US promoted free trade after WWII, when it was the last man standing and the only manufacturer. Free trade meant "we sell made in America all around the world". Leading by example meant opening their market, at no cost since nobody was in a position to export. The rationale was "open your markets as we do, and we will all get richer". But the real intent was to foster the dominance of American manufacturing
So we did. The whole world has been painfully opening markets for 70 years, and slowly, by finding cracks in the system designed to favor American interests, developing countries have indeed started to grow richer. Still poor compared to the US, but definitely better off.
Those open markets, designed by the US to export, have been used by two actors to import to the US:
- emerging markets (China, India, ...). This was the selling point of opening the markets, so this is perfectly fair
- US capitalists, trying to increase profits by moving production overseas and reduce costs. This is what is causing problems in the US, by losing jobs. This is a homegrown problem, and nothing the rest of the world should care about.
Basically, now that the world is starting to benefit from globalisation, after the US being the main beneficiary for over 50+ years, we somehow need to start caring about internal US problems.
I do not buy this.