What's behind Cuba's mass exodus?

Cuba saw its largest emigration of people last year since Fidel Castro's revolution in the 1950s. Most headed for the US over the border with Mexico, along with many thousands from other countries. So what's causing this mass exodus? And can conditions change for the people of Cuba?  Join host Laura Kyle. Guests:  Rosa Maria Paya - Founder of Cuba Decide. Helen Yaffe - Senior Lecturer in Economic and Social History at University of Glasgow. Andrew Selee, President of the Migration Policy Institute, Washington DC.