I agree that
@DavidMV that tariffs could be used to support domestic supply. Especially if you used the tariffs on imports to fund direct subsidies for domestic production.
This is a politically treacherous path to go down, because we can certainly get addicted to such practices. In the end, it would just lead to higher prices (inflation) and hurt international competitive of US-based manufacturers. Therefore, there ought to be a goal of some % domestic production, and then adjust tariffs/subsidies accordingly. Either that, or limit the margins of these producers - if they're going to receive subsidies and protection, then the tradeoff is that they can't make a windfall off it.
en.wikipedia.org
Fun fact: this is what the teacher was lecturing about, during the famous "Bueller, Bueller... anyone?" scene of
Ferris Bueller's Day Off.