Hoover fellow Henry I. Miller, M.D., looks at the Environmental Protection Agency's Superfund program. Established more than a decade and a half ago as a five-year project, Superfund has never been shown to have done any good but has without question caused a great deal of harm. So what keeps Superfund going? "Dogs bark, cows moo, and regulators regulate."The content of this article is only available in the print edition.