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 ...
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The Clean Air Act needs a regulatory face-lift
The Clean Air Act (CAA) is now 55 years old—and shows its age. That's not a critique of its legacy. The law, in conjunction with innovation and private investment in environmental improvement, has ...
California's unique ability to set its own vehicle emissions standards under Section 209(b) of the Clean Air Act (CAA) is facing unprecedented legal and political challenges. At the center of the ...
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 ...
Semitruck-sized power generators that data centers use must comply with Clean Air Act standards, officials ruled on Thursday.
In its Friday update, the EPA said, "These plants are vital to delivering reliable and affordable energy to Colorado families ...
The Clean Air Act’s outdated framework is hindering progress.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) ...
The Clean Air Act’s outdated framework is hindering progress.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) ...
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