Rush plays a clip frequently (and maybe it's old) that only one country signed Kyoto. Do you have a link that confirms which countries signed Kyoto; I'd love to read who signed on.
Many countries have signed Kyoto. The US signed Kyoto. That is far different than ratifying the treaty and making it law. That only a handful of countries have done.
If Rush's point is that there is only one country affected by Kyoto that actually ratified it, then he's dead on.
The US actually signed Kyoto - President Clinton did it to kiss environmentalist ass, knowing full well that the Senate would never ratify it.
As of February 2002 104 countries had signed it and 85 had ratified it.