I think we can be certain Donald Trump doesn't want to get bogged down in a prosecution of Hillary Clinton. However, his supporters want exactly that, remember the shouts of "lock her up."
Now comes a story where the PEOTUS has tweeted she is "guilty as hell." I think it likely he does so to force Obama to pardon her, thus making prosecution impossible while bolstering his "she's guilty" narrative.
Are Scott Adams and I the only ones who think Trump is playing chess while everybody else is playing checkers? Let's see if he can sucker Obama into doing his bidding. Hat tip to Lucianne.com for the link.