The EPA won’t authorize construction of any new natural gas facilities....
was false.
Maybe sometime in the future they will stop, but they have been permitting new nat gas plants, and even coal plants and continue to do.
They make it harder and more expensive, but they haven't stopped.
“won’t” is a future event.
“Have been” is a passed event.
In the time it takes to shut down the existing coal fired plants, and replace that electrical generating capacity, Obama’s EPA will have set in motion the rules to constrain electrical production via natural gas facilities.