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BySRSam Reyes·CMCal Morrow·EQEliza Quinn·DPDana Park
ANALYSISApril 13, 2026

Does the EPA have too much regulatory authority?

On February 12, 2026, the EPA under Administrator Lee Zeldin rescinded its 2009 Greenhouse Gas Endangerment Finding — the legal foundation for most federal climate regulation since 2010 — describing the action as the 'single largest deregulatory action in U.S. history.' Environmental groups including the Sierra Club, American Lung Association, and NRDC immediately filed suit in the D.C. Circuit Court of Appeals challenging the rescission as illegal. This action is the culmination of a broader Trump administration deregulatory agenda announced in March 2025 that targeted more than 30 environmental regulations.

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When Congress wrote vague environmental laws, did it hand the EPA a blank check to reshape American industry — or just the tools to do a necessary job? The fight over who really gets to set the rules for clean air and water is a fight over who governs America.

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Congressional authorization versus agency inference
Conservative
Massachusetts v. EPA told the agency it could regulate greenhouse gases — it did not authorize EPA to restructure the entire American energy economy through a single administrative finding that no Congress ever explicitly voted for. There is a meaningful difference between regulatory authority and regulatory supremacy. West Virginia v. EPA drew exactly that line in 2022, and Loper Bright finished the job in 2024.
Liberal
The conservative framing treats the Endangerment Finding as bureaucratic overreach, but it was the opposite: the Supreme Court in Massachusetts v. EPA compelled the agency to make this determination. EPA didn't invent new authority — it fulfilled a judicial obligation. Rescinding the Finding doesn't restore congressional primacy; it uses executive discretion to nullify a scientific conclusion the Court itself mandated.
Conservative
Being compelled to determine whether a substance endangers public health is not the same as being authorized to use that determination as the legal trigger for every major climate regulation across sixteen years and multiple administrations. The Court handed EPA an obligation; EPA converted it into a governing framework Congress never approved.
Liberal
That conversion happened because Congress refused to legislate — for sixteen years the regulatory structure held precisely because no majority could agree on a replacement. The 'administrative overreach' conservatives condemn was filling a vacuum Congress chose to leave open.
Democratic legitimacy of EPA climate governance
Conservative
Twenty-five states intervened in defense of the rescission, representing tens of millions of people who never consented to having their energy economy governed by a four-person agency leadership team answerable to a single president. Democratic legitimacy is not a technicality — it is the load-bearing wall of the constitutional structure, and an administrative workaround is not a substitute for a law.
Liberal
The 25-state headcount cuts both ways: there are also states and millions of people who consented to and depend on the regulatory structure being dismantled. More importantly, the conservative argument that unelected administrators shouldn't bind the economy is being advanced by an administration using executive authority alone to dismantle a scientifically compelled finding — that's not a defense of democratic limits, it's an exercise of the same unchecked power conservatives claim to fear.
Conservative
Dismantling a regulation requires the same executive authority that created it — the asymmetry liberals are pointing to is inherent in the administrative state they built. The difference is that rescission pushes the question back to Congress, where it belongs; the original Finding locked it into agency jurisdiction indefinitely.
Liberal
Pushing the question to a Congress that has failed to act for sixteen years isn't returning power to the people — it's returning it to a body that has repeatedly chosen paralysis, while the atmospheric damage the EPA's own analysis quantifies continues accumulating in the meantime.
Irreversibility asymmetry of emissions deregulation
Conservative
The EPA's own analysis projects 123 million tons in additional annual emissions and $23 billion in damages by 2035 — and the conservative framework has to honestly reckon with that number rather than wave it away. But the instability was baked into a regulatory structure built on a single agency finding: one election could always erase it all, which is exactly what happened. The fragility caused this crisis, not the rescission.
Liberal
Saying 'the foundation was always fragile' does not make the collapse costless. The conservative concession that those damage projections are real is the most important thing in this debate, because greenhouse gas accumulation doesn't reverse on the same timeline as a rulemaking — you cannot deregulate and then re-regulate your way back from cumulative atmospheric loading. That asymmetry makes this categorically different from ordinary regulatory pendulum swings.
Conservative
The irreversibility argument is actually the strongest case for forcing congressional action now rather than defending a structure that already proved it couldn't survive a change in administration. If the stakes are this severe, the answer is a durable law — not preserving the workaround that just failed.
Liberal
That logic would be compelling if Congress were poised to act, but 'this crisis should force legislation' has been the argument for twenty years and it hasn't worked once. Closing the administrative path while waiting for a legislative breakthrough that has never materialized is not a strategy — it's a gamble with irreversible consequences.
APA arbitrary-and-capricious review survival
Conservative
