“…if it develops that Oswald is the man who did the assassination or was involved in it, then his pro-Cuban and pro-Soviet activities will come into mounting prominence.”
–from an FBI memo of Nov. 22, 1963, attributing this remark to Deputy Attorney General Nicholas Katzenbach. The memo goes on to say: “…if Oswald is so identified, the State Department should be advised as there are definite foreign policy considerations and decisions here.”
See House Committee on Assassinations Report., Vol III pg. 665.