Listen, I understand the strategy.
I know where Mueller is trying to go in order to hang the President.
http://www.thedailybeast.com/exclusive-mueller-enlists-the-irs-for-his-trump-russia-investigation
But this strategy of letting Lerner off the hook won't work. There will be another former Obama official, a Deep State traitor, or some other miscreant to take Koskinen's place. Mueller probably has a list of cooperating Obama IRS officials a mile long. Taking out Koskinen will not do one damn thing to stop Mueller's witch hunt. You can't play wack-a-mole on this scale and expect to win. The Deep State is deep and evil.
From that article above:
Potential financial crimes are a central part of Muellers probe. One of his top deputies, Andy Weissmann, formerly helmed the Justice Departments Enron probe and has extensive experience working with investigative agents from the IRS.
I am well familiar with Andy Weissmann. Trust me on this. I know how evil he is. Not only is he completely unethical (so unethical that even the Supreme Court took "relish" in handing him his teeth), he is also a homosexual pervert.
Louis Lerner is so guilty even the Democrats and the media cannot hide it. Think about the people who were put through the financial, personal, and emotional ringer by her IRS? Talk about "pain and suffering."
Sessions is a double coward. First he allows Trump to persecuted through Mueller, and then he allows this evil b^tch to walk away scot-free from her crimes.
You can construct this little house of cards strategy all you want. It is a miscarriage of justice, and it won't do anything to stop the evil forces persecuting the President and his family. You know it, and I know it.
Koskinen will not cause any trouble now that he knows the Trump people own him. He will be left in place with a Sword of Damocles dangling above him.