Buddy, USA is still the current largest CO2 contributor for the last 60 years. Even at today China rise, China Co2 emissions still have a long ways before it can match up to your American pollution of the environment for the last 60 years!
In case you don't knows this, American with 300 millions polluting many time more then 1.3 billion Chinese; so you stupid should just STFU about other people and first clean up your own mess.
Now, goes and sign the Environmental Accords before you talk more BS.