The FBI's Secret Scrutiny

The FBI's Secret Scrutiny: "A national security letter cannot be used to authorize eavesdropping or to read the contents of e-mail. But it does permit investigators to trace revealing paths through the private affairs of a modern digital citizen. The records it yields describe where a person makes and spends money, with whom he lives and lived before, how much he gambles, what he buys online, what he pawns and borrows, where he travels, how he invests, what he searches for and reads on the Web, and who telephones or e-mails him at home and at work.

As it wrote the Patriot Act four years ago, Congress bought time and leverage for oversight by placing an expiration date on 16 provisions. The changes involving national security letters were not among them. In fact, as the Dec. 31 deadline approaches and Congress prepares to renew or make permanent the expiring provisions, House and Senate conferees are poised again to amplify the FBI's power to compel the secret surrender of private records."