Even if the totality of the US agreed to live in mud huts, walk everywhere, and not burn fires. Africa, India, Pacific Rim nations and China would keep on polluting at levels we didn't come close to at the height of our SMOG days in the 70's. They would make up for us returning to the stone age and then some on their own.
Of the 1.6 billion Chinese, only about 300 million live the good life in their modern cities equal to our hated over consuming and scorned U.S. level of living by a population of only 320 million. The rest live in the country on farms and many burn dung or wood to survive. While the other 300 million need so many coal burning plants to create and maintain their level of living that they have real SMOG problems that really kill people every year from direct inhalation while living in some of the most modern cities on the planet. Along with killing natural water sheds and the surrounding country near their hundreds of coal fire electric plants and coal fire industries from the byproducts.
India has 1.2 billion Indians with a growing modern sector close to 300 million like China, and the rest living in rural areas burning dung or wood, and so forth etc. And don't forget the Asian brown cloud from all the fires used by the rural peoples from east Africa through to Asia that has impacted the monsoon cycle and is creating a slight cooling effect in that region.
Both nations along with Africa and the whole Pacific rim consume more hydrocarbon based fuel than the USA can ever hope to. And the demand is only going up as all of these nations very small wealth producing sectors modernize, expand, and want all those creature comforts the world and our Stupid leftist fruitloops accuse the U.S.A. of destroying the planet for past and present. Because somehow our greed is more damaging to mother earth than their greed or some fruitlooped stupid reasoning like that.
The USA is not the single most evil polluting country creating single handedly global warming on planet earth. And never was. We were just the first to modernize at the rate we did which quickly made us one of the wealthyest. We are also one of the easiest nations to con into feeling guilty for existing, and letting ourselves be robbed blind by countries and world organizations including the EU. Who can't meet their own CO2 goals and couldn't give a ratz keester other than the revenue it feeds into their governments. The EU needs all the money it can get to pay cradle to grave for all of their unemployed, and the UN has a never ending desire visa what ever the scam to become a world government some day. And global warming is a great revenue train if a global tax can be imposed. And once a tax can be imposed, you can impose government with it to enforce collecting it.
Global warming is BS, but, it's a great scam to create government forced transfers of wealth and power, along with modifications in society against the rights and legal will of citizens to save them from a contrived global catastrophe. Citizens who buy in to it are "tacitly" voting for their government to assume cradle to grave authority over their lives and anyone who believes other wise without having to declare itself a dictatorship.
You have to respect China for making no bones about not taking part in the global warming scam and telling the rest of the fruitloops to screw themselves. They don't need to con their citizens into accepting becoming wards of the state with the lie of saving the planet.