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What Is a Rule 35 Motion in Federal Court?
Rule 35 is the closest thing federal criminal procedure offers to a second chance at sentencing, and it is not yours to request. The motion belongs to the government. The decision to file belongs to the government. The determination of whether your cooperation qualifies as “substantial” belongs, with a finality that most defendants do not fully appreciate until they are waiting for a phone call that may never come, to the government. One does not petition for this relief. One earns it, in the government’s estimation, or one does not.
This provision of the Federal Rules of Criminal Procedure addresses two distinct circumstances under a single rule number, and the confusion between them accounts for a significant portion of the inquiries we receive after sentencing.
The Two Provisions
Rule 35(a) permits the court to correct a sentence that resulted from arithmetical, technical, or other clear error within fourteen days of the oral announcement of the sentence. Rule 35(b) permits the court, on the government’s motion, to reduce a sentence when the defendant has provided substantial assistance in investigating or prosecuting another person. The first is a clerical instrument. The second is the mechanism through which federal cooperation is credited after sentencing has already occurred.
Most of what follows concerns Rule 35(b), because most of the misunderstanding does as well.
The Fourteen-Day Window
The deadline under Rule 35(a) is fourteen calendar days from the moment the judge speaks the sentence. Not from the written judgment. Not from the date the defendant receives notice in the mail. From the oral announcement.
Clear error means something the court can recognize as wrong without argument: a criminal history point in the wrong category, a guidelines range based on an incorrect offense level, a math mistake. It does not cover a disagreement with how the court weighed the factors. It does not mean the sentence was too harsh. Those contentions belong to an appeal.
We have seen these motions succeed perhaps five or six times in recent years. In each instance the error was the kind of thing that should have been caught at the bench. The defense attorney identified a miscalculation, filed within the window, and the court corrected the number. The correction, when it comes, amounts to a clerical adjustment, which is precisely what Rule 35(a) was designed to be.
Substantial Assistance and the Government’s Discretion
Rule 35(b) operates on a different principle. Under this provision, the court may reduce a sentence if the defendant, after sentencing, provided substantial assistance in investigating or prosecuting another person. The motion must originate with the government. The defendant cannot file it. The defense attorney cannot file it. The United States Attorney’s Office alone determines whether the cooperation warrants the motion, and the court alone determines the extent of the reduction.
The word “substantial” is not defined in the rule. In practice, the government treats assistance as substantial when it materially advances an investigation or prosecution. Testimony at trial against a co-defendant is the clearest case. Providing information that leads to an indictment ranks close behind. Wearing a wire, identifying members of an organization the government had not yet reached, participating in controlled operations that result in charges against individuals the government could not otherwise have prosecuted: these qualify, depending on their yield.
What does not qualify is intention without result. A defendant who offers information the government already possesses has confirmed a file, not advanced an investigation. A defendant who provides leads that produce no charges has cooperated in the colloquial sense but not the statutory one. The assistance must produce something the government values, and the government is the sole arbiter of that value.
Courts have held, with a consistency that approaches resignation, that the government possesses near-total discretion over whether to file a substantial assistance motion. The recognized exceptions are narrow: the refusal was motivated by an unconstitutional factor such as race or religion, or the government’s plea agreement specifically obligated it to file and the government breached that obligation. Outside those circumstances, the decision is unreviewable. Whether this arrangement is equitable or merely functional is a question the case law does not engage with directly.
The motion must ordinarily be filed within one year of sentencing. Exceptions apply when the defendant’s information was not known until after the one-year period, or was provided within the year but did not become useful to the government until later, or when the information’s usefulness could not reasonably have been anticipated until more than a year had passed. The First Circuit in United States v. Morales and the Eleventh Circuit in United States v. Orozco reached opposite conclusions on whether late-emerging cooperation qualified under the prior version of the rule; the amendment resolved the split, largely in the defendant’s direction, though “in the defendant’s direction” should not be confused with “in the defendant’s favor.”
One feature of Rule 35(b) merits particular emphasis because it is the feature most often overlooked. Under this provision, the court possesses the authority to reduce a sentence below the statutory mandatory minimum. For defendants convicted of drug trafficking or firearms offenses carrying mandatory minimums of ten or fifteen or twenty years, this is not a technical distinction. It is the difference between a sentence that can be reduced and one that can only be trimmed to a floor the defendant will reach regardless.
