Meet John Doe

The probe began in the office of Milwaukee County Assistant District Attorney Bruce Landgraf, though no one will publicly claim credit for appointing Mr. Schmitz, the special prosecutor. The investigation is taking place under Wisconsin's John Doe law, which bars a subpoena's targets from disclosing its contents to anyone but his attorneys. John Doe probes work much like a grand jury, allowing prosecutors to issue subpoenas and conduct searches, while the gag orders leave the targets facing the resources of the state with no way to publicly defend themselves. [More]

And here I thought "progressives" were all about transparency in government...