The Clean Air Act could not be clearer: EPA has an affirmative duty to protect public health and welfare from air pollutants, including greenhouse gases. The Supreme Court affirmed this responsibility in 2007, ruling that greenhouse gases are pollutants subject to regulation. Indeed, in your own confirmation hearing, you acknowledged that the Clean Air Act gives EPA the authority to regulate greenhouse gases as pollutants. It fails to meet your statutory obligations under the Clean Air Act. The state has run on 100% clean electricity for some part of the day almost every day this year.