The announcement comes on the heels of a report that Trump called Haiti and African countries "shithole countries," a claim Trump denies.
"Haitians fought along USA soldiers in the Revolutionary War and we continue to be great contributors to American society", Altidor added.
While Trump has claimed that he never used the pejorative term about purported U.S. ally nation-states, multiple sources have confirmed that the president made the disparaging comments "repeatedly," cited by the Washington Post.
Notice of John Feeley's resignation came a day after Trump referred to Caribbean and African nations as "shithole countries".
Feeley's resignation was submitted prior to Thursday's controversial remarks.
Speaking to journalists at the State Department, he said, "Everyone has a line that they will not cross". But Under-secretary of State Steve Goldstein seemed to confirm as much in comments to reporters on Friday. "If the ambassador feels that he can no longer serve. then he has made the right decision for himself and we respect that".
Mr. Feeley is a Career Minister in the Senior Foreign Service and one of the Department's leading Latin America specialists. He said that he felt that he was no longer able to serve under United States President Donald Trump.