You beat me by a second or two: I was going to reference the same thing.
All the logic of a six-year-old at daycare: “HE STARTED IT!”
It's even more childish than that. It's more like "So? He did it too!" Or "I know you are but what am I?" Or "Takes one to know one."
Seriously, this is the level of "discourse" in which the Chief Executive of the United States indulges. He must have learned his forensic skills at Harvard.