The United States has announced it's ready to accept binding emission targets - if China and India accept the same deal.
Sounds good, don't it? But there's a hitch. The United States isn't going to consider per capita emissions standards but only national standards. That means the US, which is barely a quarter of the population of China, reserves to itself the right to produce the same volume of emissions as China. On a per capita basis that would leave Americans able to be four times as dirty as Chinese.