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Pierce v. California

Updated Sep 20, 2026

In brief

The Supreme Court refused to hear Pierce's petition (denied review), so it did not decide whether California's DNA collection and keeping are allowed under the Fourth Amendment.

Where it stands
Decided

Decided · May 4, 2020

What it’s about
Pierce v. California is a case appealed from the Supreme Court of California to the U.S.
Who it affects
The refusal left unanswered whether California may collect DNA from people arrested for a felony before conviction or keep it from people never charged or convicted.

Summary: written with AI from the case record.

Illustration for Pierce v. California
Conceptual illustration · AI-generated

What it's about

Supreme Court. The petitioner filed for a writ of certiorari and requested to proceed without paying court fees.

The case came from California's highest court, and Pierce asked to proceed without paying court fees.

Question presented

1. Does the Fourth Amendment permit the suspicionless collection and profiling of DNA from persons who have been arrested for, but not yet convicted of, a felony? 2. Does the Fourth Amendment permit the indefinite retention of DNA profiles and samples from persons who are never charged with or convicted of a crime?

What the Court decided

Holding

Petition DENIED.

What's next

The Supreme Court has finished this docket action. No further Supreme Court proceeding is stated for this case.

Documents

2

Docket activity

22
  • New analysis added

    Sep 20, 2026 · Court records

  • AI analysis generated: Case Briefing

    Sep 20, 2026 · Generated

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    Sep 20, 2026 · Court records

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    Sep 20, 2026 · Court records

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    Sep 19, 2026 · Court records

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    Sep 19, 2026 · Court records

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    Sep 19, 2026 · Court records

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    Sep 19, 2026 · Court records

Older entries are on the full docket.

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 Sep 20, 2026Methodology

Court records and filings

Reporting and analysis