Obama knows that he has to protect Hillary or she will take him down with her. On the other hand, he also knows that nothing is going to happen to Hillary because even if she was indicted, he would pardon her. If they wait until she is elected, she can pardon herself. So, she has nothing to worry about, other than spreading enough lies about Trump as fast as she can to insure her election win. If Trump wins, all bets are off. Obama will then hope that Hillary does not try to through him under the bus and ruin what little legacy he has.