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Changing a plea deal

Kernan v. Michael Daniel Cuero

Updated Oct 18, 2026

In brief

The Supreme Court overturned the Ninth Circuit's ruling and returned Cuero's case to that court.

Where it stands
Decided

Decided 9-0 · November 6, 2017 · Opinion by Justice Curiam

What it’s about
The Supreme Court overturned the Ninth Circuit and sent the case back to the lower court (remanded), ruling that its earlier decisions did not clearly establish that a state court must impose the lower sentence Cuero expected under his plea deal in a federal challenge to his state sentence.
Who it affects
The order sends Cuero's challenge to his California sentence back to the Ninth Circuit for another look.

Summary: written with AI from the case record.

Illustration for Scott Kernan, Secretary, California Department of Corrections and Rehabilitation, Petitioner v. Michael Daniel Cuero
Conceptual illustration · AI-generated

What it's about

The dispute followed California’s change to the charges to seek a higher sentence and Cuero’s request for the lower sentence.

California changed its complaint to seek a higher sentence than Cuero expected under his plea deal; Cuero sought the lower sentence.

Cuero challenged his state sentence in federal court, raising whether his plea deal required the state court to impose the lower sentence.

Question presented

Is it “clearly established” federal law that a state court must impose a lower sentence that the parties originally agreed upon, rather allowing the state to amend its complaint to seek a higher sentence and the defendant to withdraw his guilty plea—such that a federal appeals court sitting in habeas proceedings can set aside the sentence of a state court for not applying that law?

What the Court decided

Holding

Petition for certiorari GRANTED, Judgment REVERSED and case REMANDED. Opinion per curiam. (Detached Opinion ).

Result
Reversed

The vote

  • Joined the judgment
Majority · 9joined the Court's opinion
  1. Breyer
  2. Kagan
  3. Thomas
  4. Kennedy
  5. Ginsburg
  6. Sotomayor
  7. Roberts
  8. Gorsuch
  9. Alito
9 justices joined the judgment.

What's next

The Ninth Circuit will consider Cuero's case again. The disposition does not specify what result it must reach.

Documents

2

Docket activity

7
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 18, 2026 · Court records

Show 2 more
  • Opinion added: Kernan

    Nov 6, 2017 · Court records

  • Opinion added: Opinion

    Nov 6, 2017 · Court records

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 Oct 18, 2026Methodology

Court records and filings

Reporting and analysis