I generally support tariffs if there is ANY reason to have one.
I generally oppose tariffs unless there is a good reason to have them. The problems is that our trading partners continually cherry pick which tariffs they support and which tariffs they oppose, always to their benefit and our detriment. For example, Canada wants to sell us cars but doesn't want to buy our dairy products. In addition, they have undermined our tariffs on China by buying its cheap steel while selling us their domestically produced steel. The only way to effect change is to apply consequences to this type of behavior.