If the US did this, the value of the dollar would plummet overnight, this hurting US consumers in the short term but in the long term allowing the US to become more of a manufacturing powerhouse again by creating products for export with its low value dollar and screwing over other low value currency countries also trying to do manufacturing like China and India.
the main reason the US would not want to do this is it would cause short term pain, sharp pain, even though in the long run it would weaken its enemies and make the world more reliant on the US.
The USA already have manufacturing plants on the Mexican border so they are kind of doing that already, just not enough of it.
Same with the EU. When Poland, Romania and Bulgaria joined it would have been perfect to reduce the dependency on China. 15 years of nurturing those countries and who knows where things would be now.
I suppose it comes down to population and even when you add up the workforce of Latin America, Eastern Europe, various African countries, it still doesn't compare to China.
Eventually the Chinese middle class will grow so much that there will be other countries coming along, but by that time China will likely be the new "world police" in town.
The metaverse concept is a possible curve ball though if digital products start replacing physical. Once the mainstream start using VR/AR then that could easily happen.