As always, Trump talks about tarffs as if it's a punishment he threatens to impose on other nations, when in reality, tariffs are first and foremost a punishment on the American people.
Exporting countries will not foot the bill. American importers will, and they'll pass the extra cost on to the American consumers.
Tariffs may ultimately spur the development of domestic manufacturing of whatever imported goods will be taxed. That's the entire point of tariffs after all. But it's far from certain and it will take years in the best of cases - years during which Americans will become poorer and will have a harder time making ends meet.
That's what Trump is really proposing. That's what the Americans voted for.