Passage of the joint resolution that would provide for congressional disapproval of the January 2023 EPA rule imposing more stringent emissions standards on heavy-duty engines and vehicles. The rule requires heavy-duty vehicles, starting in model year 2027, to comply with reduced emissions limits of nitrogen oxides and other pollutants, both in real-world conditions and laboratory-tested scenarios. It would also lengthen the period during the engine’s operational life when the reduced emissions standard must be met. According to the EPA, the rule will reduce nitrogen oxide emissions from heavy-duty trucks by almost 50 percent by 2045. The EPA rule took effect on March 27, 2023. Under the joint resolution, the rule would have no force or effect.