Supreme Court of the United States / October Term 2023

Diaz v. United States

Decided June 20, 2024. Clarence Thomas delivered the opinion of the Court.

Docket 23-14 · 602 U.S. 526 · Cited 18 times

Holding

Expert testimony that “most people” in a group have a particular mental state is not an opinion about “the defendant” and thus does not violate Federal Rule of Evidence 704(b).

The Court’s statement of the holding, from the opinion’s syllabus. The syllabus is prepared by the Reporter of Decisions and is not part of the opinion of the Court — read the official opinion for authority.

Official text

Read the official opinion (PDF, supremecourt.gov) (opens primary source in a new tab)

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Clarence Thomas’s profile · All opinions since October Term 2017 · The Supreme Court

Source: Supreme Court of the United States, slip opinions (2024). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-07-02. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).