WEST VIRGINIA v. E.P.A.

No. 20-1530, No. 20-1531, No. 20-1778, No. 20-1780.

142 S.Ct. 2587 (2022)

WEST VIRGINIA, et al., Petitioners v. ENVIRONMENTAL PROTECTION AGENCY, et al. The North American Coal Corporation, Petitioner v. Environmental Protection Agency, et al. Westmoreland Mining Holdings LLC, Petitioner v. Environmental Protection Agency, et al. North Dakota, Petitioner v. Environmental Protection Agency, et al.

Supreme Court of United States.

Decided June 30, 2022.


Attorney(s) appearing for the Case

Elizabeth B. Prelogar , Acting Solicitor General Counsel of Record, Bruce S. Gelber , Deputy Assistant Attorney General, Meghan E. Greenfield , Eric G. Hostetler , Benjamin Carlisle Attorneys, Department of Justice, Washington, D.C., for Respondents.

Carroll Wade, McGuffey III , Troutman Pepper, Hamilton Sanders LLP, Atlanta, GA, Timothy L. McHugh , Troutman Pepper, Hamilton Sanders LLP, Richmond, VA, Misha Tseytlin , Counsel of Record, Kevin M. Leroy , Troutman Pepper, Hamilton Sanders LLP, Chicago, IL, for Respondents.

F. William Brownell , Erica N. Peterson , Hunton Andrews, Kurth LLP, Washington, DC, Elbert Lin , Counsel of Record, Hunton Andrews, Kurth LLP, Richmond, VA, for respondent, America's Power.

Patrick Morrisey , Attorney General, Lindsay S. See , Solicitor General, Counsel of Record, Michael R. Williams *, Special Counsel, Thomas T. Lampman , Caleb A. Seckman , Assistant Solicitors General, Office of the West Virginia, Attorney General, Charleston, WV, for Petitioner State of West Virginia.

Steve Marshall , Attorney General, State of Alabama, Treg R. Taylor , Attorney General, State of Alaska, Leslie Rutledge , Attorney General, State of Arkansas, Christopher M. Carr , Attorney General, State of Georgia. Theodore E. Rokita , Attorney General, State of Indiana, Derek Schmidt , Attorney General, State of Kansas, Jeff Landry , Attorney General, State of Louisiana. Eric S. Schmitt , Attorney General, State of Missouri, Austin Knudsen , Attorney General, State of Montana, Douglas J. Peterson , Attorney General, State of Nebraska. Dave Yost , Attorney General, State of Ohio, Mike Hunter , Attorney General, State of Oklahoma, Alan Wilson , Attorney General, State of South Carolina. Jason Ravnsborg , Attorney General, State of South Dakota. Ken Paxton , Attorney General, State of Texas. Sean D. Reyes , Attorney General, State of Utah, Bridget Hill , Attorney General, State of Wyoming, Tate Reeves , Governor, State of Mississippi, By counsel: Joseph Anthony Scalfani , Jackson, MS, for Petitioners.

Emily C. Schilling , Counsel of Record, Holland & Hart LLP, Washington, DC, Tina R. Van Bockern , Holland & Hart LLP, Denver, CO, for Respondents.

Wayne Stenehjem , Attorney General, State of North Dakota, Matthew Sagsveen , Solicitor General, Margaret Olson , Assistant Attorney General, North Dakota Office of Attorney General, Bismarck, ND, Paul M. Seby *, Special Assistant, Attorney General, Matthew K. Tieslau , Greenberg Traurig, LLP, Denver, CO, for petitioner State of North Dakota.

Kevin Poloncarz , Covington & Burling LLP, San Francisco, CA, S. Conrad Scott , Covington & Burling LLP, New York, NY, Beth S. Brinkmann , Counsel of Record, Eric Chung , Laura E. Dolbow , Covington & Burling LLP, Washington, DC, for Power Company Respondents.

Jeffrey Prieto , General Counsel, Gautam Srinivasan , Associate General Counsel, Matthew C. Marks , Deputy Associate General Counsel, Stephanie L. Hogan , Assistant General Counsel, Howard J. Hoffman , Abirami Vijayan , Scott Jordan , Ryland Shengzhi Li , Nora Greenglass , Daniel P. Schramm , Stacey Simone Garfinkle , Attorneys, Environmental Protection Agency, Washington, D.C., Elizabeth B. Prelogar , Solicitor General, Counsel of Record, Todd Kim , Assistant Attorney General, Malcolm L. Stewart , Deputy Solicitor General, Frederick Liu , Assistant to the Solicitor General, Meghan E. Greenfield , Eric G. Hostetler , Chloe H. Kolman , Attorneys, Department of Justice, Washington, D.C., for Federal Respondents.

