Why this page exists alongside the national one
Our national grand jury subpoena page explains the paper itself. What each kind of subpoena orders, what your rights are, and the mistakes that turn witnesses into defendants. Read it for the complete picture. This page answers the California questions. What a defense lawyer actually does for you between service and compliance, which district controls your matter, which prosecutor office decides charges, and which jury instructions a California courtroom uses if testimony turns into a new charge.
The short version is that the order is federal but the forum is local. The subpoena carries federal authority wherever it reaches you. The case behind it lands in a specific California district, before a California based federal judge, under Ninth Circuit rules. Those local facts shape what your lawyer can do and where you would appear, so they deserve their own page. Start with our California federal courts hub for the map, then come back here for what to do about the paper in your hand.
What this paper is
Department policy puts the governing rule in one sentence. "Subpoenas in Federal proceedings, including grand jury proceedings, are governed by Rule 17 of the Federal Rules of Criminal Procedure." A federal subpoena is a written court order that commands you to do one of two things. Come and testify under oath, or bring specified records and objects with you. Sometimes it commands both.
The testimony kind must state the court name and command attendance at the time and place it specifies. The records kind goes further. "A subpoena may order the witness to produce any books, papers, documents, data, or other objects the subpoena designates." That phrase is broad on purpose. Emails, phones, ledgers, contracts, bank records, and business files can all be designated, and the court can direct you to produce them before trial or before they are offered in evidence.
A subpoena is not a request and it is not an accusation. It is a command, and disobedience has its own consequence. "The court (other than a magistrate judge) may hold in contempt a witness who, without adequate excuse, disobeys a subpoena issued by a federal court in that district." That contempt power is separate from any charge the grand jury may be investigating. To understand the body behind the paper, read our overview of the federal grand jury. To see where this stage can lead, read about the federal indictment process.
What a defense lawyer does at the subpoena stage
A subpoena usually means one of a few things. You have been ordered to testify, ordered to produce records, or both, and your name or your files are inside a federal investigation. None of this means you have been charged. All of it means what you do in the next days can matter as much as anything that comes later.
A defense lawyer at this point works in general terms as a buffer, a scope tester, and a preserver. The lawyer takes over all communication so agents and prosecutors stop contacting you directly. The lawyer reads the subpoena the day it arrives, calendars every deadline, and tests what it really requires. Is the records demand overbroad. Is the return date negotiable. Is there a valid privilege over some of the material. Should the court be asked to quash or narrow the order. The rule answers that last question directly. "On motion made promptly, the court may quash or modify the subpoena if compliance would be unreasonable or oppressive." That motion is judged on speed and on specifics, which is why counsel needs the paper immediately, not the week it is returnable.
The lawyer also finds out your status before you speak. Department policy states the rule plainly. "A grand jury may properly subpoena a subject or a target of the investigation." A subject "is a person whose conduct is within the scope of the grand jury's investigation." A target is further along, someone as to whom there is "substantial evidence linking him or her to the commission of a crime and who, in the judgment of the prosecutor, is a putative defendant." These labels move as evidence builds, sometimes without notice, so never assume you are only a witness from the tone of a phone call. If you also received a letter saying you are a target, read our page on the federal target letter alongside this one.
Finally, the lawyer opens a channel with the prosecutor office for your district, because charging decisions belong to prosecutors and negotiation over scope or timing runs through them. Sometimes a subpoena demands an immediate response, the kind prosecutors call a forthwith subpoena. Policy says that kind "should be used only when an immediate response is justified and then only with the prior approval of the United States Attorney." If your subpoena demands production right away, that urgency is itself information, and it makes same day counsel more important, not less.
Answer, refuse, or challenge
You have rights at this stage, but each one needs a lawyer to use safely.
The privilege against self-incrimination. Department policy requires that subpoenaed targets and subjects be warned on the record, in these words. "You may refuse to answer any question if a truthful answer to the question would tend to incriminate you." The warnings continue. "Anything that you do say may be used against you by the grand jury or in a subsequent legal proceeding." That protection covers one question at a time. It does not give you a blanket right to stay home, and asserting it question by question, on the record, is itself a skill.
The right to counsel, outside the room. Your lawyer cannot sit beside you while the grand jury sits, but the warnings promise access. "If you have retained counsel, the grand jury will permit you a reasonable opportunity to step outside the grand jury room to consult with counsel if you so desire." Before the appearance, rehearse this with counsel. Answer only the question asked, pause before every answer, and step out whenever a question touches criminal exposure or topics you prepared to handle with care.
Contempt for refusal. If a witness "refuses without just cause shown to comply with an order of the court to testify or provide other information," the court "may summarily order his confinement at a suitable place until such time as the witness is willing to give such testimony or provide such information." Confinement lasts no longer than the proceeding or the grand jury term, and the statute sets a hard ceiling. "but in no event shall such confinement exceed eighteen months." This is coercive, not punishment. The door opens the moment you comply. Because the line between a valid assertion of privilege and contempt is thin, never test it without counsel guiding each refusal.
