Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review".

HJRES 172 is a joint resolution seeking congressional disapproval of an Environmental Protection Agency (EPA) rule that established updated national emission standards for hazardous air pollutants from coal- and oil-fired power plants. The resolution, if passed, would block the EPA rule (published May 7, 2024) from taking effect, directly affecting coal- and oil-fired electric utility steam generating units. It uses the procedural mechanism under Chapter 8 of Title 5, U.S. Code, which allows Congress to formally reject agency regulations. This disapproval would prevent the EPA's rule from being implemented, halting its requirements for these power plants to reduce hazardous air pollutant emissions.