I'm afraid my view is a bit more jaded - I think those storylines were manufactured for ulterior motives as part of an effort to sell a program to the American public that would significantly reduce the average standard of living while concentrating wealth in the hands of billionaires. They'd already seen the effects of NAFTA and with China, they were hungry for more of the same.

I don't believe the conversion of the industrial manufacturing heartland of the United States to a region now called 'The Rust Belt' was accidental or unplanned. Nor was the destruction of much of the West Coast garment and electronics manufacturing industries.

This has been a deliberately planned policy with a known outcome by its architects, and it's been going on for about four decades. See for example:

https://www.epi.org/blog/nafta-twenty-years-disaster/

> "By any measure, NAFTA and its sequels has been a major contributor to the rising inequality of incomes and wealth that Barack Obama bemoans in his speeches. Yet today—channeling Reagan, the Bushes and Clinton—the president proposes two more such trade deals: the Trans-Pacific Partnership with eleven Pacific Rim countries and a free trade agreement with Europe."