Clean Air Interstate Rule

News & Analysis as of

The Supreme Court Upholds EPA’s Cross-State Air Pollution Rule

Decision in EME Homer City upholds CSAPR, but additional legal challenges and EPA revisions may still significantly alter CSAPR and delay its implementation. On Tuesday, April 29, the United States Supreme Court...more

What Makes One Invalid Rule More Valid Than Another? The Court of Appeals Declines to Rehear CSAPR, and Leaves CAIR In Place

Today, the Court of Appeals for the District of Columbia declined EPA’s petition for rehearing en banc in EME Homer City Generation v. EPA, leaving the original panel decision striking down EPA’s Cross-State Air Pollution...more

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