If all ~7 billion “foreigners” in the world were likely to be potential terrorists, and the 300 million Americans were not potential terrorists, this logic might make sense. But as recent events in Boston have shown, Americans can also be potential terrorists. These “foreigners,” moreover, also constitute the vast majority of the users and customers of Google, Facebook, Yahoo, and other American tech companies. So the idea that these companies would voluntarily and happily allow the U.S. government to spy willy nilly on these “foreigners” is both outrageous and offensive.