Hello bafanguy,
i think the answer to your questions lie not only in your link, but more importantly a simple investigation into ample information available from many sources online,
You are correct with your research on essential air service passed through Congress,
I am sure you have both the ability and motivation to pursue those questions, but if you are unable to “understand “ the gathering of correct information and utilising it in a clear and diagnostic format,
maybe it is time to chase those injuns out the back yard bud buddy?