Michigan v. EPA (2015)

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Multiple states intervened in lawsuit to defend EPA standards regulating mercury and other air pollutants from the power sector.

Citation: Michigan v. EPA, 135 S.Ct. 2699 (2015)

Topic: Air Pollution

Type of action: Defense of Federal Standards

States involved: California, Connecticut, Delaware, District of Columbia, Illinois, Iowa, Maryland, Massachusetts, Minnesota, New Hampshire, New Mexico, New York, North Carolina, Rhode Island, Vermont

Summary: After industry groups challenged EPA standards regulating mercury and other air pollutants, state and local governments intervened in support of the rule. Though the D.C. Circuit upheld the standards, the Supreme Court reversed, finding that the EPA had impermissibly failed to consider costs in setting the standards.

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