Overview

• Lee Zeldin announced on July 29 that the EPA intends to reverse its 2009 Endangerment Finding, the legal basis for federal greenhouse gas regulation under the Clean Air Act.
• The repeal proposal has entered a 45-day public comment process, a prerequisite for any formal rollback of federal greenhouse gas regulations.
• If finalized, this action would be the largest deregulation measure in U.S. history and would strip away key automotive emissions standards covering the nation’s top source of greenhouse gases.
• Environmental groups and legal experts plan to challenge the repeal in court, a battle expected to reach the Supreme Court’s conservative majority.
• The decision follows President Donald Trump’s withdrawal from the Paris Agreement, with fossil fuel development accelerating in Alaska’s oil and gas fields.