president having fun in the sun. or the rain. presidential vacations have long been a part of the mythology of the american presidency. president clinton was a very visible visitor to the vineyard. and there's george h.w. bush at kennebunkport, ronald reagan on horseback, richard nixon walking the beach in wingtips, lbj on his ranch, jfk on hyannis port. it's part of the image. some conservatives complain that this president is taking too many vacations. we asked cbs radio's mark knoller, the white house press corps' unofficial record keeper. how does president obama stack up when it comes to vacations to his predecessors? >> so far he's been on vacation, he's accumulated 46 days of vacation since taking office. now, compare that to his immediate predecessor. at this point in his presidency,