Cavuto pretty much dismantled him, and didn't even work very hard at it. Kennedy's used to having interviewers fawn over him and lap up his drivel without question, so when someone interviews him who actually asks some real questions, he's unprepared and his natural state of stupid shines through.
I'll bet you'll never see Cavuto interview him again.
Yes, he sure did. Kennedy just stumbled around, stammered, what a goonie.