Oh, up until recently, we were dishing out revenge left and right. 10’s of thousands of jihadis, just like the 9/11 thugs, have been sent to the great beyond. In fact, in the big picture, assuming that OBL isn’t moldering in some cave right now, making him irrelevant is the best revenge there is.
As far as how the revenge business goes now, no comment. I am sure that at some point the president will apologize for it though.