I think Trump wants to rebuild American manufacturing at any cost, because the USA is going to need it when they are at war with China and can't buy things from China anymore.

He isn't trying to hurt trading partners. He isn't trying to make American's poorer. But those things are also consequences. Big costs.

The fact that he is willing to pay such big costs leads me to believe that the US actually intends to go to war with China. Why is that important? Beats me.