Kimberly Strassel picks up on the scandal that is Congress' alternative energy legislation

(first mentioned here back on April 3, linking to Christopher Hayes' piece).

Kim's update lists out in greater detail the horrible unintended consequences of what George Bush and Congress passed in 2005:

This is the tale of how a supposedly innocuous federal subsidy to encourage "alternative energy" has, in a few short years, ballooned into a huge taxpayer liability and a potential trade dispute, even as it has distorted markets and led to greater fossil-fuel use.
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If Congress is going to lard up the tax code with thousands of complex provisions designed to "encourage" behavior, it shouldn't be surprised when those already practicing said behavior line up for their reward, too.
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Happy as industry is to have this new federal lifeline in the middle of a recession, it is the only one smiling. Foreign competitors are screaming that the subsidy is unfairly propping up the U.S. industry in tough times. They claim the U.S. industry is ramping up production simply to realize more tax money. Canadian forestry firms are already demanding their government file a trade complaint.

In order to qualify for the credit, alternative fuel must be mixed with a taxable one. (The government might want to encourage alternative fuels, but not to the extent that it loses its gas-tax revenue.) This means that to qualify, the paper industry must mix some diesel with its black liquor. This has sent environmentalists around the bend. They have accused the industry of burning fossil fuels that it didn't used to burn, simply to get the tax dollars. (The industry has not been clear on whether it is, in fact, using more diesel.)
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And then there's Congress, which is suddenly looking at billions more in red ink than expected. In 2007 it estimated a 15-month extension of the credit would cost taxpayers $333 million. It has since revised those numbers to take into account black liquor and is now figuring a one-year cost of more than $3 billion. Wall Street analysts are talking $6 billion.
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But this, in turn, has tossed up uncomfortable questions. The paper industry argues that if the government is going to be in the business of rewarding good behavior, it ought to do it equally. Is green policy only to be aimed at dirty or economically unviable actors? Is black liquor any less useful than ethanol or biodiesel, and if so why? If not, shouldn't Washington encourage its use? Isn't every green subsidy in fact the basis for a trade dispute? These are questions Congress has no interest in confronting, since it would expose the muddle that is its entire green-energy program.