Overview

• EPA’s proposal would revoke the 2009 endangerment finding that designated greenhouse gases as a threat to human health under the Clean Air Act.
• Administrator Lee Zeldin defended the repeal on CNN by asserting the original finding relied on pessimistic assumptions and arguing contemporary data no longer support it.
• A Department of Energy report cited by the administration contends that domestic emissions have risen without producing the level of adverse health and welfare impacts anticipated in 2009.
• Climate scientists and environmental advocates warn that undoing the endangerment finding would strip the federal government of its primary authority to regulate planet-warming pollution.
• The proposal is now open for public comment and is expected to face legal challenges invoking Supreme Court precedents on EPA’s greenhouse gas authority.