here is the flaw in your scenario:

Dominicans accept Haitians and DR turns into Haiti.

You become what you import.

not a Pareto arrangement, it's zero sum:  Haitians benefit at the expense of Dominican

not to mention the language barrier 


Bell_curve

Politics_And_Law

Haiti: Why Open Borders Don't Work in the Developing World

Rothbardian_fanatic

I was thinking the other day about how naturally this logic can lead to supporting imperial expansion.

If people are purely moving from country A to country B because B has better institutions, then the humanitarian thing for B to do is bring its institutions to A.

If Hispaniola were entirely administered by the Dominican Republic that would clearly be an improvement for the Haitian people and it might also be an improvement for the Dominicans who don't have a refugee problem anymore.

Seductively dangerous reasoning