Having now been in China for several weeks this beating the drum trying to make americans feel guilty (and give power over to other people) is absolutely absurd. You want to control pollution the first places to start are china and india. The US in comparison produces negligible impact.
As usual, total numbers are meaningless without scaling them by population. If China split into 100 independent states tomorrow, they wouldn't be a problem anymore by your metric, even if they produce exactly the same amount of CO2 as they do now.
Fair comparison with roughly equal population: Europe, the US, and Australia combined vs. China. And the former group produces more CO2 than the latter.