“11.02.64 The United States government said that all Cuban nationals who would work at the Guantánamo Naval Base (around 2500) would be fired unless they agreed to become permanent residents of the Base or would spend all their income in U.S. dollars there. Likewise, if their work would be over or if their incomes were spent at the Base, the result would be a loss of U.S.$5 million in hard currency for Cuba.” [Pro Embargo]
“Lyndon B.Johnson (D). Timeline,” Cuba versus Blockade: Cuban People’s website, 2007