The US has been trending downward in emissions for some time now without the federal government having to mandate anything. Texas of all places is one of the fastest growing locations in the country for wind energy.
Exactly, decarbonization will save us tons of money as individuals and as a society. The probe is that many monied interests don't want to change their businesses to adapt.
This is a separate issue from federal action. We take all sorts of actions with vast political and economic action that don't save money, to reduce pollution.
But by leading the way, we will encourage other countries to not build coal plants, which was the "legitimate" question that was asked.
Higher standards in California mean companies default to that standard nation wide because it's easier to have a single product and avoid supply chain issues.
Same reason most all orange juice is Kosher. A small but large enough hard preference controls the market because the rest dont care enough.
Hopefully red states won't put an mpg cap out of spite
Is it fast enough to stop a huge economic and biological burden hitting our children? It’s sad how short sighted the majority of people in the US is today. Small sacrifices could lead to hugely greater quality of life for everyone’s grand children but everyone is special and deserve everything they desire right now.