Unless you're proposing building an airtight dome over New Jersey, then other states have to deal with whatever pollution emanates from there, which is why such arguments strike me as intentionally obtuse.
The simple fact is that those of us on this board are interested in/enamored with devices which cause pollution. I personally would like to be able to drive cars in 50 years, but if we allow the auto industry, as well as other pollution sources, unfettered license to pollute, then we will become China, where you can't see the tops of buildings because of the smog, and you have to wear masks to try and keep your lungs clear.
And once that happens people will howl in protest that they can't breathe outside anymore, and the likely reaction will be draconian to say the least. I highly doubt Americans who grew up breathing relatively clean air and being able to swim in almost any body of water in the country will stand for rivers catching fire again, or ash rain in LA, or constant asthmatic symptoms from breathing bad air, and when you combine that with the fact that the younger generation isn't as enamored with cars as the rest of us, a very likely target will be the car.
So unless you want to trade your Acura in for a city bus, it's in your best interest to stop decrying every environmental regulation you see.