The records trap. Destroy nothing after service
The most dangerous thing a subpoena recipient can do is also the most human. Clean up. Delete messages, shred files, wipe a phone, ask an employee to lose something. After a federal subpoena arrives, that cleanup can become its own felony, separate from whatever the grand jury was investigating.
The statute reaches anyone who "knowingly alters, destroys, mutilates, conceals, covers up, falsifies, or makes a false entry in any record, document, or tangible object with the intent to impede, obstruct, or influence the investigation or proper administration of any matter within the jurisdiction of any department or agency of the United States." A person who does so "shall be fined under this title, imprisoned not more than 20 years, or both." Note that the law covers acts done in contemplation of a matter as well, so waiting until agents knock is not the test. The question is what you did and why.
If a destruction charge is ever sentenced, it falls under Guideline section 2J1.2 for obstruction of justice. The base offense level is stated as "Base Offense Level: 14." It rises by 3 levels where "the offense resulted in substantial interference with the administration of justice," and by 2 levels where the offense "involved the destruction, alteration, or fabrication of a substantial number of records, documents, or tangible objects." These are starting points for a calculation, not predictions. The facts of a case change everything, and guideline ranges are advisory at sentencing.
The practical rule is simple. The day a subpoena arrives, preserve everything it covers and everything around it. Messages, emails, phones, business records, backups, and anything a lawyer would need to review. Tell your lawyer exactly what exists and where it sits, and touch nothing until counsel says otherwise.
The testimony trap, and how a California jury would be instructed
Lying to the grand jury is a separate federal crime. The law reaches anyone who "in any proceeding before or ancillary to any court or grand jury of the United States knowingly makes any false material declaration," and provides that the offender "shall be fined under this title or imprisoned not more than five years." Note two words. The statement must be knowingly false, so an honest mistake is not enough for conviction, though proving the difference is its own fight. And it must be material, meaning capable of influencing the proceeding, not trivia. Do not rely on taking words back. The safest course is to answer truthfully, briefly, and only on counsel preparation, or to assert the privilege where it applies.
This is where California forum matters. If a false declaration charge were ever tried in a California federal courtroom, the jury would hear the Ninth Circuit model instructions, not a nationwide generic charge. The Ninth Circuit model instruction for false declarations before a grand jury or court lays out four elements the government must prove beyond a reasonable doubt. That the defendant testified under oath in or next to a court or grand jury proceeding. That the testimony was false. That the defendant knew it was false. And that the false testimony was material, meaning it "had a natural tendency to influence, or was capable of influencing" the court or the grand jury. Do not walk into the grand jury room counting on technical defenses you read about online. If the testimony goes badly, the instructions the jury hears will be these.
Which California district controls your matter
Congress divided the state by statute. It provides: "California is divided into four judicial districts to be known as the Northern, Eastern, Central, and Southern Districts of California." Your matter stays in the district where it would be filed. A case built in Los Angeles is a Central District matter from start to finish. One built in Sacramento is an Eastern District matter. Transfer between districts is rare and needs a specific legal reason, so find the district named in your papers first.
Court cities are fixed by the same law, so you can tell from your papers where appearances would happen. "Court for the Northern District shall be held at Eureka, Oakland, San Francisco, and San Jose." "Court for the Eastern District shall be held at Bakersfield, Fresno, Redding, and Sacramento." "Court for the Central District shall be held at Los Angeles and Santa Ana." "Court for the Southern District shall be held at San Diego."
Each district has its own United States Attorney Office, and that office makes the charging decisions on cases built in its territory. The Central District office "serves the seven counties of Los Angeles, Orange, Riverside, San Bernardino, San Luis Obispo, Santa Barbara, and Ventura." The Northern District "stretches from Del Norte County in the north to Monterey County in the south." The Southern District "includes San Diego and Imperial Counties." The Eastern District covers "34 counties reaching from the Oregon border in the north down to Bakersfield in the south." When your lawyer opens a channel with the government, it runs to the office for your district, not to a central headquarters. That is one more reason the district named in your papers is the first fact to pin down.
What to do and what not to do
If a federal subpoena has entered your life, act early and carefully.
Do get a federal defense lawyer before you testify, produce records, or speak to agents. Do read every subpoena the day it arrives and calendar every deadline. Do preserve everything. Messages, emails, phones, business records, backups, and anything a subpoena covers. Do tell your lawyer exactly what you were asked and what you answered after every appearance. Do step out of the grand jury room to consult counsel whenever you are unsure.
Do not ignore a subpoena, skip an appearance, or assume the matter will pass. Do not destroy, hide, or alter any record after learning of an investigation. Do not discuss testimony with other witnesses, align stories, or ask anyone to withhold information. Do not try to talk your way out of target status by calling the prosecutor or agents directly. Do not post about the case, and do not put facts in writing to anyone but your lawyer.
The penalties described on this page are statutory maximums, meaning the most the law allows, or guideline starting points, not forecasts of any person sentence. A 20 year maximum for destroying records, a 5 year maximum for false declarations, and an 18 month ceiling for civil confinement describe what the law permits at its edge. What actually happens turns on the facts, the charges filed, the evidence, and the judge. Treat every number here as information, not as a prediction about your case.