I give him 6 months before one of the many redneck, gun-toting, white supremists take hime out. They would be seething right now, having their sacred symbol (the presidency) tainted by that which they most hate (blacks, who are seen as little more than animals in their mind). There'll be a rush on which white supremist group is first to 'save the nation' by removing their new black 'master'.
The secret service are sure gonna be busy...