By making the imports needed for domestic production and infrastructure development more expensive through tariffs, before there are domestic alternatives avail

By making the imports needed for domestic production and infrastructure development more expensive through tariffs, before there are domestic alternatives available, and expelling large swathes of the labour force necessary for such construction, no he really isn’t. It would be possible to develop domestic supply capacity, starting with the inputs necessary to feed that development, and then nurture and encourage the process with a targeted ramp up of tariffs. That’s not happening though, instead domestic investment is collapsing.