alejandro cial portes, and carmn lomaline. back with a final thought on people on the move and the difference he between them. stay with us. it's "inside story." ♪ ♪ >> people around the world are on the move. fleeing from failing reigns and dwindwindling harvests. just in recent years millions have left their home towns to be homeless in their own countries or cross the border to become refugees abroad. even after long term residents in the u.s. families, work histories, local ties, millions of cubans can't stay in the united states. legal residents if they so desire, already on the road to american citizenship. no wonder, people are willing to take the chance on improving their lives. it's an advantage rarely offered haitians, even when they suffered under murderous and repressive regimes. an advantage rarely offered dominicans, suffering under governments tormented by their uncle sam. two candidates for president, marko rubio and ted cruz. both cuba and mexico should stay just as they are. and analysts who have argued that