This interview, complete with some cleverly hidden words, shows the president is not on Hillary's side and will not run cover for her on the Emailgate scandal.
(1) He claims to have not known about it when it happened. In other words this is her own scandal, not anyone else's.
(2) It's been "ginned up" "in part" because of politics. So he's saying (or implying at least) that there's legitimate concern there as well.
Thanks Obama, that's actually helpful.