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New facts in federal review

Cullen v. Scott Lynn Pinholster

Updated Oct 18, 2026

In brief

The Supreme Court overturned the Ninth Circuit’s ruling and said Pinholster was not entitled to federal relief based on the state-court record.

Where it stands
Decided

Decided 8-1 · April 4, 2011 · Opinion by Justice Breyer

What it’s about
Scott Pinholster challenged his California conviction and death sentence in federal court, arguing his trial lawyers failed to provide effective legal help; a federal district court granted relief after hearing new evidence.
Who it affects
Pinholster could not keep the federal relief a lower court had granted; the Supreme Court said he was not entitled to relief on the state-court record.

Summary: written with AI from the case record.

Illustration for Vincent Cullen, Acting Warden v. Scott Lynn Pinholster
Conceptual illustration · AI-generated

What it's about

The Supreme Court overturned the Ninth Circuit’s ruling, deciding Pinholster was not entitled to relief based on the record before the state court.

Pinholster challenged his California conviction and death sentence, saying his trial lawyers did not provide effective legal help. A federal district court granted relief after hearing new evidence.

The Antiterrorism and Effective Death Penalty Act sets rules for federal court review of state prisoners’ claims.

Question presented

Can a federal court overturn a state criminal conviction on the basis of facts the defendant could have alleged, but did not, in state court?

What the Court decided

Holding

On the record before the state court, Pinholster was not entitled to federal habeas relief. Pp. 14‘–31. 590 F. 3d 651, reversed.

Result
Reversed

The Court's reasoning

The Court considered Pinholster’s request for federal relief based on the record before the state court and concluded he was not entitled to relief.

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 8joined the Court's opinion
  1. Breyerwrote the opinion
  2. Kagan
  3. Thomasalso wrote separately
  4. Scalia
  5. Kennedy
  6. Ginsburg
  7. Roberts
  8. Alitoalso wrote separately
Dissenting · 1disagreed with the result
  1. Sotomayorwrote the dissent
8 justices joined the judgment, 1 dissented.

From the opinions

“Some habeas petitioners are unable to develop the factual basis of their claims in state court through no fault of their own.”

— Justice Sotomayor(dissent)

What's next

The Supreme Court’s ruling ends its review of Pinholster’s federal claim and leaves him without relief based on the state-court record.

Documents

2

Opinions

  • Cullen

    Thomas, Roberts, Scalia, Kennedy, Alito, Breyer, Ginsburg, Kagan, Sotomayor

Audio

View the full docket on supremecourt.gov

Docket activity

10
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Oct 18, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Oct 18, 2026 · Generated

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  • 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

  • Audio Recording added: Oral Arguments - Cullen

    Oct 30, 2014 · Court records

  • Opinion added: Cullen

    Apr 4, 2011 · 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