Carter reached out to Castro . . . and Castro responded with the Mariel boat lift, making you pick up inmates from his prisons and mental asylums as the price of picking up political refugees or family members. Castro saw weakness, and emptied his prisons and mental hospitals onto the streets of Miami.
Obama reached out to Castro . . . and Castro responds by offering to trade convicted murderers and spies in U.S. jails for innocent non violent peaceful freedom loving democracy advocating Cuban political prisoners. Of course, Castro won't free them to express their opinions in Cuba. Castro wants to send them here, with their families.
It will be Mariel, Part II. And, people will still be sent to jail in Cuba for non violent expressions of political opinions.