“23.10.62 As a result of the Joint Resolution passed by the Congress on 3 October 1962 (Public Law 87-33), Presidential Proclamation 3504 was issued, ordering a ban on offensive weapons and related materials deliveries to Cuba, and gaving powers to the Secretary of Defense [Robert McNamara] to enforce that order. This provision expired on 21 November, when Presidential Proclamation 3507 was issued, putting an end to the authority given to the Secretary of Defense and revoking the orders issued to the troops under the President’s command.” [Pro Embargo]
“John F. Kennedy (D). Timeline,” Cuba versus Blockade: Cuban People’s website, 2007