The Federal Rule 33 Motion for a New Trial

What a Rule 33 Motion for a New Trial Is

A Rule 33 motion for a new trial is a post-verdict request that asks a federal district judge to set aside a conviction and order the case tried again. Its authority is a single sentence in Federal Rule of Criminal Procedure 33: the court "may vacate any judgment and grant a new trial if the interest of justice so requires."

The motion is not an appeal, and it is not a request for acquittal. It is filed in the same trial court, and it is decided by the same judge who presided over the trial. That judge already watched the witnesses testify and observed how the jury reacted, which is why the rule commits the decision so heavily to the trial court's discretion.

Rule 33 opens two doors. The first is newly discovered evidence — proof that surfaced only after the verdict. The second is a catch-all for any reason other than newly discovered evidence, which covers serious trial error and the argument that the verdict runs against the weight of the evidence. The Fifth Circuit, which governs federal prosecutions in the Northern and Eastern Districts of Texas, treats these motions as disfavored and reviews them with great caution. See United States v. Turner, 674 F.3d 420 (5th Cir. 2012).

The Two Tracks and Their Deadlines

The single most important practical fact about Rule 33 is that the two grounds carry very different deadlines. Missing them is usually fatal, because the time limits are strict claim-processing rules.

Under Rule 33(b)(1), a motion grounded on newly discovered evidence must be filed within three years after the verdict or a finding of guilty. Under Rule 33(b)(2), a motion grounded on any other reason — trial error, an evidentiary ruling, prosecutorial overreach, or the weight of the evidence — must be filed within just fourteen days after the verdict.

Two wrinkles matter. If an appeal is already pending, the district court can entertain a timely three-year motion but ordinarily needs a remand to grant it. And the fourteen-day window is measured from the verdict, not from sentencing, so a defendant who waits for the sentencing hearing to raise a trial-error argument has almost always already lost the Rule 33 vehicle for that claim. A court may extend the deadline only on the narrow terms allowed by Rule 45(b).

The Fifth Circuit Berry Test for Newly Discovered Evidence

When the ground is newly discovered evidence, the Fifth Circuit applies the so-called Berry rule, a five-part test that a defendant must satisfy completely. As the court explained in United States v. Wall, 389 F.3d 457 (5th Cir. 2004), the movant must prove every one of the following:

The factors are conjunctive. As Wall put it, if the defendant fails to demonstrate any one of them, the motion must be denied. That makes the third and fifth factors the usual battlegrounds. Evidence that merely discredits or impeaches a government witness normally will not justify a new trial, and a movant who learns of potential evidence during trial is expected to seek a continuance rather than sit on the point and raise it afterward.

The Berry test also does not soften with speed. The court held in Wall that whether the motion is filed within fourteen days or within the full three years, the same five-factor standard governs a newly-discovered-evidence claim. A motion must also rest on admissible proof; a court cannot grant relief on the strength of inadmissible hearsay about what an absent witness might say.

The Rare Weight-of-the-Evidence Ground

The catch-all track contains a rarely granted but powerful ground: the argument that the verdict is against the great weight of the evidence. Here the trial judge is sometimes described as sitting like a thirteenth juror. Unlike a motion for judgment of acquittal, which forces the court to view the evidence in the light most favorable to the government, a weight-of-the-evidence motion lets the judge independently weigh the proof.

The Fifth Circuit confirmed the scope of that power in United States v. Tarango, 396 F.3d 666 (5th Cir. 2005). In ruling on the motion, the district court may weigh the evidence and may assess the credibility of the witnesses. But the same case marks the boundary: the judge must not entirely usurp the jury's function, and may not set aside a verdict simply because the court would have reached a different result.

Relief on this ground is reserved for exceptional circumstances. As Tarango described it, a new trial in the interest of justice may be appropriate where the evidence, although it tangentially supports the verdict, preponderates so heavily against it that a miscarriage of justice may have occurred. Because that standard invites the trial court to look behind a jury's finding, appellate courts expect it to be used infrequently, and they scrutinize a grant more closely than a denial.

The Brady Overlap

Many of the strongest new-trial motions are really disclosure cases in disguise. When the newly discovered evidence turns out to be favorable material that the government had all along and failed to hand over, the motion is governed by the constitutional rule of Brady v. Maryland and its progeny rather than by the ordinary Berry calculus.

The Supreme Court drew that line in United States v. Agurs, 427 U.S. 97 (1976). The Court reasoned that evidence sitting in the prosecutor's file is in a different category than evidence found from a neutral source after trial, so a defendant should not have to shoulder the severe burden of proving the evidence would probably have produced an acquittal. Instead, constitutional error occurs if the omitted evidence creates a reasonable doubt about guilt that did not otherwise exist, judged against the entire record.

That distinction has real consequences. A Brady-based Rule 33 motion can succeed on a materiality showing that is easier to meet than the fifth Berry factor. It also changes the standard of review: the Fifth Circuit reviews the denial of an ordinary new-trial motion for abuse of discretion but reviews alleged Brady violations de novo. See Turner, 674 F.3d 420. Suppressed impeachment material — for example, an undisclosed deal with a cooperating witness — falls within the same framework under the Giglio line of cases.

