The U.S. Supreme Court denied a petition for writ of certiorari in which a refrigerant producer sought review of the D.C. Circuit’s August 2025 decision upholding 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 petition presented the question of whether Congress in the AIM Act violated the Vesting Clause of Article I of the Constitution by giving EPA “unbounded discretion to choose which private parties are entitled to participate in a multibillion-dollar market” for HFCs. The petition contended that the AIM Act violated the nondelegation doctrine by failing to provide any “intelligible principle” to guide EPA’s exercise of discretion.

Challenge to EPA's final rule regarding the allowance allocation methodology for 2024 and later years that will be used to implement the phasedown of hydrofluorocarbons under the American Innovation and Manufacturing Act.

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

<p>This entry was provided by the Sabin Center for Climate Change Law. Please see the terms of use for citation and licensing of third party data.</p>

Supreme Court Denied Review of Decision Upholding EPA Rule Implementing HFC Phasedown 

Filed

The Climate Litigation Database

Find climate change litigation data and indicators for {text}.

{text} litigation

Sabin Center for Climate Change Law provides Climate Litigation Database, a comprehensive database of US and Global climate change caselaw

Quickly and easily search through the complete text of thousands of climate change law and policy documents from every country.

Search the Climate Litigation Database

An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Justice is the ethical and political framework that addresses fairness, including issues of responsibility, rights, and structural inequity.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

Fossil fuel is a generic term for non-renewable energy sources such as coal, fossil gas, and oil (including crude oil, and petroleum products), that can be used for electricity and heat generation. Fossil fuels are hydrocarbons formed from pressurised and heated organic material buried over millions of years.

Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

A ban is a legal action that prevents the sale or supply of a product or service, or that recalls a product from the market. Examples are bans on SF6, greenwashing, fossil fuel advertisement or single-use plastics.

People with different national or cultural traditions from the dominant population

People whose health, both mental and physical, makes them more vulnerable to the effects of climate change

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

The activities of industries that transforms raw materials into finished goods through industrial processes.

This sector creates and distributes information and entertainment through television, radio, print, and digital platforms.

This sector involves activities that impart knowledge and skills to individuals, including formal schooling, vocational training and educational support.

Supreme Court Denied Review of Decision Upholding EPA Rule Implementing HFC Phasedown

Policy instrument

Impacted group

Economic sector