Clean air advocate responds to Bush's speech

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Stephen Smith, executive director of the Southern Alliance for Clean Energy, responds to President Bush's Earth Day speech at McGhee Tyson Air National Guard Base. While Smith praises Bush's diesel pollution reduction rule, he criticizes the administration's rollback of Clean Air Act protections, withdrawal from the Kyoto Protocol, and failure to address global warming. Smith argues the administration is undermining environmental progress by weakening mercury controls and preventing states from suing polluters.