Dick Cheney is fired up over this, as rightly he should be:
"Aside from the chilling effect on the CIA and the impropriety of dragging individuals through investigations with virtually no chance for convictions, reversing a prosecutorial decision of a prior administration is a dangerous precedent for the Justice Department. One former Justice lawyer warns: "It would mean no one would ever get any peace, because if you were the target of an investigation at the end of which DOJ said it was not prosecuting, there would be no finality to that decision. It would turn DOJ into a purely partisan agency."
And that is what the Holder Justice Department has become."