a suicide bomber. new developments in the probe into a deadly terror attack. wolf blitzer is off today. i m candy crowley. and you re in the situation room. the battle for the white house now centered in the state of ohio. president obama paid yet another visit to what both campaigns see as a must-win state. and today the president came armed with a new report on tax policy that he used to hammer away at mitt romney. our cnn white house correspondent, dan lothian, is traveling with the president. dan, the president pretty much could take up citizenship in ohio at this point. reporter: that s right. he really could. he was right here in akron almost a month ago. it was part of his bus tour. and since he announced his re-election bid last spring, the president has been to this state about a dozen or so times. this is really a crucial state not only for the president but also for mitt romney. and today the president was going after his opponent on his tax plan saying they