Want to know why President Bush was smirking?

Do you want to know why President Bush was smirking while he was presenting his nominee to SCOTUS? Probably because this was going on to his left:

As well as this:

Last night on Ted Koppel he showed a side view of the introduction. The Roberts' children were misbehaving some, sort of like Giuliani's son during Rudy's innauguration. This was in the Presidents peripheral vision and was why he was smirking. The kids had to be taken off the stage by their mom.