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One of the rare Bush administration clean-air policies favored by enviros has been struck down by a federal appeals court. The Clean Air Interstate Rule would have required 28 Eastern states to reduce soot-causing, smog-forming emissions that easily spread on the wind. The U.S. EPA estimated that the rule would prevent 17,000 premature deaths per year, tens of thousands of nonfatal heart attacks, millions of lost work and school days, and up to $100 billion in health-care costs. But ruling in favor of electric-power producers, the U.S. Court of Appeals for the District of Columbia Circuit found that the EPA overstepped its authority in instituting the rule and that the regulation contained “more than several fatal flaws.” Says Frank O’Donnell of advocacy group Clean Air Watch, “This is without a doubt the worst news of the year when it comes to air pollution.”