The Syrian-Lebanese have a long history in Haiti, and in fact they account for most of Haiti’s very wealthiest families. They are also sometimes resented by the other Haitians for their extreme commercial success. Here is one illustrative but not fully objective account from Wikipedia:
Since the early twentieth century there was a Syrian community in Haiti. This consisted of roughly 500 people, mainly engaged in trade and many of them were Syrian Americans. The entire business community of Syrians, however, tended to sell their products to the United States. Over time, the importance of these merchant foreigners grew, reaching positions in the political order of the country. It is of enormous importance to the country, that surpassing most of the Haitians in government (one that was formed by the social elite of Haiti, against a poor majority), caused major uprisings against the Syrians and the idea widespread among Haitians was that they should be deported. Therefore, the Syrian American club sent a letter to the U.S. State Department of Washington D.C., explaining the reasons why the island was purchased for trade with the U.S. and asked for help and advice from the U.S. Federal Government. At that time the Syrians had also addressed the majority of imports of goods to Haiti, both in the field of provisions as in beverages. Syrian traders also were, at present, the only foreign traders willing to work under native conditions than other groups of traders that were rejected. So, they sold wholesale. However, these traders were occupied all trades with the country, which made them gain rejection of a significant part of the population. Thus, the Haitian government launched a new political program that limited the Syrian trade in the country.
Of course Haiti could take in more “Syrian-Lebanese” too, but this would be unpopular in some circles because…the previously Syrian-Lebanese have been…too successful.