The Supreme Court on Friday let stand Biden administration rules that would cut emissions of the planet-warming gas methane as well as mercury in a rare win for an environmental regulation pending before the conservative high court.

Republican-led states and industry groups argued that the Environmental Protection Agency had moved too fast and imposed onerous regulations.

The U.S. Supreme Court declined on Friday to put on hold new federal air pollution rules from President Joe Biden's administration to tighten limits on mercury and methane, acting in challenges brought by a group of states - most of them Republican-led - and industry groups.

The newly released evidence in the election-fraud case will be hotly contested, a former federal prosecutor has said.

The Supreme Court is back for another term as Election Day approaches, raising the question of whether the Republican-appointed majority will get involved.

Trump attorneys filed a memo Thursday in support of their motion to dismiss all charges brought against the former president by Special Counsel Jack Smith.