This priebus fool had his opportunity...he blew it. LOL.
And now at the 6 month mark, it is time to move on.
Despite appearances, Trump has his sea legs and has had a chance to look around for his more permanent team (if there is such a thing in a 4 year term).
Kelly is first rate and a real kick ass Marine. He was grossly underemployed at DHS and news of his new position will erase away (Rinse off) the current chatter in the media of Sessions, military trannies, and "wherever."