But China would have a big incentive to invest in a US "Green New Deal" or maybe a redeployment from a War on Terror to a War on Climate Change:
(a) substitution - because every barrel the US saves and does not consume is one more available to China;
(b) technology transfer - any breakthrough technologies or advances would be simpler and cheaper for them to get at if they invested heavily in them, or even owned them. "Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky