. >>> i'm danielle noddingham in washington. coming up, why has illinois congressman jesse jackson junior been missing for weeks on capitol hill? >>> one day after mitt romney was booed, president obama addressed the convention in houston, appearing in the video, pleasure asked members of the -- pleasure asked members here about it all. >> that's why serving as your president, i'll get up everybody single day and fight as hard as i can for that big diverse hopeful, optimistic, hard working america that we love. that will make him feel like it true. >>> new information from jesse jackson jr.'s office, they have not put to rest questions about the absence from work. the son of civil rights leader, jesse jackson is on medical leave, but there are calls for him to provide more details about what'sing wrong. danielle noddingham has the latest. >> reporter: the congressman jesse jackson jr. has not been seen on capitol hill for a month. his office released a statement from the unnamed doctor saying that the congressman has been receiv