October Term 2013 · Docket 12-1146

Does the Clean Air Act force EPA to regulate greenhouse gases from stationary sources?

the sides that brought the case argue the statute does not cover greenhouse gases. EPA argues the law requires regulation.

Official caption
Utility Air Regulatory Group v. EPA
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

    Keisler argued the situation is unprecedented.

    Verrilli argued EPA is managing a transition.

    Mitchell noted both sides agree on two issues.

    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 case tests whether the Clean Air Act mandates greenhouse gas regulation.

Official sources for this section

How the case got here

The Supreme Court heard oral argument in this case on February 24, 2014.

Official sources for this section

What each side wants

the sides that brought the case want the Court to reject EPA's greenhouse gas rules.

EPA wants the Court to uphold its regulatory authority.

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What each side says

the sides that brought the case argue the statute does not cover greenhouse gases.

EPA argues the statute requires regulating these pollutants.

Official sources for this section

What the justices asked

Justice Kagan asked how the phrase any air pollutant applies.

Justice Sotomayor asked why the agency should receive deference.

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Why it matters

The outcome determines whether factories must cut emissions. It shapes national climate policy. It affects industrial compliance costs.

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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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