I think they knew all along and were just hoping we would let ourselves get pressured into it. But Clinton, Bush, Congress, Russia and China have no intention of crippling themselves to appease the chicken little lunatics. The only true believer left is Al Gore, who makes Lyndon LaRouche look sane.
China would have benefited greatly because they were not included (they're a developing nation donchknow). Most of the pollution comes directly from China, but the wackos won't mention that. It's all a scheme to transfer money. There was even a whole trading center already set up ready to trade credits (after taking a cut for themselves)