U.S. Senator Tom Harkin (D-Ia), visiting Cuba to promote sales of Iowa farm products, speaks at a press conference at the end of his visit, in Havana April 24, 2003. Harkin called on Cuban President Fidel Castro to release the 75 dissidents jailed for conspiring to subvert the one-party communist society born from Castro's 1959 guerrilla revolution. REUTERS/Rafael Perez