WASHINGTON -- Environmental Protection Agency officials didn't violate anti-lobbying laws amid a high-stakes campaign over California's request for permission to strictly regulate greenhouse gas emissions in vehicles, federal investigators have concluded. Rejecting charges by conservatives, the investigators said two top agency officials acted legally when they conveyed information to former EPA Administrator William Reilly, who supported California's clean-air waiver request. Reilly, a moderate Republican, was EPA administrator under former President George H.W. Bush. "EPA staff did not engage in any effort to influence a member of Congress or other covered official," the EPA's Office of Inspector General concluded in a...