Have they really? It seems so impossibly unworkable given we don’t make most things here.
It’d likely cause a lot of inflation on manufactured goods, but it’d make manufacturing here a lot more competitive, and greatly increase the leverage of blue collar workers in developed countries, which should reduce income inequality within the country - it would make the rich poorer, but the poor potentially also richer in real terms.
It’s the only way I see of realistically tackling climate change.