The Supreme Court is hearing arguments in a major legal fight over the $8 billion a year the federal government spends to ...

The U.S. Supreme Court heard arguments on Tuesday by the states of Utah and Oklahoma over where cases involving air quality regulations should be heard.

Young climate activists argued the federal government’s role in climate change violated their constitutional rights.

The EPA was wrong to reject Mississippi’s ozone pollution plan using data that wasn’t available when the state submitted the ...

The Supreme Court appears poised to keep at least some Clean Air Act disputes in federal courts outside of D.C. — preventing what at least one justice described as “home court advantage” for the ...

Senate Democrats accuse the Environmental Protection Agency of breaking the law when they cancelled grants worth more than $1 ...

Arguments over the proper jurisdiction for cases related to ozone pollution and biofuel mandates proved complicated for the ...

Utah Attorney General Derek Brown claimed the Clean Air Act ‘has shut down energy production in Utah,’ raising local concerns during high court hearing ...

The US Supreme Court considered where industry groups and states can challenge EPA actions, suggesting the justices might ...

In a 5-4 ruling earlier this month, the court determined the EPA cannot impose “end result” provisions in permits that ...

The Supreme Court declined to hear an appeal in the long-running case, known as Juliana, which helped spawn legal strategies ...