I think Obama planned to drop the dime on Hillary after she won the nomination, allowing Biden to ride in on his white horse to save the day. Then Obama would pardon Hillary on his way out and Biden begins Obama’s third term. If Bernie wins the nomination that plan goes out the window. He needs to scupper Sanders somehow.
I don’t think the country has gone so far down the tubes (Yet) that Sanders can win the general. At least I hope not. But if anyone can pull off a Sanders win, the GOP will find a way.
Easy. Nominate Jeb.