Actually, China is known for aggressively pushing for renewable more than almost anyone to fix the very pollution issue you mentioned. It’s been the case for many years now and that’s why they are far ahead of the US in their embrace of renewables already.
China lacks natural fossil fuel resources, it needs to import most of what it consumes, so there's an economic reason to move to renewables ASAP.
America on the other hand is rich in coal, gas and oil and is desperately trying to keep that "Trump" card in play for as long as it possibly can.