Yes, free travel and trade with Cuba should be allowed, because it would open the country up to freedom, and provide some necessary humanitarian aide through improving their economy. Cuba would be an extremely popular vacation spot, and it would give the people their jobs, and a reason to hope for a brighter future.
It is necessary to continue sanctions against the government of Cuba. The Communist regime of the Castro's remains a dangerous threat to the United States. America must take a hard like against the communists and prevent them from trading with other countries when possible. We should not be friendly with the communists.