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The head of the Environmental Protection Agency repeatedly refused to say Tuesday how soon he will comply with a Supreme Court ruling and decide whether to regulate carbon dioxide, the leading gas linked to global warming.
EPA Administrator Stephen Johnson, appearing before the Senate Environment and Public Works Committee, was asked repeatedly to provide a timetable for responding to the April 2 Supreme Court decisions. The court said the Clean Air Act makes clear the agency must regulate carbon dioxide if it's found that it endangers public health.
The legal argument has been settled and “now there's is an unmistakable green light to take action now,'' Sen. Barbara Boxer, D-Calif., the committee's chairman, told Johnson: “There is no excuse for delay.''