I don’t understand Whoopi’s concerns. Slavery was outlawed by the 13th Amendment. Why pander to a looney tune? It makes it look like she said something intelligent.
Had I been in that chair and not Sen. McCain, (who would never do this, not allow the sound-bite), I would have said to her, "Of course you need to be worried if I win the White House, because, as we all know, when slavery was an accepted practice in this country, all those presidents belonged to the Republican party. Oh ... wait ..."