Environmental Protection Agency chief Scott Pruitt announced Monday the Trump administration will repeal the Clean Power Plan.
The Clean Power Plan would reduce carbon emissions from power plants by 30 percent nationwide in an effort to slow man-made climate change.
Indiana and 27 other states previously sued the EPA over the Obama-era rule.
The U.S. Supreme Court blocked the rule from going into effect in 2016, a move that met the approval of industry groups such as the Indiana Coal Council.