I had the thought this morning when I read somewhere that some guy on CNN pointed out that although Mueller agreed to ask Trump written questions he in no way ruled out an interview. Who else but Trump would have any colorable argument about not appearing before a GJ and would be important enough that the Court and Judicial system would engage in the kind of extraordinary secrecy that has been seen?
At first I thought maybe Pence, but Trump for sure the court would assist in not creating the kind of media crazy that would be evident if it was a hearing on Trump needing to appear before the GJ.
BTW, I too hope that Mueller will challenge the 20-y o DOJ Policy Opinion about no indictment. Hope Mueller indicts!!!