Once again, the EPA has overreached in its attempt to regulate entire industries out of business. The new mercury rules, for example, which is facing Supreme Court scrutiny right now, would be the most expensive ever, disrupt U.S. energy supply, and provide miniscule real-world health benefits. The EPA, however, has concocted a scenario that claims huge benefits and low costs -- based on "science" it will not share with Congress, let alone the public. Perhaps the Court will take a hard look at this "science" and decide it is insufficient to justify such draconian measures, perhaps not.