The us has done a terrible job helping workers find new employment when their old factory or similar manufacturing jobs were lost to another country. It's hard to see how we'll ever do a good job on that because half the country has an ideological resistance to helping each other (social security, medical insurance, a job, those are all things we should make on our own). I can't see that these tariffs can ever bring back many factory jobs to the us. We need a strategy to find new jobs and industries. The current plan is just not going to accomplish much of anything.
But, and it's a big but, lets not forget that trade between countries has a good chance of reducing the potential of wars between them. I really believe that extensive international trade between the us and china will have a good tampering effect on potential war between the two countries. Chinese building of military bases in the south china sea against the wishes of your neighbors and and asserting your power won't help anyone to trust china, but when there was extensive and growing trade between the two powerful countries war should be less likely.