When Joe Kennedy was laying the groundwork for his son's Presidential run, he met with Henry Luce, the publisher of the enormously influential TIME and LIFE magazines, who had to be brought on-board, if not to support JFK, at least not to savage him in print. To Luce's concerns as to whether JFK had any pro-Communist leanings, Kennedy reportedly told him, "You know no son of mine could ever be a communist," which was apparently good enough for Luce. (So the story goes, anyway.)
JFK IMHO was something like Obama - - appealing to the young and hip, who take for granted that he can't afford to say what he really tninks about hot-button issues like communism during an election campaign, but take their chances on him being young and fresh enough to break with the Old Guard once in office, only to realize afterwards that in order to win election, he HAD to have sold out to them before the campaign even started.
Yes, it is more than possible that JFK did not like Cuba. My point originally was that the invasion was really bipartisn, like all US aggression, not from one "party" or the other.