the suggestion that he is a member of Yale's Skull & Bones is obviously incorrect
No. It is ironic. I won't post the definition here, but suffice to say if someone from an Anglo-centric nation says something that may not be in keeping with the thread, it is probably the use of 'irony'.
For the record:
-the 41st and 43rd Presidents are card-carrying members of the Yale 'Skull & Bones' - as was their Nazi-worshipping, grave-desecrating sire, Preston Bush
-however, all of them ARE NOT
(probably) Freemasons. I don't base this on any hard evidence. Only the suspicion that even the ******* Masons have to have some sort of standards about who they let in!
-However, if a paternal submission to Masonry is a prerequisite to possible membership (possible, I say) - then the SON of Admiral John Sidney McCain, Commander in Chief of the Pacific Fleet during the Vietnam War, may be