Ford pardoned Nixon.
obama will pardon clinton.
This "gets Trump off the hook" as to what to do about her.
If he directed his administration to go after her, he would be labeled a heartless tyrant by the left and the media, with some impact. The ramifications in both Congress and the country would last his entire time in office.
If he pardons her, it would damage him (with his own people) as much as Nixon's pardon damaged Gerald Ford. He would be attacked as bein' in cahoots with her, because "they all take care of each other". And, as has often been said in here, it was because he was "just another New York liberal, like her."
Let obama do the deed.
His hands are already dirty.
Let her wander off with the pardon around her neck.
Into oblivion.