For nearly twenty years in the United States a law called CALEA (Communications Assistance for Law Enforcement Act of 1994) has been on the books. To summarize, CALEA set the federal requirement that telecommunications companies (phone companies, long distance companies, cellular carriers, and so forth) had to modify their infrastructures such that various forms of wiretapping of customers had to be possible upon presentation of a warrant. Contrary to popular belief, there are methods of surveillance other than recording a conversation. The simplest involves making a list of every phone number that a particular number calls, when the calls were …