October Term 2003 · Docket 02-1060

Does the Fourth Amendment ban checkpoints that seek witnesses to a specific crime?

Illinois argues its witness checkpoint is legal. Lidster claims it violates the Fourth Amendment.

Official caption
Illinois v. Lidster
Latest argument session
Latest official Court activity
Latest verified event
Argued
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Official Transcript

Verified source milestones

  1. — An official oral-argument transcript was verified.
  2. — An official oral-argument transcript was verified.

The arguments, in order

This case may have been argued more than once. Each entry below uses that session's official transcript. Later arguments do not erase earlier ones.

  1. Argument 1 ·

    What happened at the argument

    Gary Feinerman argued the checkpoint was designed to find witnesses to a specific crime.

    Feinerman asked if the checkpoint is per se invalid or governed by a balancing test.

    Feinerman noted that narcotics checkpoints were found invalid in a previous case.

    Ramsell argued that mass suspicionless seizures violate the Fourth Amendment without exigent circumstances.

    Read the official transcript for this argument · Official argument details

    Sources used for this argument breakdown

A citizen's guide to the whole case

What this case is about

The Court must decide if a checkpoint seeking witnesses to a known crime is valid.

Official sources for this section

How the case got here

The Supreme Court heard oral argument in this case on November 5, 2003.

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What each side wants

Illinois wants the Court to uphold the checkpoint as a valid law enforcement tool.

Lidster wants the Court to strike down the checkpoint as an unconstitutional seizure.

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What each side says

Illinois argues the checkpoint is valid because it targets a specific known crime.

Lidster argues the checkpoint is invalid because it seizes people without individual suspicion.

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What the justices asked

Chief Justice Rehnquist asked if the case was submitted after the arguments concluded.

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Why it matters

This case defines the limits of police power to stop drivers for witness information. It shapes how states investigate hit-and-run accidents and other crimes. The outcome affects daily driving rights and public safety efforts.

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What happens next

This article currently covers the argument record. Use the official docket link for later case activity.

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Official Court provenance

Official docket and case history · Official Supreme Court oral-argument detail page

Title and summary sources

Revision history

  1. Revision 1 · Official Transcript ·

    Correction: Rewritten to the concise citizen-facing editorial standard.

  2. Revision 2 · Official Transcript ·

    Correction: Migrated to the dated official Court activity contract without model use.

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