Not too surprised about FDR knowing of planned attack. Seems to be status quo for the hero of Democrats. Just another dishonest Democrat.
I had heard talk that FDR knew of the planned attack but let it happen to leverage the event to motivate the American people to pull the country out of the depression, which basically lasted until the war effort. Prior to that, his commie policies dissuaded people from being very productive because - well, why buy the cow when the government will steal it and give the milk away.