Kennedy, like all other Presidents, faced intense criticism from both the right and the left, which limited his options. That's where Hitchens fails; he doesn't remember and doesn't describe context.
Funny, that's what I say about all of you JFK-worshipping liberals.
"You have a problem."
This man had a marvelously wry sense of humor so I asked him what my problem was, expecting any sort of answer except the one I got.
"I want to retire, and I want to do it now - I don't want anyone to know."
I told him that was quite a request but I got on the phone to personnel and they said they could process him out within a few hours though they weren't very pleased.
When I asked him why he didn't want anybody to "know", he said:
"While you're here you're a Horse's Ass, when you leave, you're a Hero, I don't want anybody lying."