Here’s the rub - say CA makes some law mandating something on some manufactured product. Some thing they have done in the past, but now with this new treaty they take it to some extreme, like mandating E25 or higher for fuel.
That means all manufactures will have to comply with CA regulations no matter how extreme and new cars will have to have E25 rating no matter what state it is in. The CA market is just so huge that manufactures will have no other choice but to comply and so the rest of us will have to as well - they will be no other less restrictive product. So the Paris treaty will in effect be signed by the US. The only way to stop this insanity is to stop CA from going down that road. But then we need a real AG with guts, not a reclusive entitled wimp getting kudos in his declining years.
Not necessarily.
For example, auto manufacturers have to meet federal mileage regulations based upon the total number of vehicles that they sell in the U.S. So auto manufacturers end up having to sell highly subsidized electric aluminum cans on wheels, which no one wants, to offset against their sales of trucks, SUVs and luxury sedans.
If California ups its regulations so that all you can buy there is electric aluminum cans on wheels, then the auto manufacturers will be able to sell most of their federally mandated supply of electric aluminum cans on wheels in California, and sell trucks, SUVs and luxury sedans in the rest of the U.S.
It is a win/win for everyone except for the poor idiots who continue to live in California and vote themselves into the poorhouse.