President Bush doesn't talk about new-source review very often. In fact, he has mentioned it in a speech to the public only once, in remarks he delivered on Sept. 15, 2003, to a cheering crowd of power-plant workers and executives in Monroe, Mich., about 35 miles south of Detroit. It was an ideal audience for his chosen subject. New-source review, or N.S.R., involves an obscure and complex set of environmental rules and regulations that most Americans have never heard of, but to people who work in the power industry, few subjects are more crucial. Advertisement The Monroe plant, which is...