I think it's obvious by now I was trying to make a point of principle, it's allegorical, I don't know what the AZ code of ethics say about this or the DOJ or whatever the US AG lives by.
But here the metaphor is the people of America - or some of them who want a fair and impartial decision by Lynch - are essentially a "party" here. People who feel that way do not want to see the "decider" of the indictment question meeting privately with Hillary or Bill. It's bad if they're social, chummy, because then Lynch appears sympathetic. It's bad if they discussed the actual case, because then Lynch is subject to influence or giving away inside baseball at a minimum.