"America First!"
All countries would be wise to remember that during diplomatic relations with the current administration running the United States of America.
The strongest move, that Haiti could make would be to hint they are considering inviting China to make infrastructure improvements to their country. Play both sides against the middle and cut the best deal you can. Most world politics is often no better than the devil you know versus the devil you do not know.
The United States of America cares so little about Haiti that the Secretary of State could not even be bother to meet with the President of Haiti in a meeting room during his visit to the Dominican Republic. They stood in the hallway and spoke. In my opinion that was straight up disrespectful and diplomatic dis of the highest order.
So if I was the President of Haiti and the United States of America wanted something from me. I would tell them to I am looking for money for infrastructure development in my country and I am going to sit down with China right after I finish talking to you here in the hallway. They are waiting inside the room.