There seems to be a lot of groupthink on HN. Pretty much every comment in this thread that views tariffs remotely positively is being downvoted. I view them slightly negatively, but protectionism (not necessarily tariffs) does help struggling or new industries develop if coupled with good export policies (see China, Taiwan, South Korea, and Japan for examples), so the idea that tariffs have no arguments for them seems a little farfetched to me.