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Members of the majority argued that outdated permitting rules and regulatory uncertainty are delaying large investments — particularly in semiconductors, data centers and energy infrastructure — and cited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 Koontz, senior director for environmental health and safety at Micron, said the company is investing heavily in U.S. semiconductor manufacturing but has faced ‘‘lengthy, duplicative’’ permitting reviews that have delayed construction and operations. Koontz asked for clearer definitions for smoke and wildfire contributions to PM2.5, faster interagency coordination, and modernization of permitting tools and staffing.

- Energy infrastructure: Mark Gebbia of Williams Companies argued that legacy rules written for older steam‑electric plants can be misapplied to modern behind‑the‑meter gas generation and suggested clarifying how New Source Review (NSR) and other programs apply to those technologies so power can be delivered to data centers and other large loads more quickly.

- State regulators and public‑interest lawyers: Ali Mirzakalili (Oregon DEQ), Clint Woods (Indiana Department of Environmental Management) and Carrie Powell (Southern Environmental Law Center) cautioned that several draft bills could substantially weaken long‑standing protections. Mirzakalili and Woods emphasized that permitting agencies need funding, modeling tools, and updated guidance rather than broad statutory exemptions; Powell warned that changes to NSR or creation of pay‑to‑play offset options would ‘‘put communities at risk’’ and could let sources increase actual emissions without modern controls.

Points of dispute

- Presidential waivers: The draft labeled in testimony as the ‘‘air permitting improvements to protect National Security Act’’ would create a new presidential exemption for certain projects. Opponents said recent uses of presidential exemptions under section 112(i)(4) have been issued without a public record and could be abused to favor particular firms. Supporters argued that some national security or competitiveness concerns merit a streamlined path in narrow circumstances; critics insisted any such path must include public health guardrails and transparency.

- Measurement and exemptions for wildfire smoke and background contributions: Industry witnesses and some members called for clearer, codified treatment of wildfire and international background contributions to PM2.5 and ozone so that states and applicants are not ‘‘penalized’’ for pollution from natural events or from upwind sources. State regulators said the existing ‘‘exceptional events’’ and section 179B procedures can address many of these issues but need better resources and clearer guidance; they warned against provisions that would simply exclude validation of real air quality problems.

- New Source Review reform: Several industry witnesses support narrowing the circumstances under which facility changes trigger NSR to reduce project delays. Environmental witnesses said some proposed measurement changes and broad exemptions could allow increases in real annual emissions without requiring modern controls or offsets, harming nearby communities.

Legislative items discussed (as presented to the committee)

- New Source Review Permitting Improvement Act (discussion draft): Proposes changes to how NSR applicability is assessed; industry says it would reduce duplicative requirements, opponents say it risks exempting many modifications and increasing emissions.

- Air Permitting Improvements to Protect National Security Act (discussion draft): Would create a presidential exemption for certain facilities on national security grounds; witnesses raised concerns about transparency and lack of public health guardrails.

- Fire Act (discussion draft): Would change how wildfire and other ‘‘exceptional events’’ are treated in attainment assessments; proponents said it clarifies treatment of wildfire smoke, while critics said it might be used to exclude pollution that occurs during hot, stagnant conditions.

- Fences Act (discussion draft): Seeks to clarify section 179B (‘‘would have attained but for’’ demonstrations) so that states are not designated nonattainment when much of an area’s pollution is uncontrollable. State regulators generally supported clearer pathways but said EPA guidance and funding are needed for implementation.

- Red Tape Act and related drafts: Aim to reduce duplicative federal reviews and accelerate federal action; state witnesses said EPA second‑guessing can add delay and should be narrowed, while public‑interest witnesses emphasized the need to preserve legal tools that ensure health protections.

What the hearing did not produce

No formal motions or committee votes were recorded during the hearing. Several members said they support bipartisan, targeted permit reforms; several other members said they would oppose bills that they view as rolling back critical health protections.

Clarifying details captured from testimony

- PM2.5 standard: Witnesses referenced the recent PM2.5 revision from a level described in testimony as ‘‘12 micrograms’’ to ‘‘9 micrograms’’ and noted that some attainment areas have background levels near 6 micrograms, reducing available ‘‘headroom’’ for new projects.

- Section 112(i)(4): Multiple witnesses cited the existing presidential exemption process under Clean Air Act section 112(i)(4) as a precedent for concerns about transparency and potential misuse.

- Section 179B: Repeatedly referenced as the statutory mechanism to demonstrate that an area ‘‘would have attained but for’’ international transport; witnesses urged clarification and resources for states seeking 179B demonstrations.

Speakers (listed in testimony and exchanges)

- Chairman Palmer — Chair, Subcommittee on Environment (House Energy and Commerce) (government) - Representative Tonko — Ranking Member, Subcommittee on Environment (government) - Representative Guthrie — Chair, full committee (government) - Representative Pallone — Ranking Member, full committee (government) - Representative Crenshaw — Vice chair (government) - Danny Seiden — President and CEO, Arizona Chamber of Commerce and Industry (business) - Ashley Koontz — Senior Director, Environmental Health and Safety, Micron Technology (business) - Carrie Powell — Senior Attorney and Air Program Leader, Southern Environmental Law Center (nonprofit) - Mark Gebbia — Vice President, Environmental and Permitting, Williams Companies (business) - Ali Mirzakalili — Air Quality Division Administrator, Oregon Department of Environmental Quality (government) - Clint Woods — Commissioner, Indiana Department of Environmental Management (government)

Ending: The hearing underscored a clear split: industry and some state officials want statutory changes to provide predictability and speed permitting for projects tied to semiconductor manufacturing, data centers and energy infrastructure; public‑interest lawyers and many state regulators warned that several discussion drafts, particularly those creating broad waivers or changing how NSR is measured, risk weakening public health protections without delivering certainty. Committee members said they remain open to bipartisan work but emphasized the need for clearer policy definitions, stronger transparency requirements, and better resourcing for state permitting agencies before any statutory overhaul is finalized.