Joseph P. Kennedy Sr was friends with D/FBI J. Edgar Hoover and became an informant for him on Hollywood celebrities with communist tendencies.
As a US Senator, JFK never passed one simple purity test from Eleanor Roosevelt. JFK avoided publicly condemning US Senator Joe McCarthy and his hideous communist witch-hunts because these Irish families were both conservative and friends.
His entire life, wealthy JFK walked around without a nickel in his pockets to even buy a stick of gum. The Kennedy family scion always borrowed money from friends and classmates who would send a bill to his father. Before he embarked on a trip as POTUS, JFK said: "Gosh, I don't have a cent on me!" His father asked a maid to quickly get him an envelope full of cash.
JFK would donate his considerable POTUS salary to charity.
In April 1961, former PT Boat 109 Commander JFK asked a man with 52 years US Army experience, and who commanded the Pacific Theater of Operations during the Second World War, about a growing problem JFK felt the US was facing: Vietnam. General of the Army Douglas MacArthur (Ret.) warned the young POTUS: "Make Japan, Formosa, and the Philippines your red lines-- not Vietnam. Concentrate on domestic issues." [sic].