Washington (CNN) A coalition of states and cities will ask a federal court to block the Trump administration's overhaul of emission regulations for coal-fired power plants.

The administration rolled out its Affordable Clean Energy, or ACE, rule earlier this summer, shifting regulatory authority to states while also promoting energy independence and offering hope to the struggling US coal industry.

It replaced one of the Obama administration's hallmark plans to address climate change, the Clean Power Plan. A divided Supreme Court had blocked that rule from taking effect while challenges to its legality played out.

The Trump-led Environmental Protection Agency said the rule would not overstep the legal bounds that Republicans believe Obama's plan crossed. But the EPA itself says the rule could result in 1,400 more premature deaths by 2030 than the Obama-era plan it will replace.

Several states pledged to sue over the Trump administration plan. In the lawsuit , 22 states and seven cities will claim the rule "disregards requirements of the federal Clean Air Act."

Read More