The Supreme Court appeared ready Monday to decide the limits of the EPA’s authority to regulate greenhouse gases at power plants, but gave no clear signals about where or how it might draw such a line.
In two hours of wide-ranging oral arguments, the justices debated the wording of the Clean Air Act and how courts should decide about how much power Congress gave to the EPA when it comes to regulations of carbon emissions.
Questions from the justices in the conservative majority suggested a more skeptical view of EPA power. A decision in the four consolidated cases, expected by the end of the term at the end of June, could shape the EPA’s reach at a time when the Biden administration is crafting its own version of power sector regulations.
