Yeah, the, misguided, idea is that the increase in price from imports will drive domestic production, of those things, as the high prices reduce demand, and cut into profit margins. This used to be something that was a sensible assumption of what would happen. However the contemporary world has far too much infrastructure for tariffs to truly work like that any longer. It will, usually, be cheaper to increase the costs for the tariffs, than to restructure back to domestic production.