From what I know of Jack Kennedy's earlier life, he would've been a Claw. His older brother was supposed to be ~the President~, and he was a sickly kid who took to history and kind of wanted to just be left to his books (though he was a Kennedy so he had the requisite competitive spirit etcetery). What we see of him in the Senate/Presidency is him trying to take on a role that his Slythery dad put on, but his first tactic as President was the "best and brightest" -- i.e., "let me surround myself by my brilliant friends". That SCREAMS Ravenclaw to me, because you see who he respected and trusted. I think Robert was more the Gryffindor of the bunch, very crusadery. Oh God I have an icon of him, too. *uses all the icons*