Don't bring up points about which you have no clue!
Obama was an adjunct professor. In academia, those types commonly get away with styling themselves as "Professor", even though they don't have tenure, not that they could care less (for obvious reasons, if you know any examples). In any case, Obama selected the reading list, the fact was published before the election, and that's the only point that counts.
BTW, I know an adjunct professor at a certain graduate school who got paid forty large (plus expenses and his choice of overnight female, which he declned as far as we know) to fly half way around the world and give a two day seminar on certain critical aspects of business strategy. His university salary was low six digits, but that ain't the half of it! Not close! Nice work if you can get it :)!