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.
Summary
Sen. Lee introduced S4931 to amend the Clean Air Act, limiting EPA's ability to regulate vehicle emissions and power plants. The bill is in early stage with low near-term passage probability, but signals potential regulatory relief for traditional automakers and fossil fuel utilities.
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Key Takeaways
- 1.S4931 proposes regulatory relief for ICE automakers and fossil fuel utilities by limiting EPA Clean Air Act authority.
- 2.The bill is in early stage (referred to committee) with low passage probability in a divided Congress.
- 3.Winners: $F, $GM, $DUK, $AEP, $XOM; Losers: $TSLA.
- 4.No direct funding; market impact is solely through relaxed compliance requirements.
Market Implications
If S4931 gains traction, traditional automakers $F and $GM could see 5-10% upside from reduced EV compliance costs, while coal-heavy utilities $DUK and $AEP benefit from extended plant life. Tesla $TSLA faces headwinds from slowing EV adoption and lost regulatory credit revenue, estimated at 5-8% of revenue. Given the early stage, these moves are unlikely until committee markup, currently not scheduled.
⚡ Government Convergence
Active government convergence in this signal’s sector right now.
Over the last 90 days, 188 separate government actions have converged on Grid / Transmission Buildout. What that means: federal dollars are already moving — agencies are soliciting bids and awarding contracts, not just talking, and legislation and executive action are building the policy and funding tailwind behind it. When independent channels move together like this — 149 procurement notices, 26 federal contracts, 7 bills, 5 patents and 1 executive actions — it's the clearest early tell that Washington is committing to grid / transmission buildout, the kind of build-up that reshapes the sector well before it's obvious in the headlines.
Converging government actions
- ContractPOTOMAC ELECTRIC POWER CO: $117M Department of Health and Human Services Contract · 2024-09-26
- BillSMARTER Act · 2025-02-07
- BillCIRCUIT Act · 2025-06-25
- BillPROTECT the Grid Act · 2026-01-23
- Executive actionPresidential Memorandum: Presidential Determination Pursuant to Section 303 of the Defense Production Act of 1950, as Amended, on Grid Infrastructure, Equipment, and Supply Chain Capacity · 2026-04-20
- Procurement noticeY--Sidney Substation Breaker Replacement · 2026-05-04
- Procurement noticeY--North Gunnison Substation 115kV Switch Installation · 2026-05-04
- Procurement noticeSources Sought - Transformer Refurbishment for WAPA Tracy Substation (Byron, CA) · 2026-05-05
- Procurement noticeY--Carpenter Substation Stage 03 South Dakota · 2026-05-11
- Procurement noticeAnnual Transformer Oil Sampling and Analysis Contract. · 2026-05-11
- Procurement noticeENVIRONMENTAL ASSESSMENT FOR REPAIR OF OVERHEAD 70kV TRANSMISSION LINE South Loop 2 VSFB, CA · 2026-06-15
- Procurement notice59--TRANSFORMER,POWER · 2026-09-23
- Procurement notice59--TRANSFORMER,POWER AUTO · 2026-09-23
- Procurement notice1000 KVA TRANSFORMER · 2026-09-23
Full Analysis
On June 24, 2026, Sen. Mike Lee (R-UT) introduced S4931, a bill to amend the Clean Air Act to preserve consumer vehicle choice and protect the electric grid by imposing limits on EPA regulations. The bill was read twice and referred to the Committee on Environment and Public Works, where it awaits markup. No companion bill has been introduced in the House. The bill does not authorize or appropriate any funding; its market impact stems solely from regulatory relaxation. If enacted, the bill would restrict EPA's ability to set stringent vehicle emissions standards and power plant rules, reducing compliance costs for internal combustion engine (ICE) automakers and coal/gas utilities. Conversely, electric vehicle (EV) makers like Tesla lose regulatory tailwinds and credit revenue. Due to the early legislative stage—referred to committee, no hearings scheduled—passage is uncertain. The 119th Congress is divided, with a Republican-majority House and Democratic Senate, making significant Clean Air Act amendments unlikely. Key beneficiaries include Ford ($F) and GM ($GM), which rely on ICE vehicle sales and face heavy EV compliance costs, and utilities like Duke Energy ($DUK) and American Electric Power ($AEP) with large fossil fuel fleets. Oil major ExxonMobil also benefits from sustained fuel demand. Tesla ($TSLA) is the primary loser, facing reduced EV adoption pressure and regulatory credit sales. The timeline for S4931 is extended; committee hearings may occur in late 2026, but floor action is improbable before the 2026 midterms. Investors should view this as a speculative signal of regulatory rollback, not a near-term catalyst.
