The Supreme Court denied a petition from 10 Republican-led states Thursday requesting it to block a key Biden administration climate policy.

The decision ensures that President Joe Biden’s so-called “social cost” of carbon policy — which assigns an estimated dollar value or cost to every ton of carbon emissions, according to the Government Accountability Office — can remain in place and be used for future federal permitting processes. The high court rejected states’ April 27 petition without giving a reason or listing which justices opposed it, according to a one-page filing published on the Supreme Court docket.

The 10 states, led by Republican Louisiana Attorney General Jeff Landry, had argued the policy was an example of executive overreach and required congressional approval in their lawsuit challenging it in April 2021.