Federal Proffers and "Queen for a Day" Agreements: The Risks and the Rules

What a Proffer Is

In a proffer session, you, your attorney, an Assistant U.S. Attorney (AUSA), and one or more federal agents meet, and you answer questions about your knowledge of the conduct under investigation. It happens under a written proffer agreement (the "queen for a day" letter) that spells out how your statements may and may not be used. The legal backdrop includes Federal Rule of Evidence 410 (statements made during plea discussions) and the immunity principles from Kastigar v. United States.

What the Agreement Does — and Doesn't — Protect

A typical proffer agreement provides that the government won't use your statements directly against you in its case-in-chief. That protection is real but narrow. Standard agreements usually still allow the government to:

• Use leads derived from your statements to find other evidence (so-called derivative use);
• Use your statements to impeach you if you later testify inconsistently;
• Prosecute you for false statements if you are not fully truthful; and
• In many agreements, use your statements if you take a position at trial that contradicts them.

There are also common carve-outs — for example, statements about a separate crime of violence may not be covered by a standard proffer, so specific immunity for particular issues must be negotiated before the conversation.

What this means for you: A proffer protects honesty, not dishonesty. If you guess at facts, minimize your involvement, or reveal conduct the government hadn't yet connected to you, the session can backfire badly. Because the agreement is a contract, the exact language matters — which is why no one should attend a proffer without a written agreement, clearly defined topic boundaries, and a plan for how the information actually helps them.

When a Proffer Makes Sense

A well-structured proffer can avoid an indictment, narrow the charges, or set up a cooperation pathway that leads to a § 5K1.1 substantial-assistance motion at sentencing (or a post-sentencing Rule 35(b) reduction). But it only makes sense when there is a clear goal and a clear benefit — and when your attorney has enough understanding of the government's case and your exposure to know the conversation will help rather than harm. (See our pages on substantial assistance and cooperation and the federal target letter.)

The "Reverse Proffer"

Not every meeting with the government is about you giving information. In a reverse proffer, the government presents its evidence to you and your attorney — showing the strength of its case, sometimes identifying cooperating witnesses, and walking through the counts it's considering. The implicit question at the end is whether you'll resolve the case or proceed toward indictment. Preparing for a reverse proffer is the opposite task from preparing for a proffer: instead of constructing what you can safely offer, your attorney must evaluate and probe the government's case. Knowing which kind of meeting you're walking into — before you enter the room — is essential.

The Bottom Line

A proffer is a high-stakes, sometimes irreversible step. Done well, with a clear objective and careful preparation, it can change the trajectory of a case. Done impulsively, it can hand the government leads, impeachment material, or new charges. This is not a meeting to walk into unprepared or without experienced federal counsel who has thought through exactly what you stand to gain and lose.

Key Terms

• Proffer / "queen for a day": A meeting where you give the government information under a limited-use agreement.
• Proffer agreement: The written contract defining how your statements can be used.
• Derivative use: The government's use of leads developed from your statements.
• Reverse proffer: A meeting where the government shows you its evidence.
• FRE 410: The evidence rule governing statements made during plea discussions.