No. 26-277
Vide 26-298
 
Title: Kentucky, et al., Petitioners
v.
Environmental Protection Agency, et al.
Docketed: September 2, 2026
Lower Ct: United States Court of Appeals for the District of Columbia Circuit
   Case Numbers: (24-1050, 24-1051, 24-1052, 24-1073, 24-1091)
   Decision Date: June 26, 2026
 
Proceedings and Orders
Aug 28 2026 Petition for a writ of certiorari filed. (Response due October 2, 2026)
Petition Appendix Appendix Certificate of Word Count Proof of Service
Sep 15 2026 Brief amici curiae of The Honorable Andrew R. Wheeler, et al. filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Sep 20 2026 Motion to extend the time to file a response from October 2, 2026 to November 7, 2026, submitted to The Clerk.
Main Document
Sep 22 2026 Motion to extend the time to file a response is granted and the time is extended to and including November 9, 2026, for all respondents. See Rule 30.1
Sep 23 2026 Brief amicus curiae of Midwest Ozone Group filed. VIDED.
Main Document Proof of Service Certificate of Word Count
Oct 01 2026 Brief amici curiae of Prime Mover Institute, et al. filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Oct 01 2026 Brief amicus curiae of Job Creators Coalition filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Oct 02 2026 Brief of Federal Respondents in support filed. VIDED.
Main Document Proof of Service
Oct 02 2026 Brief amicus curiae of Mountain States Legal Foundation filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Oct 02 2026 Brief amici curiae of Representative Brett Guthrie, et al. filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Oct 02 2026 Brief amici curiae of American Fuel & Petrochemical Manufacturers, et al. filed. VIDED.
Main Document Certificate of Word Count Proof of Service
Oct 02 2026 Amicus brief of Competitive Enterprise Institute; Committee for a Constructive Tomorrow; Energy & Environment Legal Institute; and Heartland Institute submitted.
Main Document Certificate of Word Count Proof of Service
Oct 02 2026 Amicus brief of Western States Trucking Association submitted.
Main Document Certificate of Word Count Proof of Service
Attorneys
Attorneys for Petitioners
Matthew Franklin Kuhn
Counsel of Record
Office of Attorney General of Kentucky
1024 Capital Center Drive, Suite 200
Frankfort, KY 40601
MATT.KUHN@KY.GOV
Ph: (502) 696-5300
Party name: Commonwealth of Kentucky, State of West Virginia, et al.


Attorneys for Respondents
Joshua A. Klein
Counsel of Record
California Department of Justice
1515 Clay Street
Suite 2000
Oakland, CA 94612-1413
JOSHUA.KLEIN@DOJ.CA.GOV
Ph: 510-879-0756
Party name: State of California


D. John Sauer
Counsel of Record
Solicitor General
United States Department of Justice
950 Pennsylvania Avenue, NW
Washington, DC 20530-0001
SUPREMECTBRIEFS@USDOJ.GOV
Ph: 202-514-2217
Party name: Federal Respondents


Other Attorneys
Cory L. Andrews
Counsel of Record
Washington Legal Foundation
2009 Massachusetts Avenue, N.W.
Washington, DC 20036
CANDREWS@WLF.ORG
Ph: 2025880302
Party name: Andrew R. Wheeler and Washington Legal Foundation


Kathy G. Beckett
Counsel of Record
Steptoe & Johnson PLLC
Post Office Box 1588
Charleston, WV 25326
kathy.beckett@steptoe-johnson.com
Ph: (304) 353-8000
Party name: Midwest Ozone Group


James Ryan Conde
Counsel of Record
Boyden Gray PLLC
800 Connecticut Avenue NW
Suite 900
Washington, DC 20006
jconde@boydengray.com
Ph: 202 955 0620
Party name: Prime Mover Institute and the Manhattan Institute


Edwin Donald Elliott
Counsel of Record
Earth and Water Law, LLP
1455 Penn Ave, NW
Suite 400
Washington, DC 20004
edonaldelliott@gmail.com
Ph: 2022564149
Party name: Job Creators Coalition


Theodore Hadzi-Antich
Counsel of Record
Texas Public Policy Foundation
901 Congress Avenue
Austin, TX 78701
tha@texaspolicy.com
Ph: 512-472-2700
Party name: Western States Trucking Association


Ondray Toney Harris
Counsel of Record
Competitive Enterprise Institute
1310 L Street NW, 7th Floor
Washington, DC 20005
ondray.harris@cei.org
Ph: (202) 331-2265
Party name: Competitive Enterprise Institute; Committee for a Constructive Tomorrow; Energy & Environment Legal Institute; and Heartland Institute


Kole Wayne Kelley
Counsel of Record
Mountain States Legal Foundation
2596 South Lewis Way
Lakewood, CO 80227
kkelley@mslegal.org
Ph: 303-292-2021
Party name: Mountain States Legal Foundation


Thomas Ryan McCarthy
Counsel of Record
Consovoy McCarthy PLLC
1600 Wilson Boulevard
Suite 700
Arlington, VA 22209
TOM@CONSOVOYMCCARTHY.COM
Ph: 7032439423
Party name: Representative Brett Guthrie and Members of Congress


John A. Sheehan
Earth & Water Law LLC
1455 Pennsylvania Avenue, N.W., Suite 400
Washington, DC 20004
john.sheehan@earthandwatergroup.com
Ph: 202-256-4149
Party name: Job Creators Coalition


Aaron Michael Streett
Counsel of Record
Baker Botts, L.L.P.
910 Louisiana Street
Houston, TX 77002
AARON.STREETT@BAKERBOTTS.COM
Ph: 7132291855
Party name: American Fuel & Petrochemical Manufacturers, Association of Electric Companies of Texas, Business Association for Effective Regulation, Texas Aggregates & Concrete Association, Texas Association of Manufacturers, Texas Chemistry Council, and Texas Oil & Gas Association