I think the "pro" argument is that, if you make imports too expensive, we will have to revert to domestic manufacturing. Even if that leads to higher prices, i

I think the "pro" argument is that, if you make imports too expensive, we will have to revert to domestic manufacturing. Even if that leads to higher prices, it also leads to more domestic jobs and more domestic companies. That might be a net win, even with the higher prices. The "con" reply to the "pro" argument is that, even if that's all true, the prices still go up, and that's probably a losing political argument if people actually understood what it was going to mean.