in 1992 a grand jury in the iran contrau case came out just days before. >> in the final days of the campaign the last thing george bush needs is a reminder of the arms for hostages deal with iran. >> a former indictment places bush at a key meeting. >> that was a huge deal. nowadays a key from mueller is that he does have to follow those doj rules or norms if you want to call it that which would appear to include the 2012 memo. because the rules that give mueller his power still say he has to notify the attorney general of key events in the probe. and since sessions accused himself that means rod rosenstein, which goes back to question of what mueller would do if he's in a position to make major steps or file charges if the election approaches. you can imagine people on both sides having strong opinions on that. if he were to wait for for example after mid-terms with a big charge, some would say would