Part of our complete guide to Rule 35(b) sentence reductions in federal court.
For many defendants and families, the most difficult Rule 35 question is not whether assistance was provided. The most difficult question is what happens when the defendant believes substantial assistance was provided, but the government does not file a Rule 35(b) motion.
This situation arises more often than many people realize.
A defendant may spend hours meeting with investigators. The defendant may provide information, participate in debriefings, testify before a grand jury, or even testify at trial. Months pass. Sometimes years pass. Yet no Rule 35 motion appears.
Families naturally begin asking:
“Can the government do that?”
“Doesn’t the defendant get credit for helping?”
“Can the judge step in?”
The answers are often frustrating because Rule 35(b) gives the government substantial discretion in deciding whether to seek a sentence reduction.
The General Rule
As a general matter, the government decides whether to file a Rule 35(b) motion.
The rule itself places the decision in the hands of the prosecution.
As a result, courts typically do not second-guess the government’s assessment of the value of a defendant’s assistance.
This principle reflects the practical reality that prosecutors and investigators are usually in the best position to evaluate:
- The usefulness of the information;
- The credibility of the witness;
- The significance of the assistance;
- The impact of the cooperation on ongoing investigations.
Because of this, courts generally allow prosecutors broad discretion when making Rule 35 decisions.
Cooperation Does Not Automatically Require a Motion
One of the most common misconceptions is that cooperation automatically entitles a defendant to a Rule 35 motion.
That is not how the system operates.
A defendant may:
- Cooperate fully;
- Provide truthful information;
- Participate in multiple interviews;
- Make sincere efforts to help.
Yet the government may conclude that the assistance did not rise to the level of substantial assistance.
Likewise, prosecutors may determine that information provided by a defendant simply did not advance an investigation in a meaningful way.
Whether that assessment is fair is sometimes a matter of disagreement, but the existence of cooperation alone does not create an automatic right to a Rule 35 motion.
Why the Government Might Decline to File
There are many reasons why prosecutors may choose not to file a Rule 35 motion.
For example:
The Information Was Already Known
Investigators may already possess the information supplied by the defendant.
In that situation, the defendant may have been truthful and cooperative, but the information may provide little additional value.
The Information Could Not Be Verified
Sometimes defendants provide information that cannot be corroborated.
Investigators may be unable to confirm its accuracy or usefulness.
The Information Did Not Produce Results
Not every lead results in arrests, indictments, convictions, or recoveries of assets.
Prosecutors may conclude that the assistance did not materially advance law-enforcement objectives.
The Investigation Is Still Ongoing
In some situations, the government has not refused to file a motion at all.
Instead, prosecutors may simply be waiting.
The investigation may still be active.
Witnesses may not have testified yet.
Other targets may not have been charged.
Families often interpret silence as a rejection when the government has not yet made a final decision.
Not Every Broken Expectation Is a Broken Promise
Another source of confusion involves conversations that occur during cooperation.
Defendants sometimes hear statements such as:
“We’ll let the judge know.”
“We’ll evaluate your assistance.”
“We’ll see where this goes.”
“We’ll consider a Rule 35 motion.”
Those statements are often interpreted as promises.
In many cases, however, they are merely acknowledgments that the government will evaluate the cooperation.
This distinction becomes important because disappointment alone does not necessarily establish that the government acted improperly.
Plea Agreements Often Reserve Government Discretion
Many cooperation-related plea agreements contain language stating that the government will determine whether the defendant’s assistance qualifies as substantial assistance.
These provisions frequently reserve broad discretion to the prosecution.
As a result, defendants are often surprised to learn that even a cooperation agreement may not guarantee the filing of a Rule 35 motion.
The precise language of the plea agreement can be critically important.
When Defendants Believe the Government Got It Wrong
Some disputes arise because the defendant believes the government undervalued the assistance provided.
The defendant may sincerely believe:
- The information was important;
- The testimony was critical;
- The investigation succeeded because of the defendant’s efforts.
The government may view the situation differently.
Unfortunately, courts generally do not revisit those ordinary disagreements.
A judge does not typically conduct a hearing simply to determine whether prosecutors gave enough weight to a defendant’s cooperation.
Families Should Be Cautious About Rumors
Federal prisons generate a great deal of informal legal advice.
Some of it is accurate.
Much of it is not.
Families often hear statements such as:
“If he testified, they have to file.”
“If he cooperated, the judge can force them.”
“If the prosecutor refuses, just file your own motion.”
Those statements are usually incorrect.
Rule 35 litigation is highly technical, and the governing legal standards are far more limited than many prison rumors suggest.
For that reason, families should be cautious about relying solely on information obtained through informal channels.
Silence Does Not Always Mean Refusal
One of the most important practical points is this:
The absence of a Rule 35 motion does not necessarily mean the government has decided never to file one.
Investigations often move slowly.
Some cooperation efforts take years to bear fruit.
Prosecutors sometimes delay filing until they can fully assess the value of the assistance.
Accordingly, families should avoid assuming that a motion will never be filed simply because substantial time has passed. Rule 35(b)(2) exists precisely because some assistance cannot be evaluated within the first year.
The timing, scope, and status of the underlying investigation often matter greatly.
The Key Takeaway
As a general rule, the government has broad discretion to decide whether to file a Rule 35(b) motion.
A defendant’s cooperation, standing alone, does not automatically create a right to a sentence reduction. Prosecutors evaluate the usefulness and significance of the assistance and determine whether a motion is appropriate.
That does not mean the government’s decision is completely immune from judicial review. In limited circumstances, courts may examine a refusal to file a Rule 35 motion.
Those circumstances are narrow, but they are important. We discuss them in the next section, which addresses one of the most frequently misunderstood questions in federal criminal practice: can a judge force the government to file a Rule 35 motion?
