Not only that but I thought comedy was explicitly ok as well! It's so confusing, you have to ban so many accounts before you get free speech apparently.
Its true. He claims he was "somewhere in Texas" during the assassination. Its one of those events where everybody remembers where they were when they heard the news, but he does not.
"The decision of one man, to launch a wholly unjustified and brutal invasion of Iraq. I mean, of Ukraine. Iraq too. Anyway...[I'm] 75."
– George W. Bush
He definitely didn't say "Iraq too". I've heard the clip and seen the video. He said something like "heh, Iraq..." And continues on. As much as people want to make this slip up into some full blown admission of guilt it's simply not what happened. The most I'm willing to accept is that it was a Freudian slip.
Edit: After re listening to the clip, I can see why people say he says "Iraq too," it's not as clear cut as I remember. Given the way he jokes about his age afterwards I wouldn't see it as a confession though, worst case just a joke in poor taste about a slip of the tongue.