Imagine having the right to get a passport, but not having the right to get it stamped. That’s been the de facto policy in Cuba for half a century where people are basically barred from packing their bags to take a trip abroad just for fun. Under the current policy, any Cuban wanting to travel abroad needs permission to leave the country, a process that many find not only demeaning, but expensive. Any request can be turned down, often without the applicant learning the reason why, but always after paying $150 to process the paperwork requesting the exit permit. Between...