This whole situation is the fault of the US and France. This is their 4th invasion of Haiti, they never solve anything, they just do this shit to further oppress the Haitian people and steal more of Haiti's resources.
The only time anything good came out of these interventions was the restoration of President Jean-Bertrand Aristide, who seemed to be the only recent head of state who actually cared about Haiti. And even then, the United States removed him from power in 2004.
I'm not sure which is funnier: the idea of the US preparing for anything, or the idea of people being surprised by US intervention. Especially in Haiti, where there's a long record of US intervention to begin with.
Why? Because it would be unfair to those 2500 if all the others don't die too?