Obama has a very difficult decision to make about whether he should openly and vigorously support Biden or refrain from further associating himself with that candidate.
Obama might conclude that the only way he can avoid exposure for the corruption of his administration is to make sure Biden gets into the White House.
Or, Obama might conclude that Biden is doomed to lose the election no matter how much he might support Biden and the best thing for his future, his legacy and even his criminal exposure, is to dissociate himself entirely from Biden's criminal enterprise.
I think Obama should cooperate with the Trump administration, secretly. I’ve always thought that either Hillary or Obama will go down one day. At least in a just world. Obama could secure his legacy and ride off into the sunset while Hillary goes to prison. Sorry, did I just wake up? LOL