“01.12.61 Based on the authority bestowed by the Sugar Act of 1948, as amended, the U.S. President [John F. Kennedy] issued Presidential Proclamation 3440 (26 FR 11714) suspending the Cuban sugar quota until 30 June 1962 out of national interest considerations.” [Pro Embargo]
“John F. Kennedy (D). Timeline,” Cuba versus Blockade: Cuban People’s website, 2007