Supreme court justices, presidents/prime ministers (and not just of the US), corporate CEOs (US, Europe and the rest of the world), investment bankers, private equity investors, hedge fund managers, leading scientists (including Nobel prize winners), journalistic thought leaders, most successful entrepreneurs. And, that is just the tip if the iceberg. In other words a disproportionate percentage of those who are shaping the world were educated at about 20 universities, most of which are in the US.