This joint resolution seeks to overturn an Environmental Protection Agency rule that sets greenhouse gas emissions standards for heavy-duty vehicles in its third phase, which was published in April 2024. The measure uses the Congressional Review Act, a law that allows Congress to disapprove and nullify federal regulations within a limited timeframe. The resolution affects the trucking and heavy-duty vehicle industry, which would face less stringent environmental requirements if the rule is overturned, while also impacting environmental protection efforts aimed at reducing transportation-related emissions. The resolution was introduced by a bipartisan group of senators led by Senator Sullivan and includes supporters from both parties. If passed by both chambers and signed into law, the EPA rule would be invalidated and unable to be enforced.