The man who will almost certainly become Japan's next prime minister, Yukio Hatoyama, is promising to cut the nation's greenhouse gas emissions by 25 percent from 1990 levels by 2020.

That is a far more ambitious target that can be found in the legislation currently making its way through Congress. The cap-and-trade bill passed by the House of Representatives would trim U.S. emissions by 17 percent from 2005 levels. That translates to around a 6 percent cut from 1990 levels.

But even that lesser reduction seems unlikely to happen anytime soon. Climate change legislation faces a tough road in the Senate, and it may get pushed back to 2010 or beyond.

Cap and trade is, like healthcare reform, in trouble, and for many of the same reasons:

- There doesn't seem to be an acute crisis. Polls show that the vast majority of Americans are satisfied with their healthcare. Reasons for complacency can also be found in recent developments in climate change. A new NASA study notes global temperature increases have stalled out this decade, likely because of decreasing solar irradiance.