Supreme Court of the United States / October Term 2018

Nielsen v. Preap

Decided March 19, 2019. Samuel A. Alito Jr. delivered the opinion of the Court.

Docket 16-1363 · 586 U.S. 392 (2019)

Precedents cited (30) ↓

Holding

The Ninth Circuit’s judgments—that respondents, who are deportable for certain specified crimes, are not subject to 8 U. S. C. §1226(c)(2)’s mandatory-detention requirement because they were not arrested by immigration officials as soon as they were released from jail—are reversed, and the cases are remanded.

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.

How the Justices voted

Decided 5–4.

Majority · 5

Dissenting · 4

“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. The lineup is the syllabus’s disposition of who wrote and joined each opinion. Source: the opinion’s syllabus (supremecourt.gov).

Precedents cited

Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.

Official text

Read the official opinion (PDF, supremecourt.gov)

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Samuel A. Alito Jr.’s profile · All Supreme Court opinions · The Supreme Court

Source: Supreme Court of the United States, slip opinions (2019). Data last verified 2026-08-15. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).