Heh, perhaps a cynical countersuit would be in the works...that is suing West Africa for selling the "slavery angle" to the Yankee traders of mercantile America in the 17th century. Since then the U.S. has been sorely injured from the effects of Africans selling their people as slaves.
More appropriately, the suit to which you refer should include Arabs, Dutchmen, Englishmen, and African tribal chiefs and their descendants -- some of which, ironically, would include Brown and his folks.
The biggest problem likely would be identifying and locating his daddy for service of process...