Intelligence Surface
Cross-referenced against federal contracts, SEC insider filings & congressional trade disclosures
Some confirming evidence found across public data sources
What the bill does
Relaxation of EPA vehicle emissions standards under the Clean Air Act
Who must act
Automobile manufacturers subject to EPA light-duty vehicle greenhouse gas standards
What happens
Reduced compliance costs from avoiding expensive electric vehicle and hybrid production requirements; extended ability to sell internal combustion engine vehicles
Stock impact
Ford's product portfolio is heavily reliant on high-margin ICE pickups and SUVs (F-150, Explorer); relaxed standards allow Ford to continue selling these without incurring penalties or forced EV transition costs
What the bill does
Relaxation of EPA vehicle emissions standards under the Clean Air Act
Who must act
Automobile manufacturers subject to EPA light-duty vehicle greenhouse gas standards
What happens
Reduced compliance costs from avoiding expensive electric vehicle and hybrid production requirements; extended ability to sell internal combustion engine vehicles
Stock impact
GM's revenue from ICE trucks and SUVs (Silverado, Tahoe) is substantial; relaxed standards reduce pressure to accelerate EV production, preserving profitability from legacy vehicle sales
Key Legislators
Connected Signals
Matched on shared policy language across AI analyses, with ticker & timing weight
Presidential Memorandum: Presidential Determination Pursuant to Section 303 of the Defense Production Act of 1950, as Amended, on Grid Infrastructure, Equipment, and Supply Chain Capacity
PACIFICORP: $287M Department of Energy Grant
NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY: $147M Department of Energy Grant
UNION ELECTRIC COMPANY: $109M Department of Energy Grant
ENTERGY NEW ORLEANS, LLC: $124M Department of Energy Grant
POTOMAC ELECTRIC POWER CO: $118M Department of Health and Human Services Contract
PACIFICORP: $122M Department of Energy Grant
DEPARTMENT OF CONSERVATION AND ENERGY, STATE OF LOUISIANA: $493M Department of Energy Grant
Related Presidential Actions
Executive orders & memoranda affecting the same sectors or companies
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Reinvigorating America's Hunting Heritage
This executive order directs multiple federal agencies (Interior, Agriculture, Labor, Education, Veterans Affairs, Commerce, and the Secretary of War) to expand hunting and fishing access on federal lands, including opening specific national monuments to hunting, allowing traditional lead ammunition, promoting hunting education in schools, encouraging Sunday hunting on state and federal lands, and facilitating wild game donation programs. It aims to reverse restrictions on access and cultivate a new generation of hunters through policy changes and funding guidance.
Excluding Certain Canadian Alcoholic Beverages from Importation into the United States in Response to Continued Discrimination Against the Commerce of the United States with Respect to Alcoholic Beverages
President Trump, invoking Section 338 of the Tariff Act of 1930, orders an import ban on certain Canadian alcoholic beverages effective September 29, 2026, escalating previous 50% ad valorem duties. This action targets Canadian discrimination against U.S. alcoholic beverages, citing Canada's broken commitments and additional retaliation. The ban replaces the tariff for specified products with a complete exclusion from entry into the United States.
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