The Trump administration is seeking to sue California to halt the state from enforcing its effort to electrify its truck fleet. The administration filed motions to join existing cases against the state over its rules seeking to reduce pollution and planet-warming emissions from trucks.

Four leading truck manufacturers are suing the state for clarification of their legal obligations in light of the "Clean Truck Partnership," likewise an injunction to block California from enforcing federally preempted emissions regs.

The U.S. Justice Department said on Friday it has sued California in a bid to end the state's enforcement of emissions standards for trucks. The DOJ said it filed two complaints this week in federal c