Regulatory Analysis

After Loper Bright: How the End of Chevron Deference Is Widening Federal Regulatory Gaps

By Law Gaps Research — June 2, 2026 — 9 min read

The Supreme Court's 2024 decision in Loper Bright Enterprises v. Raimondo ended forty years of Chevron deference. For regulatory compliance, the consequences are still unfolding — and the regulatory gap landscape has shifted in ways that most organizations have not fully mapped.

The Chevron doctrine — established by Chevron U.S.A., Inc. v. Natural Resources Defense Council (1984) — required courts to defer to a federal agency's reasonable interpretation of an ambiguous statute it administered. For four decades, this gave agencies substantial room to fill statutory gaps through regulation. An ambiguous statute was not a limit on agency authority; it was an invitation. Agencies could interpret their way into new regulatory territory as long as the interpretation was plausible.

Loper Bright changed the doctrine fundamentally. Courts now exercise independent judgment in interpreting statutes, rather than deferring to agency readings. An agency's interpretation of an ambiguous provision is still relevant — courts will consider it — but it is no longer entitled to controlling deference. The question of what the law means is now squarely a judicial question.

That change, combined with the major questions doctrine formalized in West Virginia v. EPA (2022), has produced a compliance environment that is structurally different from the one that preceded it. The gaps it creates are not hypothetical. They are active, and they affect compliance decisions being made right now.

Two Doctrines, One Structural Shift

Understanding the gap requires understanding how the two doctrines interact.

The Major Questions Doctrine (West Virginia v. EPA, 2022)

West Virginia v. EPA, 597 U.S. 697 (2022), held that when an agency seeks to resolve a question of "vast economic and political significance," Congress must have clearly authorized that action. An agency cannot rely on broad or ambiguous statutory language to justify major regulatory initiatives. If Congress has not spoken directly to an issue of major significance, the agency lacks the authority to act on it, regardless of how plausible the statutory reading might be. The EPA's Clean Power Plan — which sought to regulate carbon emissions through system-wide generation-shifting requirements — exceeded the authority Congress had actually granted, the Court held, even though the Clean Air Act's text could be read to support it.

The End of Chevron Deference (Loper Bright v. Raimondo, 2024)

Loper Bright Enterprises v. Raimondo, 603 U.S. 369 (2024), overruled Chevron U.S.A., Inc. v. NRDC, 467 U.S. 837 (1984), by a 6-3 vote. Courts must now exercise their own independent judgment when interpreting ambiguous statutory provisions, rather than deferring to the administering agency's construction. The Administrative Procedure Act, the Court held, always required courts to decide questions of law themselves. The Chevron framework had been a judicially created deviation from that requirement, not a mandate from Congress. The practical result: agency interpretations that previously survived challenge under Chevron's deferential standard must now survive independent judicial scrutiny under a stricter standard.

The combination is significant. Before 2022, an agency could fill a statutory gap by issuing a regulation, and courts would generally defer to a plausible interpretation. After West Virginia v. EPA, major issues require explicit congressional authorization. After Loper Bright, even non-major interpretations no longer receive automatic deference. Agencies are now significantly more constrained in their ability to extend their regulatory reach through interpretation, and existing regulations that relied on broad Chevron deference may be more vulnerable to challenge than they previously appeared.

How Gaps Form in the New Landscape

Regulatory gaps do not only form where no law exists. They also form where the law exists but agency authority to apply it is uncertain. The post-Loper Bright environment creates four categories of gap that are structurally different from what preceded them.

1. Regulations Premised on Chevron Deference

Existing regulations that were promulgated under statutory interpretations that courts accepted based on Chevron deference may now be more vulnerable to legal challenge. An interpretation that survived review under the old deferential standard may not survive independent judicial scrutiny. Organizations operating under such regulations face uncertainty about whether the regulatory framework they rely on will remain stable if challenged — and whether compliance with existing regulations will remain the standard against which their conduct is measured.

2. Emerging Technology Sectors Without Express Statutory Authorization

For activity categories that postdate or fall outside existing statutory frameworks — AI systems, digital assets, novel energy storage technologies — the post-Loper Bright environment means agencies cannot extend their regulatory reach through interpretation alone. The FTC may assert authority over AI platforms; the SEC may assert authority over certain digital assets; the FCC may assert authority over AI-generated communications. Under the old framework, broad statutory language might have supported those assertions. Under the new framework, each assertion is a potential litigation target, and the outcome depends on what Congress actually said rather than what courts would have previously accepted as a plausible agency reading.

