"More than 70 Democratic lawmakers from both chambers have joined a suit challenging the Trump administration for rolling back Obama-era power plant regulations.
The Affordable Clean Energy (ACE) rule finalized by the Environmental Protection Agency (EPA) in August scraps former President Obama’s Clean Power Plant rule. Lawmakers in the House and Senate filed separate amicus briefs challenging the rule late Friday.
The ACE rule aims to give states more time and authority to decide how to implement the best new technology to ease net emissions from coal-fired plants. The rule does not set any standards to cap those emissions."