“Four Senate Democrats called on EPA chief Stephen Johnson to resign Tuesday, alleging that he gave misleading testimony to Congress and repeatedly bowed to pressure from the White House to avoid regulating greenhouse gases. California Sen. Barbara Boxer, who chairs the Senate Environment and Public Works Committee, and three other Democrats on the panel — Sen. Sheldon Whitehouse of Rhode Island, Sen. Amy Klobuchar of Minnesota and Sen. Frank Lautenberg of New Jersey — also announced they are urging Attorney General Michael Mukasey to investigate whether Johnson made false statements to Congress. Mukasey’s office said it was still reviewing the request late Tuesday. The pressure on Johnson is part of an escalating battle between Democrats in Congress and the White House over climate change policy.” (07/30/08)