Congress strips EPA power to phase out gas-guzzlers via emissions rules

What it does

This bill repeals the EPA's 2024 multi-pollutant emissions rule for 2027+ light-duty and medium-duty vehicles, and amends the Clean Air Act to prohibit tailpipe regulations from mandating specific engine technologies or reducing the availability of new vehicles based on engine type. The net effect is to block EPA authority to phase out or restrict internal combustion engines through emissions standards, preserving the market for gas-powered cars regardless of climate or air-quality targets.

Why we flagged it

The bill's operative mechanism is to strip EPA authority to regulate tailpipe emissions in ways that would restrict internal combustion engine sales. While framed as 'choice' and 'availability,' the functional effect is to prevent the agency from using its statutory Clean Air Act authority to reduce vehicle emissions, a core deregulatory move.

What the text implies

• The 24-month revision deadline forces EPA to rewrite existing regulations to comply with the new prohibition, effectively invalidating rules already in force and creating legal uncertainty for automakers and regulators.
• The phrase 'including any regulation prescribed after January 1, 2021' retroactively constrains EPA rules already issued, potentially reopening settled regulatory questions.
• By barring regulations that 'result in limited availability' based on engine type, the bill may prevent EPA from enforcing tailpipe standards that would naturally phase out the highest-emission vehicles, even if those standards are technology-neutral on their face.
• The bill does not repeal the EPA's statutory authority under the Clean Air Act; it redefines what that authority can accomplish, creating a new statutory floor that may invite litigation over the scope of EPA's remaining discretion.

Section numbers refer to the bill text the analysis read — linked under Primary records below.

Who it affects

Citizens lose enforceable air-quality and climate protections. The bill explicitly bars EPA from using tailpipe standards to phase out high-emission technologies, shifting regulatory power away from public health and toward vehicle-market choice. Ordinary people in polluted areas and future generations bear the cost of foregone emissions reductions.

Who stands to gain

• automotive manufacturers (especially those with large internal combustion engine portfolios)
• oil and gas industry (reduced pressure to transition vehicle fleet away from fossil fuels)

Named in the bill

Environmental Protection Agency (EPA), Clean Air Act, Section 202(a)(2), Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicl, light-duty and medium-duty vehicles, internal combustion engines

Where it stands

25 cosponsors: 25 Republicans.

• Mar 12, 2025 — Introduced · Congress.gov: “Introduced in Senate”
• Mar 12, 2025 — Referred to Senate Committee on Environment and Public Works · Congress.gov: “Read twice and referred to the Committee on Environment and Public Works”

Dates and quoted wording are Congress.gov's action record; the timeline shows status changes, not every procedural step.

Money around this bill

1 lobbying clients named this bill on 1 disclosure filings across 1 quarter, Jun 2026 to Jun 2026. Those filings disclosed $2,760,000 in lobbying spend. A filing names 31 bills on average, so that figure is what each filing reported, not a share belonging to this bill.

More lobbying clients named this bill than 0% of bills with at least one filing.

Mike Crapo, the sponsor, reported $552,275 in PAC receipts in the 2026 cycle.

• Koch Government Affairs, LLC — $2,760,000 on 1 filing

Lobbying Disclosure Act filings through Jul 20, 2026. A filing shows who paid to lobby on a bill it names, not what changed.