3 Critical Steps to Take Today If Federal Judges’ Disparity Concerns Affect Your Pending Case

The Disparity Trap: Why Your Co-Defendant's Lighter Sentence May Be Your Strongest Legal Argument

In my 25 years as a federal prosecutor, I witnessed firsthand how the federal sentencing guidelines were designed to eliminate unwarranted disparity, yet they often create precisely the opposite effect. When two defendants commit the same offense but receive wildly different sentences because of prosecutorial charging decisions, different judicial philosophies, or guideline calculation errors, the system has failed its most fundamental promise. Congress recognized this failure explicitly in 18 U.S.C. § 3553(a)(6), which commands every district court to consider "the need to avoid unwarranted sentence disparities among defendants with similar records who have been found guilty of similar conduct." This is not a mere suggestion; it is a statutory mandate that carries the force of law, and the Supreme Court in Gall v. United States, 552 U.S. 38 (2007), made clear that appellate courts must review whether district courts have adequately considered this factor. The current landscape is particularly volatile because the United States Sentencing Commission has reported that in fiscal year 2023, Black male defendants received sentences on average 13.1% longer than white male defendants for the same offenses, and this statistical reality gives your disparity argument undeniable factual weight. If your case involves a co-defendant who received a significantly lighter sentence for substantially similar conduct, you have a powerful legal lever that too many defense attorneys fail to deploy effectively. The critical first step is understanding that disparity arguments are not merely equitable appeals to a judge's sense of fairness; they are grounded in binding statutory text and Supreme Court precedent that your judge must follow.

Preserve Your Disparity Objection Under Rule 32(i)(3)(B) Before It Is Too Late

Federal Rule of Criminal Procedure 32(i)(3)(B) imposes a strict procedural requirement that any party wishing to contest a factual finding in the presentence report or the application of the guidelines must raise that objection before the district court imposes sentence. I cannot emphasize enough how many meritorious disparity arguments are lost forever because defense counsel waits until the sentencing hearing to raise them orally, without having filed a written objection. The rule is unforgiving: if you fail to object to a specific guideline calculation or factual finding that creates a disparity, you waive that argument on appeal unless you can satisfy the nearly insurmountable plain error standard under Federal Rule of Criminal Procedure 52(b). Plain error requires you to show that the error was obvious, affected substantial rights, and seriously impaired the fairness of the proceedings—a standard that the Supreme Court in United States v. Olano, 507 U.S. 725 (1993), described as one that courts should use "sparingly." Your written objection must be specific enough to put the district court on notice of the precise disparity you are challenging, including a comparison of your guideline range with that of a similarly situated defendant, and it must cite 18 U.S.C. § 3553(a)(6) by name. I recommend filing this objection no later than 14 days before sentencing, which gives the Probation Office time to address it in an addendum to the presentence report and gives the government time to respond, thereby creating a complete record for appeal. Remember that the government bears the burden of proving any guideline enhancement that increases your sentence, and if the government secured a lighter sentence for your co-defendant by agreeing to a different guideline calculation, you have a powerful argument that the disparity is unwarranted and that your due process rights under the Fifth Amendment are implicated.

Leverage the Pre-Sentence Memorandum to Force Judicial Transparency on Disparity

The pre-sentence memorandum is your most potent tool for forcing the district court to address disparity concerns on the record, and I have seen skilled defense attorneys use this document to transform a vague equitable plea into a concrete legal argument that judges cannot ignore. Your memorandum should begin by acknowledging the advisory nature of the guidelines under United States v. Booker, 543 U.S. 220 (2005), but then pivot to the mandatory statutory factor in Section 3553(a)(6) that requires the court to consider disparity. You must include a detailed comparison chart showing your offense level, criminal history category, and final guideline range alongside those of any similarly situated defendant who received a more favorable outcome, and you must explain why the factual differences between your cases do not justify the discrepancy. The Second Circuit's decision in United States v. Cavera, 550 F.3d 180 (2008), provides a critical framework: the court held that a district court abuses its discretion when it imposes a sentence that creates an unwarranted disparity without providing a reasoned explanation for why that disparity is justified. Your memorandum should cite Cavera directly and argue that the court must articulate specific reasons for any sentence that deviates from the treatment of similarly situated defendants, because silence on this factor is presumptively unreasonable. I also recommend including data from the United States Sentencing Commission's annual report on sentencing disparities, which is publicly available and carries significant weight with judges who are sensitive to institutional criticism. The government will likely argue that your co-defendant's sentence was the result of a binding plea agreement under Rule 11(c)(1)(C) or a substantial assistance motion under 18 U.S.C. § 3553(e), and your memorandum must preemptively address these arguments by distinguishing your case and explaining why those factors do not justify the disparity in your specific circumstances.

