***So why didn’t they deliver in 2008?***
They did. Think back on all the movies showing a black leader of the country.
Deep Impact and The Fifth Element immediately comes to mind.
http://badhowto.com/movies-with-black-presidents-in-the-last-25-years/
The Fifth Element (1997)
Deep Impact (1998)
Head of State (2003)
Idiocracy (2006)
2012 (2009)
Of all of those, by far President Camacho was the best.