News & Analysis as of

Hazardous Substances Clean Air Act Chevron Deference

Williams Mullen

Environmental Notes - July 2025

Williams Mullen on

Is the Once in, Always in Policy Finally Dead? EPA’s controversial “Once in, always in, Rule” (Once in Rule) was recently rescinded under the Congressional Review Act, a statute which gives Congress the authority to...more

Ballard Spahr LLP

Supreme Court: EPA Must Consider Costs in Power Plant Rule

Ballard Spahr LLP on

The U.S. Supreme Court issued its opinion in Michigan v. EPA, reversing a ruling by the U.S. Court of Appeals for the District of Columbia Circuit and holding that the U.S. Environmental Protection Agency (EPA) must consider...more

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