How the Motion Is Filed and Heard

A Rule 33 motion is filed in writing in the district court that entered the conviction, and it is supported by the specific proof the defense wants the judge to consider — typically affidavits or sworn declarations describing the new evidence and how it came to light. Because the motion can turn on facts outside the trial record, the supporting materials matter as much as the legal argument.

The evidence offered must be admissible. In Wall, the Fifth Circuit held that a district court errs when it grants a new trial based on inadmissible hearsay about what a witness might say, so the defense should be prepared to present testimony or admissible documentary proof rather than second-hand summaries. The burden of persuasion rests entirely on the movant.

The trial judge may hold an evidentiary hearing to resolve disputed facts, but a hearing is not automatic; the court can deny a motion on the papers when the submissions fail as a matter of law. The government files a response, and the judge who presided over the trial — the person best positioned to gauge the impact of any new proof — decides. A defendant who is also pursuing a judgment of acquittal will often file the two motions together, since Rule 29 and Rule 33 address different questions.

The Remedy: A New Trial, Not an Acquittal

It is essential to understand what a granted Rule 33 motion actually delivers. The remedy is a new trial, not a dismissal and not an acquittal. If the court grants the motion, it vacates the judgment and returns the case to the docket for retrial.

That distinction drives strategy. A judgment of acquittal under Rule 29 ends the prosecution and bars any retrial under the Double Jeopardy Clause. A new trial does the opposite: because the defendant sought to undo the verdict, the Double Jeopardy Clause does not bar the government from trying the case a second time. The prosecution may retry the defendant, may appeal the order granting the new trial, or may decide to dismiss.

For that reason, defense counsel usually pairs a Rule 33 request with a Rule 29 motion for judgment of acquittal whenever the record allows. The acquittal motion is the stronger outcome because it is final; the new-trial motion is the fallback that keeps the case alive for a fairer second proceeding when the evidence is legally sufficient but the first trial was flawed. Which motion fits depends on whether the problem is the sufficiency of the evidence or the fairness of the process.

Standard of Review on Appeal

On appeal, a district court's ruling on a Rule 33 motion is reviewed for abuse of discretion. Both Wall and Turner confirm that deferential standard, and the reason is practical: the appellate court has only read a cold record, while the trial judge saw the witnesses and watched their effect on the jury.

The deference is not unlimited. Questions of law are reviewed de novo, and a court abuses its discretion when it rests its decision on an erroneous view of the law or a clearly erroneous assessment of the evidence. On mixed questions, the Fifth Circuit reviews the underlying facts for abuse of discretion but reviews the legal conclusions drawn from those facts de novo. And as noted above, an embedded Brady claim is reviewed de novo rather than for abuse of discretion.

The posture also matters. Because a grant of a new trial pulls against the deference normally owed to the jury's verdict, appellate courts examine an order granting relief more searchingly than an order denying it. In practice, that means a defendant who wins a new trial in the district court must still be ready to defend the trial judge's reasoning — particularly the fifth Berry factor or the weight-of-the-evidence finding — on the government's appeal.

Where Rule 33 Fits in Federal Practice

Rule 33 is one piece of a larger set of post-verdict tools, and choosing among them is a timing and strategy problem. A Rule 29 motion for judgment of acquittal attacks the legal sufficiency of the evidence and, if granted, ends the case. A direct appeal to the Fifth Circuit challenges legal errors on the trial record. A later motion under 28 U.S.C. section 2255 raises constitutional claims, such as ineffective assistance of counsel, that usually require facts outside the record.

Rule 33 sits between them. It is the vehicle for problems that the trial record alone cannot show — evidence discovered after the verdict, a suppression violation that only came to light later, or juror misconduct and improper outside influence on the jury. The four recurring sub-topics are the Berry newly-discovered-evidence test, Brady-based motions, the three-year filing window, and the broad interest-of-justice and trial-error grounds.

Because the fourteen-day clock for trial-error grounds is so short, and because the Berry and Brady standards are demanding, these motions reward early, careful work. The criminal defense attorneys at L and L Law Group, PLLC handle federal matters in the Northern and Eastern Districts of Texas and before the Fifth Circuit, and this overview is general legal information, not legal advice about any specific case.

Common Situations & Variations

This motion comes up in several recurring situations. Each guide below walks through a specific fact pattern, the governing standard, and how Federal courts have handled it.

What the Case Law Says

These decisions—verified against primary sources—control how this motion is litigated. Every case still turns on its own facts.

• United States v. Wall, 389 F.3d 457 (5th Cir. 2004) — To win a Rule 33 new trial on newly discovered evidence, a defendant must satisfy all five Berry factors; failing any one defeats the motion.
• United States v. Agurs, 427 U.S. 97 (1976) — Suppressed exculpatory evidence in the government's possession relaxes the usual newly-discovered-evidence burden; constitutional error exists if the omission creates reasonable doubt about guilt.
• United States v. Turner, 674 F.3d 420 (5th Cir. 2012) — Rule 33 lets a court grant a new trial when the interest of justice requires; such motions are disfavored and reviewed for abuse of discretion.
• United States v. Tarango, 396 F.3d 666 (5th Cir. 2005) — On a Rule 33 motion, the district court may weigh the evidence and assess witness credibility, but must not usurp the jury's function.

General summaries of published opinions for information only — not predictions about any specific case.