This resolution seeks to block an Environmental Protection Agency rule that sets stricter greenhouse gas emissions standards for fossil fuel-fired electric power plants, both new and existing facilities. The EPA rule, issued in May 2024, replaces an earlier Trump-era regulation called the Affordable Clean Energy Rule. If passed, this joint resolution would use a congressional disapproval process to invalidate the EPA's new emissions standards and prevent them from taking effect. The resolution was introduced by a large group of Republican representatives and is sponsored primarily by coal and fossil fuel-industry-friendly lawmakers. Power plant operators and utilities would be the entities most directly affected, as the blocked rule would have required them to reduce their greenhouse gas emissions or upgrade their facilities.