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S 4931 119th Congress · Senate

Bill to Rein in Clean Air Act Vehicle Rules

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Official title: A bill to amend the Clean Air Act to preserve consumer vehicle choice, protect the electric grid, and impose limits on regulations under that Act, and for other purposes.

This Senate bill would amend the Clean Air Act to preserve consumer vehicle choice, protect the electric grid, and place limits on EPA regulations under that law. In practical terms, it is aimed at federal emissions rules that can influence what kinds of cars and trucks automakers build and what vehicles consumers can buy. The bill would affect car buyers, auto manufacturers, utilities, and state and federal regulators by narrowing how aggressive Clean Air Act rules can be when they touch vehicle technology and electricity demand.

  • Amends the Clean Air Act to preserve consumer vehicle choice.
  • Adds limits on regulations issued under the Clean Air Act.
  • Aims to protect the electric grid from rapid transportation electrification.
  • Would affect federal vehicle-emissions policy and related state implementation.
  • Targets EPA authority rather than creating a new spending program or tax credit.
Public Relevance 30 / 100
Niche Modest scope Broad

For a typical American driver, this bill could make it easier to keep buying gasoline, hybrid, or electric vehicles without federal rules steering the market strongly toward one option. If you live in a region where EV adoption is growing quickly, it could also slow regulatory pressure that might otherwise push utilities, employers, and states to expand charging infrastructure and electrification plans. The bill is most directly relevant if you are a vehicle buyer, automaker employee, utility customer, or someone affected by air-quality and transportation rules.

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FOR
  • Car buyers who want more drivetrain options They may see the bill as preserving the ability to choose between gasoline, hybrid, and electric vehicles based on their needs and budget. Supporters argue that vehicle decisions should be driven by consumer preference and market conditions, not by federal rules that tilt the market toward one technology.
  • Automakers and suppliers Manufacturers often prefer a slower, more flexible regulatory path because it reduces compliance risk and gives them time to plan product lines, factories, and supply chains. They may support limits on Clean Air Act regulations that could force expensive redesigns or accelerate production shifts before demand and infrastructure are fully ready.
  • Utilities and grid operators Some stakeholders may back the bill if they believe current electrification policy is moving faster than grid expansion. They argue that reliability and affordability depend on matching vehicle electrification with generation, transmission, and distribution capacity.
AGAINST
  • Environmental advocates They are likely to argue that Clean Air Act vehicle rules are essential to cutting smog, soot, and greenhouse gases. From their perspective, limits on EPA authority would weaken one of the federal government’s main tools for improving air quality and addressing climate change.
  • State governments pursuing aggressive clean-car policies States that have adopted stronger emissions targets may oppose federal limits that could blunt their plans or create conflicts with existing regulations. They may argue that the bill would slow down efforts to reduce pollution and modernize transportation systems.
  • EV manufacturers and charging-industry businesses Companies built around electric vehicles and charging infrastructure may see the bill as reducing policy certainty and slowing market growth. They generally benefit when federal rules and incentives continue to push consumers and fleets toward electrification.
  • "preserve consumer vehicle choice"

    This signals an intent to prevent federal rules from narrowing the range of vehicles available in the marketplace. In practice, it could reduce pressure on automakers to phase out gasoline-powered models on a faster schedule.

  • "protect the electric grid"

    This points to concern that transportation electrification could strain power systems if it happens too quickly or without infrastructure investment. The practical effect would be to make grid reliability a consideration in vehicle-emissions policy.

  • "impose limits on regulations under that Act"

    This would narrow how far EPA can go when writing Clean Air Act rules. For consumers and companies, that can mean fewer regulatory mandates, but also fewer federal tools for reducing vehicle pollution.

  • "amend the Clean Air Act"

    Because the bill changes a core environmental law, its effects could extend beyond one rulemaking and influence future vehicle-emissions standards. That can shape long-term planning for automakers, states, and utilities.

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Bill
S 4931
Congress
119th Congress
Official title
A bill to amend the Clean Air Act to preserve consumer vehicle choice, protect the electric grid, and impose limits on regulations under that Act, and for other purposes.
Policy area
Environment & Energy
Latest action
Read twice and referred to the Committee on Environment and Public Works. (June 24, 2026)
Last updated
June 25, 2026

June 24, 2026

Read twice and referred to the Committee on Environment and Public Works.

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