Why would a disgraced author be asked to the White House to give opinion & why does the media quote liars??

Question

http://www.thenation.com/doc/20060703/cohleresses

Answer 1

I'll only address the second half of your question:

...why does the media quote liars?...

Habit.

Answer 2

let him without sin cast the first stone. I someone told me they never lied I would call him a liar.