Yes, China has historically been very bad and the US started to make strong inroads in moving away from Hydrocarbons. But China has made a commitment to change i.e. electric vehicles, solar, wind etc. while the US under Trump has begun to abandon many programs in favor of the oil companies and coal. Many US companies are not following in line with that and continue to work on reducing emissions and renewable energy. Unfortunately the administration isn't in that camp. Sorry, I guess this is political.