"An increasing number of states are looking to follow the precedent set by California and adopt stricter vehicle emissions standards as the Biden administration appears poised to green light those efforts.
The Virginia legislature this past week passed legislation to toughen its emission rules, and similar proposals are in the works in Minnesota and Nevada.
If successful, those states would join the 13 others, plus Washington, D.C., that have adopted California’s vehicle tailpipe emissions standard. During the Trump era, that standard was taken out of play."
Source: The Hill, 03/02/2021