#Trump's tariff proposal is something folks who still thought illness was caused by the humors could see through -- and did.
Also:
It'd cost US consumers $3.9 trillion.
It would not result in China, or any other foreign state, footing the bill. At all.
It would not suddenly create robust domestic industries.
It would probably cause a trade war.
Even if it ever did, it would be done so disproportionately on the backs of the lowest-income consumers.