they skipped last year in the midst of the 2012 campaign. the president, he hit the links with the press pool watching both yesterday and today. i notice that this morning drudge was leading with a story that talked about the arrival of bo, the family dog via an osprey helicopter, the number of hotel rooms needed for secret service, and the presence of a mesh bag filled with basketballs in the luggage. criticizing a president s vacation, especially this president s vacation has become a rite of summer. to learn more of the facts, today i chatted with mark knoller. he is the white house correspondent for cbs news, but he is more than that. he is the go-to statistician for presidential behavior, and he often shares his data with colleagues, sometimes with the presidents themselves. he maintains lists of literally everything the commander in chief does, from bill signings to pardons, vetoes, air force one flights, marine one trips and vacation destinations, even church attendance. you sho