Too damned much!
At one time, after coming into a sizable chunk of change when I retired early, I wrote a check to be specifically applied to the KH loan pay-off. That was just about the exact same time powers-that-be in Crooklyn wrote off closed end loans in favor of their "contributions" in perpetuity scheme. Of course the mid five figure sum of money quickly disappeared never to be mentioned again.
Just recently as executor of my fathers estate I was unable to shelter his sizable financial investment portfolio before he died, and as a result the greedy b--tards in New York received a nearly seven figure bequest. The only thing I got in return was a letter asking if they could expect more! May they rot in Hell for their greed!