Iowa is leading 19 states in a lawsuit against the U.S. Environmental Protection Agency for backing California’s future ban on heavy diesel vehicles in a purported attempt to regulate traditional trucking “out of existence through mandating net-zero emissions standards.” The 51-page legal action against the EPA and its administrator, Michael Regan, was filed June 5 in the U.S. Court of Appeals of the District of Columbia. The attorney generals from the 19 states fighting the diesel trucking ban contend that California’s Advanced Clean Trucks regulation violates the Clean Air Act and other federal laws. Their lawsuit is petitioning the court to review the EPA’s actions.

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