[bdhess]

CA got an exemption for CARB written into the federal emissions law at the time it was drafted. That's not the same as being grandfathered in just by virtue of having been the first to regulate.

[myrandomcomment]

Thanks for the clarification. I do believe there was some threat of case law behind this (back to states rights).

Interesting background of the current president trying to pull the waver here:

https://www.theatlantic.com/science/archive/2017/03/trump-ca...