3. The Preemption Gap

When federal agencies cannot extend their regulatory authority through interpretation, states will often try to fill the gap. But states can only fill a gap if they are not preempted by federal law — and preemption disputes turn, in part, on whether there is a coherent federal regulatory scheme to be preempted. If a federal agency lacks authority to regulate a domain, the absence of federal regulation in that domain does not automatically authorize state regulation; it creates a contested question about whether states can act without triggering dormant federal preemption claims. The result, in multiple active areas including AI regulation and digital asset oversight, is that both federal and state regulatory authority is disputed simultaneously, with no clear resolution pending.

4. Regulatory Retreat at the Margins

Agencies are responding to the new legal environment by retreating from the edges of their asserted authority. Proposed rulemakings in contested domains are being scaled back, narrowed to clearer statutory ground, or delayed pending the outcome of ongoing litigation in related areas. The practical effect is that activity occurring at the margins of regulatory authority — conduct the agency would previously have regulated through guidance or broad statutory reading — is now in a zone where neither clear regulation nor clear freedom from regulation is the correct description. That ambiguity is a compliance liability.

The AI Regulation Case Study

The gap created by Loper Bright and the major questions doctrine is most visible in AI regulation. Congress has not passed a comprehensive federal AI statute. Multiple agencies — the FTC, EEOC, CFPB, and others — have asserted regulatory authority over AI systems using their existing statutory mandates. Under the Chevron framework, these assertions would have received substantial deference. Under the current framework, each assertion is independently reviewable, and for any assertion that touches a question of major significance, clear congressional authorization is required.

The result is that federal AI regulation in 2026 is a patchwork of guidance documents, enforcement actions, and contested assertions of jurisdiction — without a coherent statutory foundation that any court is required to defer to. States have moved into this gap, enacting AI transparency, accountability, and restrictions legislation. But as we analyzed in our 2026 Regulatory Gap Map, the federal-state preemption question is itself unresolved. The gap compounds: agencies cannot clearly regulate, states try to fill the gap, federal preemption is contested, and neither resolution is authoritative.

For organizations deploying AI systems, this means the compliance picture is not defined by what agencies say it is. It is defined by what courts will ultimately sustain — and that question is not resolved.

What This Means for Compliance Strategy

The post-Loper Bright regulatory gap landscape requires a different analytical approach than the one that worked under Chevron deference. The question is no longer "what has the agency said the regulation means?" It is "what did Congress clearly authorize the agency to regulate, and will a court sustain the agency's interpretation of that authorization?"

For compliance programs built around agency guidance and regulatory interpretations, this means the guidance documents that previously defined the compliance standard are now inputs to a legal analysis rather than conclusions. An agency's interpretation of a contested statutory provision is entitled to respectful consideration but not automatic deference. The organizations that fare best in this environment are the ones that have mapped the statutory authorization underlying each regulatory obligation they operate under — not just the regulatory text, but the congressional act that created the regulatory authority in the first place.

Regulatory gap intelligence — knowing where the authority is genuinely contested, where existing rules may be vulnerable to challenge, and where state regulation is filling a gap that federal courts may later find to be preempted — is no longer a specialist concern. It is a compliance variable.

The content on this site is legal information, not legal advice. It does not create an attorney-client relationship and cannot substitute for consultation with a licensed attorney about your specific situation.

References & Sources

  1. Loper Bright Enterprises v. Raimondo, 603 U.S. 369 (2024) — overruled Chevron U.S.A., Inc. v. Natural Resources Defense Council, 467 U.S. 837 (1984); held that courts must exercise independent judgment on questions of statutory interpretation rather than deferring to agency construction of ambiguous statutes under the APA; 6-3 decision. Source: law.cornell.edu/supremecourt/text/22-451.
  2. West Virginia v. EPA, 597 U.S. 697 (2022) — formalized the major questions doctrine; held that where an agency seeks to resolve a question of vast economic and political significance, clear congressional authorization is required; EPA's Clean Power Plan generation-shifting requirement exceeded Clean Air Act authority. Source: law.cornell.edu/supremecourt/text/20-1530.
  3. Chevron U.S.A., Inc. v. Natural Resources Defense Council, 467 U.S. 837 (1984) — established the two-step Chevron deference framework (step one: whether the statute is clear; step two: whether the agency's interpretation is reasonable); overruled by Loper Bright. Source: law.cornell.edu/wex/chevron_deference.
  4. Administrative Procedure Act, 5 U.S.C. § 706 — the APA provision requiring courts to "decide all relevant questions of law" in reviewing agency action; the statutory basis on which Loper Bright grounded the end of Chevron deference. Source: law.cornell.edu/uscode/text/5/706.
  5. Law Gaps Research, "The 2026 Regulatory Gap Map: Four Zones Where Federal Law Hasn't Caught Up," June 1, 2026 — covers the AI regulation preemption standoff, CLARITY Act crypto jurisdiction gap, FERC data center authority question, and RFA enforcement void as active compliance gaps. Source: lawgaps.com/blog.