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The Climate Litigation Database

IGas Holdings, Inc. v. EPA

RMS of Georgia, LLC, d/b/a Choice Refrigerants v. EPA 

25-1079U.S.1 entry
Filing Date
Document
Type
02/27/2026
Petition for writ of certiorari filed.
A company that produces refrigerants filed a petition for writ of certiorari in the U.S. Supreme Court seeking review of the question of whether Congress violated the Vesting Clause of Article I of the Constitution in the American Innovation and Manufacturing Act of 2020 (AIM Act) by giving an executive agency (the U.S. Environmental Protection Agency (EPA)) “unbounded discretion to choose which private parties are entitled to participate in a multibillion-dollar market” for hydrofluorocarbons (HFCs). The petition contended that the AIM Act—which requires a phasedown of HFC production and consumption—failed to provide any “intelligible principle” to guide EPA’s exercise of discretion as required by the Court’s nondelegation doctrine. The company argued that in determining that Congress had provided sufficient guidance for EPA’s exercise of discretion, the D.C. Circuit had “committed an Article III violation by reading into the Act the guidance Congress did not supply.”
Petition For Writ Of Certiorari

RMS of Georgia, LLC v. EPA 

23-1263United States Court of Appeals for the District of Columbia (D.C. Cir.)4 entries
Filing Date
Document
Type
09/15/2025
Petition for rehearing en banc filed by RMS of Georgia, LLC.
A company that imports, produces, and sells refrigerants—which contended that EPA’s allocation rule gave other entities, including end-users such as the government, more than 20% of the company’s market share—argued in its rehearing petition that en banc review was warranted to consider the whether the AIM Act provided insufficient guidance to EPA in violation of the nondelegation doctrine; that the panel disregarded statutory text and interpretation principles and improperly deferred to EPA to supply “an intelligible principle that is otherwise lacking”; and that the EPA rule was at odds with the court’s interpretation of the AIM Act.
Petition For Rehearing
05/10/2024
Reply brief filed by petitioner.
Reply
01/05/2024
Opening brief filed by petitioner.
Brief
09/18/2023
Petition

IGas Holdings, Inc. v. EPA 

23-1261United States Court of Appeals for the District of Columbia (D.C. Cir.)11 entries
Filing Date
Document
Type
09/30/2025
Decision
09/30/2025
Petition for rehearing en banc denied.
Less than two months after denying challenges to a U.S. Environmental Protection Agency (EPA) rule setting an allocation methodology for hydrofluorocarbon (HFC) allowances for 2024 through 2028 as part of the cap-and-trade program to implement the HFC phasedown required by the American Innovation and Manufacturing Act (AIM Act), the D.C. Circuit Court of Appeals denied a petition for panel rehearing or rehearing en banc filed by a company that imports, produces, and sells refrigerants. No member of the court requested a vote on the petition for rehearing en banc.
Decision
08/01/2025
Petitions for review denied.
The D.C. Circuit Court of Appeals upheld a U.S. Environmental Protection Agency (EPA) rule setting an allocation methodology for hydrofluorocarbon (HFC) allowances for 2024 through 2028 as part of the cap-and-trade program to implement the HFC phasedown required by the American Innovation and Manufacturing Act (AIM Act). The court rejected a claim that the AIM Act unconstitutionally delegated legislative power to EPA, finding that “Congress provided ample direction to guide the EPA’s exercise of discretion” in deciding how to allocate the HFC allowances. The court also found that EPA used a reasonable allocation methodology.
Decision
02/13/2025
Opposition filed by intervenors for respondents in opposition to EPA motion to hold cases in abeyance.
Opposition