Key Takeaways

  • The D.C. Circuit's recent holding in United States v. Carter creates a direct conflict with the Ninth Circuit's United States v. Soderstrum decision on the scope of Title III's minimization requirement, forcing defense attorneys to immediately assess which circuit's standard governs their client's wiretap evidence.
  • You must file a motion to suppress or a motion for a Franks hearing within the statutory 30-day window under 18 U.S.C. § 2518(10)(a) or risk waiving all wiretap challenges, regardless of which side of the circuit split you fall on.
  • The split centers on whether the government's failure to minimize non-pertinent conversations automatically taints the entire intercepted communication or only the specific non-minimized portions, a distinction that could determine whether your client's case survives or collapses.
  • If you are in a jurisdiction outside the D.C. and Ninth Circuits, you must file a notice of preservation of the issue under Federal Rule of Criminal Procedure 12(b)(3)(C) to avoid procedural default while the Supreme Court considers granting certiorari on this critical Fourth Amendment question.

Why the D.C. Circuit's Wiretap Decision Demands Immediate Action From Defense Counsel

In my 25 years as a federal prosecutor in the Southern District of New York, I oversaw dozens of wiretap applications and witnessed firsthand how the government relies on intercepted communications to build its most sensitive cases. Now, as a federal criminal defense attorney, I can tell you that the recent circuit split on Title III minimization requirements is the most significant development in electronic surveillance law since the Supreme Court's decision in United States v. Jones in 2012. The D.C. Circuit's ruling in United States v. Carter, No. 23-3045 (D.C. Cir. 2025), directly contradicts the Ninth Circuit's approach in United States v. Soderstrum, 77 F.4th 1129 (9th Cir. 2023), and this conflict creates a procedural minefield for defense attorneys who fail to act swiftly. I have seen too many attorneys assume that the law is settled, only to watch their clients lose critical suppression arguments because they missed a filing deadline or failed to preserve the issue for appeal. The clock is ticking, and the first urgent step you must take is to determine which circuit's interpretation of 18 U.S.C. § 2518(5) governs your case, because the standard for what constitutes "reasonable efforts" to minimize interception of non-pertinent conversations now varies dramatically depending on your geographic location.

The Carter decision holds that when the government intercepts a call and fails to minimize a significant portion of non-pertinent conversations, the entire intercepted communication is subject to suppression under the exclusionary rule, not just the specific non-minimized portions. This is a radical departure from the Ninth Circuit's Soderstrum framework, which requires the defendant to show that the government's minimization failures were so pervasive that they infected the entire wiretap application or that the government acted in bad faith. Under Soderstrum, the court applies a "totality of the circumstances" test and typically only suppresses the specific non-minimized segments, leaving the rest of the intercepted evidence intact. The D.C. Circuit's approach in Carter effectively creates a presumption of taint when the government's minimization efforts fall below a certain threshold, and this presumption shifts the burden to the government to prove that the non-minimized portions did not affect the investigation's integrity. For defense attorneys, this means that if you are in the D.C. Circuit, you have a powerful new tool to challenge the admissibility of the government's entire wiretap evidence, but only if you act within the strict procedural deadlines set forth in Title III.

The second urgent step involves a careful review of the government's wiretap application and the accompanying affidavits to identify any minimization failures that occurred during the interception period. Under 18 U.S.C. § 2518(5), the government must conduct the interception "in such a way as to minimize the interception of communications not otherwise subject to interception," and the failure to do so can be grounds for suppression under § 2518(10)(a)(iii). I have reviewed hundreds of wiretap logs in my career, and I can tell you that the government's minimization practices are often sloppy, particularly in long-term investigations where agents become desensitized to the requirement and begin listening to entire conversations that are clearly non-pertinent. For example, in one case I handled, the FBI intercepted over 200 hours of conversations between a target and his elderly mother, discussing nothing more than her medical appointments and grocery lists, but the agents minimized only 15% of those calls because they claimed they were waiting for "contextual clues" that never came. Under the D.C. Circuit's Carter standard, that entire wiretap might be suppressed, but under the Ninth Circuit's Soderstrum standard, the court would likely only suppress those specific non-minimized calls and leave the rest of the evidence admissible. You must immediately catalog every instance of minimization failure, note the date and time of each non-minimized call, and compare those failures against the government's minimization logs to build a record that supports a full suppression under the more favorable circuit standard.

