According to this
first hand account, China wrecked the climate change negotiations at the Copenhagen conference. China's economic growth requires coal. They are understandably reluctant to change.
Fine. The correct response is to place a 100% tariff on Chinese imports.
China needs us more than we need them. We can make our own stuff. Whereas China has no one else to buy all their stuff.
China owns ~$800b of our debt. As we learned from Donald Trump, borrow enough and you own the bank. Let the dollar crash. China's advantage will disappear. A lower dollar leads to more American exports.
China will cry uncle when the economic pain causes more social unrest than they can manage. Perhaps 400m unemployed, angry Chinese citizens will suffice.
Then we say: Oops, big misunderstanding. Tell you what. You agree to meet these new improved aggressive emission reduction targets, we'll drop the tariffs. Everyone will be happy again. Deal?
[Edited to add cites for debt, unemployment. -- Jason]