On January 21, 2026, the House Committee on Energy and Commerce reported a package of bills that, if enacted, would constitute the most significant amendments to the Clean Air Act (CAA) since 1990. The amendments address core CAA programs, including New Source Review (NSR), National Ambient Air Quality Standards (NAAQS), and EPA’s permit review authority under the National Environmental Policy Act (NEPA). Narrow margins in Congress present high hurdles but, if enacted, these amendments could have widespread operational and compliance implications across the energy, industrial, and manufacturing sectors.

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