I'm so old I can remember those ancient days when it was accepted that the Justice Department was independent from the president, that the Attorney General and others should make decisions absent political considerations, and that when it seemed as if independence might not be possible, the AG should recuse him/herself and appoint a special prosecutor.
I'm not the first person to bring this up recently, but the point is that it shouldn't be Obama's and Rahm Emmanuel's decision whether to prosecute anybody. If there's suspicion and clear evidence that people broke laws, an inquiry should begin. If the AG feels undue pressure from President Change and his gang then he should appoint a special prosecutor to try to wall off the investigation from political pressure.