October Term 2003 · Docket 02-1343

Can states ban specific car models?

Car makers argue federal law blocks state vehicle bans. California officials claim local rules fit within federal limits.

Official caption
Engine Mfrs. Assn. v. South Coast Air Quality Management Dist.
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

    Mr. Phillips cited the 1967 Clean Air Act.

    Mr. Olson warned of a patchwork of state rules.

    Chief Justice Rehnquist closed the argument session.

    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

This case tests state power over vehicle sales. the sides that brought the case seek a federal preemption ruling. the opposing sides defend their local emission rules.

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How the case got here

The Supreme Court heard oral argument in this case on January 14, 2004.

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What each side wants

the sides that brought the case want the Court to strike down the state rules.

the opposing sides want the Court to keep the state rules valid.

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What each side says

the sides that brought the case argue federal law preempts state vehicle bans.

the opposing sides argue their rules fit within federal law.

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What the justices asked

Does federal law block state vehicle bans?

Can states set unique vehicle standards?

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Why it matters

This dispute shapes state control over car sales. It defines the boundary between federal and state power. It affects how states manage air quality.

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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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