“13.07.62 Public Law 87-535 was passed to amend the Sugar Act of 1948, whose section 3 cut back the Cuban sugar quota from 96 to 57.77% of the total sugar quota; it banned U.S. purchases of sugar from countries with which the United States did not have diplomatic relations and prorated the Cuban quota among the other sugar suppliers of the American market.” [Pro Embargo]

“John F. Kennedy (D). Timeline,” Cuba versus Blockade: Cuban People’s website, 2007