Vehicle Emissions Standards (California v. United States, N.D. Cal., 3:25-cv-04966)

Lawsuit challenging congressional resolution that nullifies longstanding EPA Clean Air Act waivers, which allow California, Oregon and several other states to adopt stringent vehicle emissions standards.

Litigation Details

Case filed on: June 12, 2025

Docket Links:      Trial »

Updates

Date

Update

06/12/2025

On 6/12/25, the plaintiff states filed their complaint ». The litigants are currently briefing several motions to intervene.

09/19/2025

On 9/19/25, federal defendants filed a motion to dismiss.

10/03/2025

On 10/3/25, the plaintiff states filed their opposition to the motion to dismiss.

12/02/2025

On 12/2/25, the district court issued an order denying several motions to intervene by trade groups and the State of Texas. The district court so-ordered a stipulated briefing schedule for the federal defendants’ motion to dismiss and scheduled a hearing on that motion for 2/19/26.