Were misrepresentations made by Comey and other Obama/Clinton swamp rats to Rosenstein in order to falsely induce the appointment of a Special Counsel?
Did Rosenstein know there was NO criminal investigation of Trump going on in the FBI, contrary to all the reporting in the press?
And did Rosenstein know there was no legitimate basis after months of counterintelligence investigation by Comey and the Obama intel agencies for even beginning a criminal investigation of Trump or the Trump campaign regarding alleged Russian hacking?
If Trump was not under criminal investigation and there was no legitimate basis to commence a criminal investigation of Trump, then what was the “conflict of interest” requiring the appointment of an independent Special Counsel?
Wasn’t there in fact NO conflict of interest, because the impression given in the press from anonymous leakers that that there was a legitimate basis for a criminal investigation of Trump or his campaign was false?
Shouldn’t the appointment of the Special Counsel be nullified because it was based on false inducement?
I suspect that's an question for which there are no precedents, and therefore it would undoubtedly be fought through the entire court system, up and down, several times, before it was resolved.
And even then, the resolution would probably be seen as politically tainted by both sides, and would be something of a pyrrhic victory in any event.
I'm not saying DJT shouldn't try it; there may well be more subtle reasons for going forward that I can't visualize.
I would think that the President's team would wait for more information to come out about Comey and the way he operated as FBI director and before. More damning evidence about Hillary and her capon cabal will surely come out as well, the combined effect will probably be to make Mueller's job look more and more superfluous.