July 09, 2026
The U.S. Department of Justice has intervened in another lawsuit targeting California's emission rules for heavy-duty trucks, arguing the Clean Air Act bars states from attempting to enforce or adopt their own emissions standards for new vehicles.
November 10, 2025
An Illinois federal judge sent a suit brought by the American Free Enterprise Chamber of Commerce and joined by the Trump administration that challenges California's strict emissions standards for heavy-duty trucks to federal court in the Golden State.
August 15, 2025
The Trump administration increased its assault on California's stringent emissions standards for heavy-duty trucks, saying Friday that it has intervened in lawsuits to strike down the Golden State's attempts to still enforce its standards in defiance of federal law.