Hundreds of thousands of Cubans are turning out as the late Fidel Castro's remains are paraded across the island nation before Sunday's funeral. Much has changed since Fidel seized power in 1959. The Obama Administration has begun to normalize diplomatic relations and relax economic sanctions. But Donald Trump says he'll demand more change from Castro's brother, Raul, creating uncertainty — in Cuba itself, for Cuban Americans and recent investors. What role do hardliners in both countries still have to play?