So you’re thinking there is greater than zero probability that Loretta Lynch would prosecute Caliph Baraq?
But there is a infentisimal chance that things could turn so bad that enough Democrats might want to cut their ties with BO to turn on him politically.
Nixon's resignation is a poor comparison since the man had a sense of shame and so did Republican leaders like Senator Goldwater. But it did happen fairly quickly once a few prominent GOP leaders were on board.
Not likely it will happen with Democrats since they have no sense of shame, but they could throw him under the bus if it becomes clear he is seriously threatening their chances of political survival. It is not likely to happen, but it could.