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U.S. Court of Appeals for the Tenth Circuit
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U.S. Chamber files amicus brief urging Tenth Circuit to reverse decision that vacated critical Clean Water Act (CWA) permit issued by Army Corps of Engineers and enjoined reservoir expansion project benefiting millions of Colorado residents
January 23, 2026
The Chamber's brief argues that in reviewing the Army Corps’ decision, the district court exceeded its proper role under the National Environmental Policy Act, misread the Corps’ CWA regulations, and improperly granted an eleventh-hour request for an injunction.
Jeremy C. Marwell and Adam Kleven of Vinson & Elkins LLP served as outside counsel.