Sean H. Donahue Counsel of Record, David T. Goldberg , Donahue, Goldberg & Littleton, Washington, D.C., for Non-Governmental Organization and Trade Association Respondents.

Lisa S. Blatt , Counsel of Record, Matthew B. Nicholson , Kari M. Lorentson *, Mihir Khetarpal **, Williams & Connolly LLP, Washington, DC for Amici Curiae.

Charles T. Wehland , Jones Day, Chicago, IL, Jeffery D. Ubersax , Kushner & Hamed Co., LPA, Cleveland, OH, Yaakov M. Roth , Counsel of Record, Jeffrey R. Johnson , Brinton Lucas , Jones Day, Washington, DC, for Petitioner.

Martin T. Booher , Joshua T. Wilson , Baker & Hostetler LLP, Cleveland, OH, Mark W. DeLaquil , Andrew M. Grossman , Counsel of Record, Jenna M. Lorence , Baker & Hostetler LLP, Washington, D.C., for Petitioner.

Drew H. Wrigley , Attorney General, State Of North Dakota, Matthew Sagsveen , Solicitor General, Margaret Olson , Assistant Attorney General, North Dakota Office of Attorney General, Bismarck, ND, Paul M. Seby *, Special Assistant, Attorney General, Christopher L. Bell , Matthew K. Tieslau , Greenberg Traurig, LLP, Denver, CO, for Petitioner State of North Dakota.

Charles T. Wehland , Jones Day, Chicago, IL, Jeffery D. Ubersax , Kushner & Hamed Co., LPA, Cleveland, OH 44114, Yaakov M. Roth , Counsel of Record, Jeffrey R. Johnson , J. Benjamin Aguiñaga , Jones Day, 51 Louisiana Ave., Washington, D.C. for Petitioner.

Michael J. Myers , Senior Counsel, Andrew G. Frank   Brian M. Lusignan Assistant Attorneys General. Letitia James , Attorney General, State of New York, Barbara D. Underwood *, Solicitor General, Steven C. Wu , Deputy Solicitor General, Matthew W. Grieco , Senior Assistant Solicitor General, New York, NY, Rob Bonta , Attorney General State of California, Sacramento, CA, Phil J. Weiser , Attorney General State of Colorado, Denver, CO, William Tong , Attorney General State of Connecticut, Hartford, CT, Kathleen Jennings , Attorney General State of Delaware, Wilmington, DE, Holly T. Shikada , Attorney General State of Hawai'i, Honolulu, HI, Kwame Raoul , Attorney General State of Illinois, Chicago, IL, Aaron M. Frey , Attorney General State of Maine, Augusta, ME, Brian E. Frosh , Attorney General State of Maryland, Baltimore, MD, Maura Healey , Attorney General Commonwealth of Massachusetts, Boston, MA, Dana Nessel , Attorney General State of Michigan, Lansing, MI, Keith Ellison , Attorney General State of Minnesota, Saint Paul, MN, Aaron D. Ford, Attorney General State of Nevada, Carson City, NV, Andrew J. Bruck , Acting Attorney General State of New Jersey, Trenton, NJ, Hector H. Balderas , Attorney General State of New Mexico, Santa Fe, NM, Joshua H. Stein , Attorney General State of North Carolina, Raleigh, NC, Ellen F. Rosenblum , Attorney General State of Oregon, Salem, OR, Josh Shapiro , Attorney General Commonwealth of Pennsylvania, Strawberry Square, Harrisburg, PA, Peter F. Neronha , Attorney General State of Rhode Island, Providence, RI, Thomas J. Donovan, Jr. , Attorney General State of Vermont, Montpelier, VT, Robert W. Ferguson , Attorney General State of Washington, Seattle, WA, Joshua L. Kaul , Attorney General State of Wisconsin, Madison, WI, Karl A. Racine , Attorney General District of Columbia, Washington, DC, Teresa Taylor Tate , City Attorney City of Boulder, Boulder, CO, Celia Meza , Corporation Counsel City of Chicago, Chicago, IL, Kristin M. Bronson , City Attorney City and County of Denver, Denver, CO, Michael N. Feuer , City Attorney City of Los Angeles, Los Angeles, CA, Georgia Pestana , Corporation Counsel City of New York, New York, NY, Diana P. Cortes , City Solicitor City of Philadelphia, One Parkway Building, Philadelphia, PA, Thomas F. Pepe , City Attorney City of South Miami, Coral Gables, FL, for Respondents.


The Clean Air Act authorizes the Environmental Protection Agency to regulate power plants by setting a "standard of performance" for their emission of certain pollutants into the air. 84 Stat. 1683, 42 U. S. C. § 7411(a)(1). That standard may be different for new and existing plants...

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