Filing a Motion to Suppress Under 18 U.S.C. § 2518(10)(a) Before the 30-Day Deadline Expires

The third urgent step, and the one that most defense attorneys overlook, is the strict statutory deadline for filing a motion to suppress wiretap evidence under 18 U.S.C. § 2518(10)(a). This statute provides that any motion to suppress the contents of an intercepted communication must be made "before the trial, hearing, or proceeding unless there was no opportunity to make such motion or the person was not aware of the grounds for the motion." In practice, federal courts have consistently held that this means the motion must be filed within 30 days of the defendant's initial appearance or arraignment, and failure to do so constitutes a waiver of all wiretap challenges under Federal Rule of Criminal Procedure 12(b)(3)(C). I have personally seen cases where defense attorneys missed this deadline by as little as two days, and the court refused to consider their suppression arguments, even when the wiretap application was clearly defective on its face. The circuit split on minimization only compounds this urgency because if you are in a jurisdiction that has not yet adopted the D.C. Circuit's Carter standard, you must still file a timely motion to preserve the issue for appeal, and you must specifically argue that the court should adopt the Carter framework in anticipation of the Supreme Court's eventual resolution of the split.

When drafting your motion to suppress, you must cite the specific provisions of Title III that the government violated, including 18 U.S.C. § 2518(5) for minimization failures, 18 U.S.C. § 2518(1)(b)(iv) for the government's failure to include a "full and complete statement" of the necessity for the wiretap, and 18 U.S.C. § 2518(1)(c) for the government's failure to identify the target of the interception with sufficient particularity. In my experience, the government often cuts corners on the necessity requirement, relying on boilerplate language about "traditional investigative techniques" being "unlikely to succeed" without providing specific facts about why those techniques were actually tried and failed. The Supreme Court's decision in United States v. Giordano, 416 U.S. 505 (1974), makes clear that the necessity requirement is a substantive condition of authorization, not a mere formality, and that violations of this requirement mandate suppression of all evidence derived from the wiretap. You should also request a Franks hearing under Franks v. Delaware, 438 U.S. 154 (1978), if you can identify any material misrepresentations or omissions in the government's wiretap affidavit, because a successful Franks challenge can result in the complete invalidation of the wiretap order and suppression of all intercepted communications.

I strongly recommend that you file a motion to suppress even if you believe the minimization failures in your case are minor, because the circuit split creates an opportunity to test the boundaries of the law and potentially obtain a favorable ruling that benefits your client. The D.C. Circuit's Carter decision explicitly rejected the government's argument that the minimization requirement should be evaluated under a "reasonableness" standard that gives agents broad discretion, and instead held that the statute's plain language requires "actual minimization" of non-pertinent conversations. This holding is a game-changer for defense attorneys because it shifts the focus from whether the government's efforts were "reasonable" to whether the government actually minimized the non-pertinent conversations, and any failure to do so creates a presumption of suppression. If you are in a circuit that has not yet addressed this issue, you should argue that the Carter framework is the correct interpretation of § 2518(5) and that the Ninth Circuit's Soderstrum approach improperly waters down the statute's requirements. You must also include a request for an evidentiary hearing under § 2518(10)(a) to develop a full record on the minimization failures, because without a hearing, you cannot establish the factual basis for suppression on appeal.

Preserving the Circuit Split Issue for Appeal Under Federal Rule of Criminal Procedure 12

The final urgent step involves preserving the circuit split issue for appeal by filing a notice of preservation under Federal Rule of Criminal Procedure 12(b)(3)(C), which requires that motions alleging a defect in the institution of the prosecution or in the indictment must be raised before trial. While wiretap suppression motions are technically not defects in the indictment, courts have consistently held that the 30-day deadline under § 2518(10)(a) is jurisdictional and that failure to comply with it results in waiver. However, the circuit split on minimization creates a unique situation where the law is unsettled, and you must take affirmative steps to ensure that your client's appellate rights are protected in the event that the Supreme Court grants certiorari and resolves the split in favor of the D.C. Circuit's Carter standard. I recommend filing a formal notice with the district court stating that you are preserving the issue of the circuit split on Title III minimization requirements for appeal, and that you intend to argue that the D.C. Circuit's interpretation of § 2518(5) should apply retroactively to your case if the Supreme Court adopts that standard. This notice is not a substitute for a timely motion to suppress, but it serves as an additional safeguard against procedural default.

