on you if your own job is protected by trade restrictions.