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Can I Withdraw From a Proffer Agreement?
The Short Answer
You can withdraw from a proffer agreement. You can stop the session, instruct your attorney to end the meeting, stand from the conference table in the United States Attorney’s Office, and leave. The proffer agreement is not a subpoena. It is not a court order. No one will restrain you from exiting the room.
That is the answer to the question you asked. It is not the answer to the question you need.
What you need to know is whether withdrawal undoes what the session has already accomplished, whether the words you spoke in that room return to you once you have decided you no longer wish to cooperate, whether the government’s knowledge of what you disclosed can be placed back inside a container it was never designed to hold. The answer to that question is no. And the distance between the first answer and the second is where most of the damage lives.
The Protections a Proffer Agreement Provides
Federal Rule of Evidence 410 and Federal Rule of Criminal Procedure 11(e)(6) establish a baseline: statements made during plea discussions are inadmissible against the defendant who made them. A proffer agreement puts this protection in writing. The government agrees not to use your direct statements in its case in chief. You agree to tell the truth.
The protection sounds broader than it is. The standard proffer letter issued by most United States Attorney’s Offices contains language that permits the government to use your statements for impeachment if you testify at trial in a manner inconsistent with what you said during the session. It permits the government to pursue any investigative lead your statements suggest. It requires you to waive the protections of Kastigar v. United States, which would otherwise obligate the government to prove that its evidence derived from sources independent of your immunized testimony. Under the typical proffer letter, the government need not prove independence.
In United States v. Mezzanatto, the Supreme Court held in 1995 that a defendant may waive the exclusionary provisions of Rule 410 and that such waivers are enforceable so long as the defendant entered the agreement knowingly and voluntarily. That holding addressed impeachment use. The circuit courts have since extended it. The practical result is that the proffer agreement you signed, if it resembles the standard form, has already granted the government rights that withdrawal does not rescind.
Derivative Use
The concept that performs the most work in a proffer agreement, and receives the least attention from the person signing it, is derivative use. Your statements cannot be introduced at trial to prove your guilt. But the information contained in those statements (the locations, the names, the account numbers, the chronology of events that only you could provide) can be pursued through separate channels. If you mentioned during the session that a co-conspirator maintained financial records at a particular address, the government may obtain a warrant for that address. If you referenced a bank account, the government may issue a subpoena. The records recovered through those leads are admissible.
This is the mechanism that renders withdrawal from a proffer agreement a procedural gesture rather than a substantive one. You may end the conversation, but you cannot recall the information. The government now possesses knowledge it did not possess before you sat down, and no provision of the agreement, no letter from your counsel, no motion filed with the court will require the government to disregard what it has learned.
Whether the court intended this architecture or merely permitted it to develop is a question worth sitting with.
In a fraud investigation several years ago in the Eastern District, a defendant proffered for two days before withdrawing cooperation. The government proceeded to trial. The government introduced no statements from the proffer. It did not need to. The investigation that followed the session, guided by the information the defendant had provided, produced documentary evidence sufficient for conviction on three of the four counts. The defendant’s withdrawal was, in the language of the proffer letter, respected. The derivative use provision had done its work before the defendant decided to leave.
You sign the proffer letter and then you discover what the proffer letter permits.
Walking Out
You may stop a proffer session at any point. Your attorney may request a break, consult with you in private, and advise that the meeting should end. The government cannot compel you to continue. This right is real and unqualified.
The practical consequences of exercising it are not small.
A proffer session that ends before the government has obtained what it expected signals that you were unwilling to complete the disclosure. Prosecutors interpret this as evidence that there is more to disclose. The likelihood of indictment increases. The prosecutors who sat across from you have now heard enough to know what questions to ask other witnesses, what documents to subpoena, what financial records to examine with greater care. They will proceed without your cooperation, equipped with a partial map of the territory you had begun to describe.
And there is a quieter consequence the case law does not address. The prosecutors remember what you were willing to say. They remember the moment you stopped. The distance between those two points tells them something about the shape of the information you chose to protect.
Impeachment and the Constraint on Defense Strategy
If you proffered and then withdrew, and the government proceeds to charge you, the proffer agreement’s impeachment provision remains active. The scope of that provision depends on the jurisdiction and on the language of the letter you signed.
In the Second Circuit, United States v. Velez established that a proffer agreement permitting the government to introduce your statements whenever the defense presents contradictory evidence or arguments, whether or not you testify, is constitutional and enforceable. Barrow had previously read the waiver provision to cover any evidence offered or elicited on behalf of the defendant. Oluwanisola placed some limit on this, holding that a cross examination question attacking a government witness’s credibility, without a factual assertion contradicting the proffer, does not trigger the waiver. That is a narrower protection than it appears. Your attorney must construct a defense that never contradicts, in any dimension, anything you admitted in the proffer session. The statute is not entirely settled on this point across circuits, which is itself part of the difficulty.
What this means in practice: the proffer agreement does not eliminate your right to mount a defense. It determines which defenses remain available. The determination of what remains available is made after the fact, measured against statements you provided before you knew what the government’s full case would contain.
Before any client enters a proffer session, we conduct what amounts to a trial-preparation exercise with the client, not to rehearse testimony (which would be improper) but to identify every statement that could later constrain the available defenses. If a statement would close a door the client may later need open at trial, we evaluate whether the proffer is worth the door it closes. The proffer letter does not describe this calculus. It cannot. The letter is a contract; the calculus is a prediction about what the case will look like in six months, once the government has completed the investigation your proffer initiated.
Timing and Practical Consequences
Most people who ask whether they can withdraw from a proffer agreement are not asking a legal question. They are asking whether a decision can be undone.
The window in which withdrawal would produce a meaningful difference is before the first sentence is spoken in the proffer session. Once the session begins, every disclosure transfers information from you to the government, and that transfer is not reversible by any mechanism the law provides. The Kastigar waiver eliminated the one procedural safeguard that might have required the government to construct its case without reference to your disclosures. The derivative use provision ensured that the investigation could follow any trail your statements suggested. The impeachment clause ensured that your future testimony would be measured against what you said in the room.
Withdrawal, in this context, means that you have ceased to provide new information. It does not mean the information already provided has been returned. There is no motion for that. There is no rule. The government’s institutional memory does not contain a mechanism for reversal.
One of our clients, in the course of a white collar matter that consumed something like fourteen months, described having proffered and then withdrawn as living in a house with a door that opens from both sides but locks from neither. The metaphor was imprecise, as metaphors tend to be. But the architecture was recognizable.
For anyone weighing this decision, the conversation begins before the proffer letter arrives. It begins with an assessment of the evidence, the exposure, the available defenses, and the realistic probability that cooperation will produce the outcome the government’s offer seems to promise. A consultation is where that assessment begins, and it assumes nothing.