JD Supra

D.C. Circuit Declines to Reconsider its Prior Order Restoring an Emergency Affirmative Defense for Emissions Violations Under the Clean Air Act

On January 2, 2026, the D.C. Circuit declined to rehear en banc its prior order restoring the Clean Air Act’s (CAA) Title V affirmative defense ...
Reuters

Overview of the Clean Air Act and Related Caselaw

A discussion of the Clean Air Act (CAA), its amendments, and significant caselaw pertaining to clean air regulation in the US. The second Trump administration is taking steps to roll back various ...
JD Supra

Up in the Air: Congress Nullifies Clean Air Act Waivers for California

Congress has passed three Congressional Review Act (CRA) resolutions to nullify a set of California's Clean Air Act (CAA) preemption waivers. President Donald Trump is expected to sign them.
The National Interest

The Clean Air Act Needs a Regulatory Face-Lift

The Clean Air Act’s outdated framework is hindering progress. New bills aim to modernize it with reforms aligned to today’s economic, environmental, and scientific realities. The Clean Air Act (CAA) ...
Scientific AmericanOpinion

America’s Air Is About to Get Dirtier—And More Dangerous

The Clean Air Act has saved millions of lives, but the EPA will stop calculating those benefits for at least some proposed ...
FedScoop

EPA webpage maps out path for data-center developers around air rules

Environmental Protection Agency Administrator Lee Zeldin testifies before the House Committee on Energy and Commerce Subcommittee on Environment in the Rayburn House Office Building on May 20, 2025 in ...