Here is a thread you may want to read through. It’s a couple years old, but perhaps there’s some useful information. Apologies, I don’t have time to read through it right now.
HBCUs offering aid to international students
@ChangeTheGame had two students at Howard, although they were US citizens. Perhaps they have some insight.
As many people are busy or traveling over the holidays, responses may be limited for the next week or so. 
Keep asking questions and I’m sure you’ll get more guidance once people are back to their normal routines.