What did the Mayo Clinic really say?

Extracted from the letter to POTUS

Under the current Medicare system, a majority of doctors and hospitals that care for Medicare patients are paid substantially less than it costs to treat them. Many providers are therefore already approaching a point where they can not afford to see Medicare patients. Expansion of a Medicare-type plan without a method to define, measure, and pay for healthy outcomes for patients will move many doctors and hospitals across this threshold, and ultimately hurt the patients who seek our care. We should not put more Americans into the current unsustainable system.

Get the full copy here:

Yah, that's pretty much it