Paul Romer gives my preferred solution:
There is a natural complementary approach that is a much better bet than giving colonialism another chance–letting Haitians migrate somewhere with better governance and rules. This is the surest answer to the question posed in the beginning. It can give them access to the urban infrastructure, buildings, equipment, and the know-how that can support jobs in areas like garment assembly.
Immigration, like free trade, is the greatest poverty alleviation tool the world has ever seen.