The litigation will return to the courts, and the trajectory is clear: Loper Bright stripped courts of any obligation to defer to agency interpretations, and West Virginia required explicit congressional authorization for major economic interventions. A Endangerment Finding issued by one administration, never confirmed by Congress, was always legally precarious — the courts are simply completing a correction that was overdue.
Liberal
The conservative account of the litigation trajectory ignores the specific legal problem the rescission creates for itself: the EPA's own impact analysis documenting $23 billion in annual damages is now in the administrative record. An agency that acknowledges specific quantified harm and proceeds anyway must explain why under arbitrary-and-capricious review — and 'we want less regulation' has never been a sufficient legal rationale. That's the ground on which this rescission is most vulnerable.
Conservative
Agencies reverse cost-benefit determinations all the time when administrations change — that is ordinary APA practice. The liberal argument that documented harm forecloses rescission would mean no deregulatory action could ever survive judicial review once a prior administration quantified costs, which would effectively end the administrative pendulum entirely.
Liberal
The ordinary APA practice of reversing cost-benefit determinations requires a reasoned explanation for why the agency now weighs costs differently — and 'the prior administration overstated them' is different from 'we acknowledge these costs and are proceeding anyway.' The EPA's own numbers are what make this rescission's explanation so difficult to write.
Congress's sixteen-year legislative abdication
Conservative
The real failure here is not the rescission — it is Congress's sixteen-year abdication of its responsibility to legislate on climate. If the stakes are as high as climate advocates say, and they may be, the answer is to elect a Congress that will pass a law, not to preserve an administrative workaround that was always one election cycle from reversal. The constitutional correction and the climate emergency are not in conflict; the first one forces the second.
Liberal
The conservative position honestly identifies Congress's failure, then treats it as an argument for rescission rather than against it. But if Congress has refused to act for sixteen years with EPA authority in place, what theory of political pressure produces legislative action once that authority is gone? Removing the regulatory floor doesn't create urgency — it removes the consequence that was keeping the issue alive.
Conservative
The EPA's regulatory umbrella gave Congress a comfortable evasion: legislators could avoid a hard vote knowing the agency was handling it. Closing that escape hatch is precisely how you force the accountability that a democracy requires on questions of this magnitude.
Liberal
That theory assumes the same Congress that avoided a hard vote for sixteen years will suddenly find courage when the political cost of inaction becomes atmospheric rather than administrative — but the families in asthma corridors and coastal flood zones don't have sixteen more years to wait for that theory to be tested.
Conservative's hardest question
The EPA's own analysis projects $23 billion in annual damages by 2035 from the rescission's downstream effects, and dismissing those cost models as uncertain does not make the underlying physical risks disappear. If Congress continues to fail to legislate and the courts permanently foreclose EPA climate authority, there is no fallback mechanism — which means the constitutional correction may impose real-world costs that no subsequent administration can undo.
Liberal's hardest question
The strongest challenge to this argument is that West Virginia v. EPA and Loper Bright together represent a genuine constitutional correction, not just policy preference — if Congress genuinely never explicitly authorized economy-wide climate regulation under the Clean Air Act, then even a liberal framework committed to democratic legitimacy should require Congress to act rather than rely on agency inference. That is difficult to dismiss, and it means the liberal position ultimately depends on Congress passing explicit climate legislation, which has failed repeatedly.
The Verdict
Both sides agree
Both sides accept that the EPA's own regulatory impact analysis — projecting 123 million tons of additional annual emissions and $23 billion in damages by 2035 — represents real projected costs, not fabricated numbers to be dismissed.
The real conflict
They disagree on a factual-legal question about the nature of the 2009 Endangerment Finding: conservatives frame it as an agency power grab using statutory ambiguity, while liberals frame it as compliance with a judicial mandate from Massachusetts v. EPA — these are incompatible characterizations of the same administrative act.
What nobody has answered
If the Endangerment Finding was issued under judicial compulsion from Massachusetts v. EPA, can an executive agency legally rescind a finding it was ordered to make — and if it cannot, what body actually has authority to undo it, given that Congress never touched it in either direction?
Sources
  • West Virginia v. EPA, 597 U.S. 697 (2022) — Supreme Court majority opinion
  • Loper Bright Enterprises v. Raimondo, 603 U.S. 369 (2024) — Supreme Court majority opinion
  • EPA Federal Register notice of Endangerment Finding rescission, February 12, 2026
  • EPA March 2025 deregulatory agenda announcement under Administrator Lee Zeldin
  • D.C. Circuit Court of Appeals — petition filed by Center for Biological Diversity, Sierra Club, American Lung Association, NRDC
  • March 6, 2026 motion to intervene filed by 25 states led by West Virginia and Kentucky
  • Harvard Salata Institute commentary on Endangerment Finding rescission
  • Edison Electric Institute (EEI) statements on EPA climate authority
  • EPA regulatory impact analysis projecting 123 million ton emissions increase and $23 billion in annual damages by 2035

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