The problem is that trade partners will retaliate.
How? China and Japan buy little from us now and charge tariffs on everything we sell them.
I will let better minds than mine to answer. However logic tells me a substantial increase in tariffs will have an effect and our dear Asian friends and their "saving face" culture does not allow them to sit idly by.
You NEVER hear that point in the MSM.
And it was always justified by saying that these were developing countries, they needed to "protect" their own economies so they could get them going - validating the concept inadvertently.
Well they don't need to "get them going" anymore, do they?
They grabbed most of ours laughing. What fools would let their own livelihoods go?