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Loper Bright Enterprises v. Raimondo

Updated Sep 5, 2026

In brief

Courts, not agencies, must use their own judgment to interpret federal statutes in challenges to agency actions.

Where it stands
Decided

Decided 6-2 · June 28, 2024 · Opinion by Chief Justice Roberts

What it’s about
Commercial fishing companies challenged a federal rule requiring them to help fund onboard monitoring, using the case to attack Chevron deference.
Who it affects
Federal agencies can no longer receive deference from courts simply because a law is ambiguous. Businesses, including fishing vessels facing monitoring costs, can press courts to independently review an agency’s reading of a statute.

Summary: written with AI from the case record.

Illustration for Loper Bright Enterprises v. Raimondo
Conceptual illustration · AI-generated

What it's about

The Court overruled Chevron, held courts must exercise independent judgment on legal questions under the APA, and vacated the D.C. Circuit's judgment.

The decision ends a major legal framework that had guided how courts reviewed federal agencies’ interpretations of laws.

Question presented

1. Does the Magnuson-Stevens Act authorize the National Marine Fisheries Service to promulgate a rule that would require industry to pay for at-sea monitoring programs? 2. Should the Court overrule Chevron v. Natural Resources Defense Council or at least clarify whether statutory silence on controversial powers creates an ambiguity requiring deference to the agency?

What the Court decided

Holding

The Administrative Procedure Act requires courts to exercise their independent judgment in deciding whether an agency has acted within its statutory authority, and courts may not defer to an agency interpretation of the law simply because a statute is ambiguous; Chevron is overruled. No. 22–451, 45 F. 4th 359 &

Result
Vacated

The vote

  • Joined the judgment
  • Concurred in a separate opinion
  • Dissented
  • Wrote an opinion
Majority · 4joined the Court's opinion
  1. Robertswrote the opinion
  2. Alito
  3. Kavanaugh
  4. Barrett
Concurring · 2agreed with the result, wrote separately
  1. Thomaswrote separately
  2. Gorsuchwrote separately
Dissenting · 2disagreed with the result
  1. Sotomayor
  2. Kaganwrote the dissent
6 justices joined the judgment (2 writing separately), 2 dissented.

From the opinions

“Courts may not defer to an agency interpretation of the law simply because a statute is ambiguous.”

— Chief Justice John G. Roberts, Jr.(majority)

What's next

The case returns to the D.C. Circuit for further proceedings under the Court’s new standard. Lower courts will apply independent review in agency cases, while agencies and regulated parties adjust to the end of Chevron deference.

Documents

3

Docket activity

11
  • New analysis added

    Sep 5, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Sep 5, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Sep 5, 2026 · Generated

  • AI analysis generated: Decision Record

    Sep 5, 2026 · Generated

  • New analysis added

    Sep 5, 2026 · Court records

Show 6 more
  • AI analysis generated: Case Briefing

    Sep 5, 2026 · Generated

  • Status changed from null to decided

    Mar 8, 2026 · Court records

  • Status changed from decided to null

    Mar 8, 2026 · Court records

  • Opinion added: opinion

    Jun 28, 2024 · Court records

  • Brief added: Petition

    Nov 10, 2022 · Court records

  • Brief added: Questions Presented

    Court records

More questions

3
What did the Supreme Court rule in Loper Bright?
The Court overruled Chevron and required courts to independently decide whether an agency acted within its legal authority. It vacated the D.C. Circuit’s judgment.
How will Loper Bright affect federal agencies?
Agencies cannot rely on statutory ambiguity alone to win deference in court. Regulated businesses can seek independent judicial review of agency interpretations.
What happens next in Loper Bright?
The D.C. Circuit will reconsider the dispute under the new rule. Courts nationwide will apply independent judgment in future agency cases.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Sep 5, 2026Methodology

Court records and filings

Reporting and analysis