House Energy and Commerce hearing spotlights clash over Clean Air Act permitting reforms

The House Energy and Commerce Subcommittee on Environment spent its hearing examining multiple discussion drafts to change how permitting under the Clean Air Act is carried out, with witnesses and lawmakers sharply divided over tradeoffs between speeding industrial investment and protecting public health.

Members of the majority argued that outdated permitting rules and regulatory uncertainty are delaying large investments — particularly in semiconductors, data centers and energy infrastructure — and cited examples where lengthy reviews slowed or threatened projects. Witnesses from industry and state permitting agencies described duplicative reviews, limited ‘‘headroom’’ under tightened National Ambient Air Quality Standards for fine particulate matter (PM2.5) and the difficulty of planning multibillion‑dollar investments without statutory certainty.

Opponents — including lawyers from public‑interest groups and state air regulators — said the proposals on the table would create wide exemptions and ‘‘off‑ramps’’ that could increase pollution in already overburdened communities. They singled out a discussion draft that would allow presidential waivers tied to national security as particularly problematic, saying past use of a presidential exemption under Clean Air Act section 112(i)(4) had occurred with little public record or justification.

Why it matters: permitting is the mechanism that implements Clean Air Act requirements at the facility level. Changes to how projects are reviewed, how background pollution is treated, or when offsets are required could affect whether projects are built in the United States or delayed, while also determining whether communities near major industrial facilities see higher or lower pollution.

Key points from witnesses and members

- Industry and business groups: Danny Seiden, president and CEO of the Arizona Chamber of Commerce and Industry, told the panel that states like Arizona face ‘‘background’’ ozone and particulate pollution driven largely by sources outside their borders — including wildfires and international transport — and that current permitting rules can penalize states for pollution they cannot control. Seiden urged statutory reforms to provide ‘‘certainty’’ to investors, including codifying flexibility around section 179B demonstrations and modernizing permitting timelines.

- Micron Technology: Ashley…