This robot is incorruptible. Perfect in every other way. Is intelligent and is all knowing. (A bit like Skynet). Programmed to serve only the interests of the common people and no other vested interests. Would you vote for the robot. He will probably have an army of robot minions as secretary and staffers and shyt, just to keep the white house and the arms of government human and hence corruption free. 
presidents dont let sympathy dictate policy. They only serve the interests of the elite and at times, the self interests of the nation. If that was the case, the US wouldnt be playing empire building in Iraq and the Arab world whilst intervening and fuxking up every country they dont have a base in so that theyre capitalists can exploit their resources