It's hilarious to see Bush "admitting mistakes" at this late date. The only personal mistake he admits is using tough guy language on a couple of occasions ("bring it on," "dead or alive" ) three and five years ago. But that's apparently behind us now, since he tells us he has learned about "expressing myself maybe in a little more sophisticated manner."
How nice for him to get that off his chest. I won't add anything about the "more sophisticated" bit, although my twelve and ten year old kids thought it was hilarious coming from Bush. Too easy a target.