Who Really Was America’s First Black President? Not that it really matters, but I think it was President Eisenhower.
Snopes does not say True, or False. They simply say “unproven”.
However, this fact has been well documented. Eisenhower's political opponents used this fact against him. The truth is most people in America have mixed race ancestors. In Mexico, the Spanish mixed with the natives to where most Mexican people are mixed race. In America the majority of people are mixed race individuals. The labels commonly ascribed, black, white, etc. only denote the judgment of appearance. Keanu Reeves is listed as white but his ancestors are half native Hawaiian. Likewise, Eisenhower is listed as white but he has African ancestry.