Thanks for your thoughtful and in-depth analysis.
Bush's "Clear Skies Initiative" exempts power plants from being held accountable to the Clean Air Act's New Source Review (NSR) standards and from being required to install cleanup technology (best available retrofit technology or BART). NSR standards require new power plants and upgraded plants to comply with modern federal emissions limits. BART protects communities from persistent haze and other air quality problems by reducing the pollution emitted from antiquated power plants.