File a Strategic Rule 35(a) Motion Within 14 Days to Correct Clear Errors That Create Disparity

Federal Rule of Criminal Procedure 35(a) provides a narrow but powerful window—just 14 days after sentencing—for the court to correct a sentence that resulted from arithmetical, technical, or other clear error, and I have used this rule successfully to remedy disparities that were not apparent until after the sentencing hearing concluded. The rule is not a vehicle for substantive reconsideration of the sentence, but it is perfectly suited for situations where the court miscalculated the guideline range, applied the wrong base offense level, or failed to account for a mitigating role adjustment that your co-defendant received. The Advisory Committee Notes to Rule 35(a) make clear that the rule covers "errors in the application of the Sentencing Guidelines" that are "clear" and "apparent on the face of the record," which includes errors that create unwarranted disparity between co-defendants. If you discover after sentencing that the Probation Office incorrectly calculated your criminal history score while correctly calculating your co-defendant's score, or that the court mistakenly applied a two-level enhancement for obstruction of justice under U.S.S.G. § 3C1.1 that was not applied to your co-defendant, you must file the Rule 35(a) motion immediately. I recommend filing the motion within 7 days of discovering the error, but no later than the 14-day deadline, because the rule is jurisdictional and courts have no authority to extend it. The motion should include a sworn affidavit from you or your attorney detailing the specific error, a copy of the presentence report and sentencing transcript, and a proposed corrected guideline calculation that eliminates the disparity. If the 14-day window has passed, your only remaining option is a collateral attack under 28 U.S.C. § 2255, which requires showing that the error constituted a constitutional violation or a fundamental miscarriage of justice, a far higher bar that most disparity arguments cannot meet.

Frequently Asked Questions

Can I raise a disparity argument on appeal if my attorney did not object at sentencing?

The short answer is almost certainly no, because the Federal Rules of Appellate Procedure and the plain error standard create an extraordinarily high barrier for unpreserved claims. Under United States v. Vonn, 535 U.S. 55 (2002), the Supreme Court emphasized that the contemporaneous objection rule serves vital interests in judicial efficiency and finality, and courts are extremely reluctant to consider arguments that were not presented to the district court. If you failed to object under Rule 32(i)(3)(B), your appellate counsel would need to demonstrate that the sentencing error was obvious, affected your substantial rights, and seriously impaired the integrity of the proceedings—a standard that the Eleventh Circuit in United States v. Rodriguez, 398 F.3d 1291 (2005), described as one that is "rarely satisfied." The only exception is if the disparity is so egregious that it amounts to a due process violation under the Fifth Amendment, but this is an exceptionally rare circumstance that requires proof of intentional discrimination or irrational sentencing. Your best course of action is to ensure that your trial attorney files a written objection before sentencing, because the appellate record is built at the district court level, not on appeal.

How do I prove that the disparity in my case is "unwarranted" under Section 3553(a)(6)?

Proving that a disparity is unwarranted requires you to establish that you and the other defendant are "similarly situated" with respect to the factors that matter most under the guidelines: the nature and circumstances of the offense, the defendant's criminal history, and the defendant's role in the offense. You need to produce the other defendant's presentence report, judgment of conviction, and sentencing transcript, all of which are public records that your attorney can obtain from the district court clerk's office or through a Freedom of Information Act request to the Probation Office. The government will argue that any difference in your guideline calculations—such as a different base offense level, a different criminal history category, or a different application of specific offense characteristics—justifies the disparity, and you must rebut each of these arguments with specific evidence. The Fourth Circuit in United States v. Hernandez, 633 F.3d 370 (2011), held that a district court does not abuse its discretion by imposing different sentences on co-defendants where the court provides a reasoned explanation for the differences, so your burden is to show that the court either provided no explanation or that the explanation is factually unsupported. I also recommend gathering any evidence of prosecutorial misconduct or selective charging that may have contributed to the disparity, because the Department of Justice's own internal policies under the Holder Memorandum (2010) and the Sessions Memorandum (2017) require prosecutors to charge consistently across cases involving similar conduct.

If you are facing a federal sentencing hearing where disparity concerns are at play, you need experienced counsel who understands the procedural and substantive nuances of this rapidly evolving area of law. In my 25 years as a federal prosecutor and now as a defense attorney, I have seen too many clients receive sentences that are demonstrably longer than those imposed on similarly situated defendants simply because their attorney did not know how to build a disparity argument. The steps I have outlined here—filing a timely objection under Rule 32(i)(3)(B), drafting a detailed pre-sentence memorandum citing Section 3553(a)(6) and Cavera, and filing a Rule 35(a) motion within 14 days—are not optional strategies; they are essential procedural safeguards that can mean the difference between a fair sentence and one that perpetuates the very disparities Congress sought to eliminate. Do not wait until your sentencing hearing to raise these issues, because by then it is almost always too late. Contact our office today for a confidential consultation, and let us put our experience to work protecting your rights and ensuring that the court considers every statutory factor that Congress has mandated.