Look, I understand that some people are up in arms over the fact that they chose someone without darker skin and in some way I can see why they are. However, take a moment and see this from the other side as well. Considering the fact that the writers are taking enough of a risk tweeking a sitting President about some of his policies (ie using drones to kill enemies both foreign and domestic, including citizens without due process), do you really think that they are going to stoop to "whitewashing" for PC purposes? I don't think so. I really believe they had someone picked out, it didn't work and they liked how Cumberpatch did the role. Nothing more, nothing less and in reality, I don't think it done any less justice to the role in question.