The government holds all of the procedural advantage in a Rule 35(b) motion. The defendant holds whatever information the government has not yet obtained. These are not equivalent positions.
The Sentencing Commission’s study of Rule 35(b) confirmed what practitioners already suspected: defendants who receive reductions under this provision carry longer average sentences than those who received 5K1.1 departures at the time of sentencing. The Commission found that the majority of Rule 35(b) recipients had been convicted of drug trafficking offenses carrying mandatory minimum penalties. Reductions were generally smaller, whether measured by the extent of the reduction or by the final sentence imposed. Defendants who received both a 5K1.1 departure and a subsequent Rule 35(b) reduction fared best, though that combination requires sustained cooperation across two distinct phases of a case, and it is, if we are being precise, exhausting for the defendant and the defendant’s family in ways the sentencing data does not capture.
There is a practical reason for the disparity, and it is not complicated. Prosecutors are more receptive at the front end of a case, when the defendant’s cooperation is fresh and the relationship between effort and reward is immediate. A Rule 35(b) motion filed two years after sentencing arrives in a different climate. The case agents may have rotated to other matters. The prosecutor filing the motion may not be the prosecutor who handled the underlying case. We have seen this produce outcomes that had less to do with the quality of the defendant’s cooperation than with the institutional memory of the office handling the motion.
Six months after sentencing is when most Rule 35 cooperation begins in earnest, at least in the cases we have handled. The defendant has had time to acclimate to the sentence. The case agent has determined whether the information connects to something active. The framing we recommend is direct: the cooperation must be useful to the government, not cathartic for the defendant. The distinction matters.
We approach the cooperation agreement differently than the standard practice suggests. Most firms counsel defendants to cooperate and then wait for the government to act. We begin the Rule 35(b) conversation before sentencing, during the plea negotiation, because the language of the cooperation agreement determines whether the government is merely permitted to file the motion or effectively required to do so. A cooperation agreement stating the government “may” file a Rule 35(b) motion is permission the government can decline to exercise. An agreement that specifies benchmarks for substantial assistance, with the government committing to file upon satisfaction of those benchmarks, is a different document. That clause often determines whether the cooperation produces a result.
Timing and Procedural Requirements
In 2002, before the current version of Rule 35(b) assumed its present shape, the question of how to credit assistance that straddled the sentencing date was not resolved. A defendant who provided information before sentencing and more after could, in theory, benefit from both Section 5K1.1 and Rule 35(b). In practice, the assistance on either side of the line might not meet the “substantial” threshold of either provision standing alone. The amendment to Rule 35(b)(3) addressed this by allowing courts to consider presentence assistance when evaluating post-sentencing cooperation. The gap is smaller than it was.
The difference between the two mechanisms is timing. Section 5K1.1 operates at sentencing. Rule 35(b) operates after. A defendant who cooperates before sentencing and receives a 5K1.1 departure has the reduction built into the original sentence as announced. A defendant whose cooperation does not bear fruit until later receives an initial sentence reflecting no cooperation at all, and then waits for a motion that may or may not be filed.
The Commission’s data indicated that Rule 35(b) reductions were concentrated in certain circuits: nearly half in the Fourth and Eleventh, with the combined D.C., First, and Second Circuits accounting for a very small percentage of all reductions granted. Whether this reflects prosecutorial culture, case composition, or something less explicable is unclear. I am less certain about the cause than the preceding sentences might suggest.
The Second Call
The first call a family member places to our office after a federal sentencing usually concerns an appeal. The second, if it arrives at all, concerns Rule 35. By the time that call comes, the defendant has been designated to a facility. The family has begun to adjust to the sentence as announced. The question is always whether anything can still be done.
We do not provide false encouragement on this point. The proportion of federal defendants who receive a Rule 35(b) reduction is small. The path requires cooperation that most defendants either cannot provide or prefer not to, for reasons that range from personal safety to principle. For those who do possess relevant information, the question is not whether to cooperate but whether the cooperation agreement was structured to protect the defendant’s interest after the information has been delivered.
A consultation addresses whether a Rule 35 motion is realistic given the defendant’s circumstances, what cooperation would involve, and what range of reduction the court might consider if the government files. That conversation costs nothing and assumes nothing. It is the beginning of an assessment, not a guarantee of its conclusion.