You can trace this issue back to the late 60s and 70s when the US Congress made the bright decision to limit the use of NG in generation of electricity. Their stupidity started the boom in coal fired generators. It was all from the NG shortage and jumped on by some in the East half of the US who had an abundance of coal.
It was very short sighted. And, today we are awash in NG and our dumb assed President isn't smart enough to take advantage of it and we have some of the same leather heads in the US Senate.
This country is trading our wealth and building empires in other parts of the world because of our stupidity.