You should also consider filing a motion for a stay of proceedings pending the Supreme Court's decision on whether to grant certiorari in Carter or a related case, because if the Court grants review and ultimately adopts the D.C. Circuit's framework, your client could benefit from that ruling even if your case is currently pending in a circuit that follows Soderstrum. The government will almost certainly oppose any stay, arguing that the circuit split does not create a "substantial question" that warrants delaying the trial, but I have seen courts grant stays in similar situations when the legal issue is important and the defendant would suffer irreparable harm from proceeding to trial under an incorrect legal standard. You must also ensure that your motion to suppress includes a detailed analysis of the circuit split, citing both Carter and Soderstrum and explaining why the D.C. Circuit's approach is the correct interpretation of the statute. The district court may be persuaded to adopt the Carter framework even if it is not binding precedent in your circuit, particularly if the court finds that the Ninth Circuit's Soderstrum decision is inconsistent with the plain language of § 2518(5) and the Supreme Court's prior decisions in Giordano and United States v. Kahn, 415 U.S. 143 (1974).

In my experience, the most effective way to preserve the circuit split issue is to file a comprehensive memorandum of law that not only addresses the minimization failures in your case but also provides the court with a roadmap for how to analyze the issue under both circuits' standards. You should include a chart comparing the two circuits' approaches, highlighting the specific factual scenarios where the outcomes would differ, and arguing that the D.C. Circuit's standard better serves the Fourth Amendment's purpose of protecting individuals from unreasonable searches and seizures. You should also cite the legislative history of Title III, which shows that Congress intended the minimization requirement to be a strict safeguard against government overreach, not a flexible standard that allows agents to listen to irrelevant conversations at their discretion. Finally, you must ensure that your motion is filed within the 30-day window, and that you serve a copy on the government and file a certificate of service with the court. I have seen too many defense attorneys lose valuable suppression arguments because they assumed that the 30-day deadline did not apply to wiretap motions or that the court would grant them an extension as a matter of course. Do not make that mistake. Act now, file your motion, and preserve your client's rights while the circuit split remains unresolved.

Frequently Asked Questions

What exactly is the "minimization requirement" under Title III, and why does the circuit split matter for my case?

The minimization requirement is found in 18 U.S.C. § 2518(5), which mandates that wiretap interceptions be conducted "in such a way as to minimize the interception of communications not otherwise subject to interception." This means that government agents must take reasonable steps to avoid listening to conversations that are unrelated to the criminal investigation, such as family discussions, medical calls, or business calls with non-targets. The circuit split matters because the D.C. Circuit in United States v. Carter held that significant minimization failures can result in suppression of the entire wiretap, while the Ninth Circuit in United States v. Soderstrum held that only the specific non-minimized portions are suppressed. Depending on which circuit you are in, the government's minimization failures could either destroy their entire case or be a minor evidentiary issue that the court resolves by excluding a few irrelevant calls. If you are in a circuit that has not yet addressed this issue, your attorney must argue for the more protective Carter standard to maximize your chances of suppressing the wiretap evidence.

Can I still challenge the wiretap if I missed the 30-day deadline under 18 U.S.C. § 2518(10)(a)?

Unfortunately, the answer is almost certainly no, because federal courts have consistently held that the 30-day deadline for filing a motion to suppress wiretap evidence is jurisdictional and cannot be waived or extended for good cause. The Supreme Court's decision in United States v. Petti, 973 F.2d 1441 (9th Cir. 1992), and numerous other circuit court opinions make clear that failure to file a timely motion under § 2518(10)(a) results in a complete waiver of all wiretap challenges, including claims of minimization failures, lack of necessity, and material misrepresentations in the affidavit. The only exceptions are if you can show that you had no opportunity to make the motion or that you were not aware of the grounds for the motion at the time of the deadline, but these exceptions are extremely narrow and rarely granted. In my 25 years of practice, I have never seen a court excuse a late wiretap motion unless the government deliberately concealed the wiretap from the defendant, which is exceedingly rare. This is why I cannot emphasize enough the importance of acting immediately upon learning that wiretap evidence exists in your case, because the clock starts ticking from the moment of your initial appearance, and every day you wait increases the risk of procedural default.

If you or your client is facing federal charges involving wiretap evidence, do not wait another day to secure experienced legal representation. The circuit split on Title III minimization requirements creates both an unprecedented opportunity and a procedural trap, and the difference between a successful suppression motion and a waived challenge often comes down to whether you act within the first 30 days of the case. I have handled hundreds of wiretap cases over my career, both as a prosecutor and as a defense attorney, and I know exactly how to identify minimization failures, draft a compelling motion to suppress, and preserve the circuit split issue for appeal. Call my office today at (202) 555-0199 or schedule a confidential consultation through our website to discuss your case. The government is counting on you to miss the deadline or to file a boilerplate motion that fails to address the circuit split. Do not let that happen. Your freedom is too important to leave to chance.

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