The U.S. Department of Justice 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 federa

The DOJ wants to end California’s "Clean Truck Partnership," which aims to curb pollution through engine requirements, electric vehicle mandates and maintenance regulations.

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.