The Dems are right about one thing: It is highly unusual for an AG to get this directly involved in an investigation. Barr is careful and measured, he would only be doing this direct investigation if it was something very very big. He is not pursuing Mifsud, or other relative minnows, he is going after big fish, somebody high up that was deeply involved in sabotaging Trump with foreign help. Could even be Obama. Or Brennan and Comey.
Ill put money on Brennan, from his youth he did not have a loyalty to democracy or America (voted for Gus Hall, communist, for President). That points to a lack of understanding of, or respect for the sacredness of boundaries our Constitution enjoins. Its one thing to be a bleeding-heart liberal, something else to despise your own country.
Why would he go to Italy to listen to a recording? Theres more to it than that.