I don't think Trump is repeating the same tropes because he is leftwing. He just straight-out clueless, and finds a target, any target, for his attacks. China is a great target, whether the attack is right or not, it doesn't matter to him, as long as his supporters lap it up.
> before it began investing on building one.
That is my point. Americans chose not to do that. A loss of manufacturing didnt "happen to america" like some crime. American society chose to be educated differently, chose to spend and raise taxes differently, and presently, continues to choose to do so.
The "blame china and outsourcing" narrative is just misdirected scape-goating. Trump's repetition of it is a pretty strong signal of its mumbo-jumbo narcissim.
China has invested in its infrastructure to an incomparable degree. The US has not, does not, and will not. It is your fault.