Recently the IRS had to formally apologize for targeting conservative organizations and foot-dragging their applications for tax-exempt status. This did not please IRS Commissioner John Koskinen, a swamp creature if ever there was one, and the man appointed by Barack Obama to cover up the IRS's malfeasance even as it was claimed he was there to do the opposite.
All you have to do is listen to Koskinen talk for a few minutes to know the man detests the idea that his agency should be held accountable for anything it does. He believes the federal bureaucracy knows best and should be able to do whatever it wants for whatever reason.