I believe this is the real reason he wont show his BC. His race is not listed as black/negro.
Roger that. It's got to be something simple enough so that the the room-temp IQ voters who support him would understand it, and change their vote (or not vote at all).
"He not black, he white!", is simple enough. I figure it's either that, or his father isn't who he said it was.
It's more fun to speculate with all of the conspiracy theorists on FR, but in the end Occam's Razor is the most likely to win. :-)