Comment by bikezen

8 years ago

There is nothing preventing it, they've all just decided California rules meet their same goals, and it is more advantageous for them to share the same rules than expand further.

Yes there is, 49 states must seek policy exemptions from the EPA and win approval for them, while California has no such burden. CA gets a perpetual exemption allowing them freedom no other state gets.

Edit: I was actually wrong here, no other state may even ask for a waiver.

> This power is reserved alone for California, and it only covers pollution from cars. No other state can ask for a waiver. (In all of federal law, this might be the only time that a specific state is given special authority under such a major statute.)

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