This article offers practical advice for professional people (lawyers included) and business executives who are served with a federal grand jury subpoena.

There are two types of grand jury subpoenas, ad testificandum, for an appearance to testify, and duces tecum, to produce documents or other physical items. There are three precautions that I offer to all people who are served with a grand jury subpoena. One, refrain from answering any questions asked by the agent who serves the subpoena, except acknowledging your name. You will gain nothing by answering the agent’s questions.