

the US relies heavily on imports and doesn’t have a strong manufacturing base for most products
And that’s the problem Trump is seemingly trying to fix. I agree he’s not going about the right way. His approach is a kind of clumsy shock therapy, that will cause chaos in at least the short term and may or may not produce the desired result, eventually, but reshoring production and rebuilding a strong manufacturing base for the US is a goal shared by the Democrats, as well.
I agree, rebuilding a US manufacturing base will require competent planning and management, but those are bad words here in the US, when it comes to the economy. To many Americans, competent, central economic management, direction, and planning is tyrannical rule by elites. To those Americans, Trump is the antidote. You might point out that there is significant irony in that. I agree, it is ironic, but that irony is completely lost on many millions of Americans.