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McWilliams v. Dunn

Updated Oct 27, 2026

In brief

The Supreme Court ruled that Alabama courts wrongly found McWilliams got all the help Ake required under federal law that was already clear.

Where it stands
Decided

Decided 5-4 · June 19, 2017 · Opinion by Justice Breyer

What it’s about
James McWilliams argued that Alabama failed to provide the mental-health expert help required by the Supreme Court’s earlier decision in Ake v. Oklahoma.
Who it affects
The ruling rejects Alabama's finding about the assistance McWilliams received, but does not state what relief he received.

Summary: written with AI from the case record.

Illustration for McWilliams v. Dunn
Conceptual illustration · AI-generated

What it's about

The Supreme Court ruled that the Alabama courts’ finding that he received all the help Ake required went against, or unreasonably applied, clearly established federal law.

McWilliams's Alabama death-penalty defense relied on mental-health evidence linked to multiple head injuries. The appointed expert reported to the court and both sides two days before sentencing; counsel had no chance to consult him, and records came at the hearing.

Ake v. Oklahoma says an indigent defendant must receive meaningful expert help when mental health is important to the case.

Question presented

When this Court held in Ake that an indigent defendant is entitled to meaningful expert assistance for the "evaluation, preparation, and presentation of the defense,” did it clearly establish that the expert should be independent of the prosecution?

What the Court decided

Holding

The Alabama courts’ determination that McWilliams received all the assistance to which Ake entitled him was contrary to, or an unreasonable application of, clearly established federal law.

The Court's reasoning

The Court applied Ake's requirement of meaningful expert help and concluded that Alabama courts' finding that McWilliams received all required assistance conflicted with, or unreasonably applied, federal law that was already clear.

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 5joined the Court's opinion
  1. Breyerwrote the opinion
  2. Kagan
  3. Kennedy
  4. Ginsburg
  5. Sotomayor
Dissenting · 4disagreed with the result
  1. Thomas
  2. Roberts
  3. Gorsuch
  4. Alitowrote the dissent
5 justices joined the judgment, 4 dissented.

From the opinions

“Ake did not clearly establish that a defendant is entitled to an expert who is a member of the defense team.”

— Justice Alito(dissent)

What's next

The decision does not identify a further step for Alabama courts or say what relief McWilliams ultimately received.

Documents

1

Docket activity

6
  • New analysis added

    Oct 27, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 27, 2026 · Generated

  • AI analysis generated: Decision Record

    Oct 27, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 27, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 18, 2026 · Court records

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  • Brief added: Questions Presented

    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 27, 2026Methodology

Court records and filings

Reporting and analysis