Haitians of German descent* had a stranglehold on Haitian ports and maritime commerce. Wasn’t that a casus belli? We could have de-Germanized those industries, handed them back to majority along with Haitian government and it would have been a win-win without occupation.

*Yes I know what Haitian constitution said about everyone being black but unlike Polish Haitians German Haitians resolutely intermarried only with each other to the point of inbreeding like Greeks in Ancient Egypt.