If this investigation is not purely political, then the investigation should go forward.
You're wrong.If Jeb pardoned Rush at any point, the screeching about favoritism,political fixes and the whole litany of sins would be broadcast far and wide, You must know that. The State's Attorney has not acted as the people's advocate, rather he has acted as the DNC's hitman and that too is pretty obvious. Remember this is not Bill Moyers,here,it's the arch enemy of the Stalinist utopians we speak of.
What you wrote would make sense for nearly anyone else, but not for Rush ,nor any other prominent Republican.