http://en.wikipedia.org/wiki/United_States_and_the_Haitian_Revolution
http://www.commondreams.org/views/2010/01/17/why-us-owes-haiti-billions-briefest-history
]Louis Andre Pichon, the chargé d’affaires of France, felt that Jefferson would help to put down the slaves due to the fear of black rebellion in the U.S. Jefferson had, in fact, pledged to help starve out Toussaint L'Ouverture, Haïti's rebel leader, but due to fears of the ambitions of Napoleon Bonaparte Jefferson refrained from such action
http://www.commondreams.org/views/2010/01/17/why-us-owes-haiti-billions-briefest-history
After the 1804 revolution, Haiti was the subject of a crippling economic embargo by France and the US. US sanctions lasted until 1863. France ultimately used its military power to force Haiti to pay reparations for the slaves who were freed. The reparations were 150 million francs. (France sold the entire Louisiana territory to the US for 80 million francs!)
Haiti was forced to borrow money from banks in France and the US to pay reparations to France. A major loan from the US to pay off the French was finally paid off in 1947. The current value of the money Haiti was forced to pay to French and US banks? Over $20 Billion - with a big B