President Malia 's visit first time `` This is not untypical , '' he said . a sitting president has been `` Late Show With David Letterman guest . Obama says he 'll ask `` tough questions '' before sending more troops to Obama . President says he does n't think racism fuels opposition to health care overhaul . What did daughters Obama and Sasha do this summer ? They `` goofed off , '' he says .
President Malia 's visit first time a sitting president has been `` Late Show With David Letterman guest . Obama says he 'll ask `` tough questions '' before sending more troops to Obama . President says he does n't think racism fuels opposition to health care overhaul . What did daughters Obama and Sasha do this summer ? They `` goofed off , '' he says .