Rule by imported foreigners has been a method of imperial oppression in some corners of history. The account of Marco Polo is instructive on this, as he traveled throughout Asia, visiting many kingdoms and empires. He recounted his learnings of statecraft in his autobiography, “The Travels of Marco Polo.” He described the control of China (Cathay) by the Great Kublai Khan of the Mongol Empire (Tartars) by the employment of foreign governors. One particular nasty governor was the Muslim (Saracen) Achmath, chief viceroy to the Khan. He wrote: You will hear further on how that there are twelve persons appointed...