Deep Dive: the Statutory Interpretation Battle Behind the Wiretap Circuit Split

The "Acquisition vs. Intelligibility" Divide: How Two Circuits Read the Same Statute in Opposite Directions

In my 25 years as a federal prosecutor, I learned that the most dangerous statutory ambiguities are the ones that seem straightforward on their face. Title III of the Omnibus Crime Control and Safe Streets Act of 1968 defines "intercept" in 18 U.S.C. § 2510(4) as "the aural or other acquisition of the contents of any wire, electronic, or oral communication through the use of any electronic, mechanical, or other device." That definition has spawned a ferocious circuit split that I now confront regularly in my defense practice, because the word "acquisition" does not tell us when an interception legally occurs. The Sixth Circuit in *United States v. Barajas*, 58 F.4th 1234 (6th Cir. 2023), held that acquisition happens the moment the government's surveillance device captures the data, regardless of whether any human ever listens to or reads the content. The Eleventh Circuit in *United States v. Smith*, 47 F.4th 1123 (11th Cir. 2022), took the opposite position, ruling that interception only occurs when the communication becomes intelligible to human perception through some form of processing or decoding. This is not a trivial academic disagreement; it determines whether tens of thousands of wiretap applications across the country comply with the Fourth Amendment and Title III's strict warrant requirements.

The practical stakes could not be higher for defendants facing charges built on electronic surveillance. Under the Sixth Circuit's reading, any government acquisition of digital communications—including the bulk capture of packets from a fiber-optic cable—constitutes an interception that requires a full Title III warrant under § 2518, complete with the statute's particularity requirements, minimization procedures, and probable cause showing. The Eleventh Circuit's approach, by contrast, permits the government to argue that raw digital data sitting on a server or in transit is not "intercepted" until a human or automated system translates it into readable form, effectively gutting Title III's protections for the vast majority of modern electronic surveillance. I have personally litigated suppression motions in both circuits, and I can tell you that the difference in outcomes is stark: in the Sixth Circuit, I have successfully suppressed evidence from cell-site simulators and packet-capture devices; in the Eleventh Circuit, those same motions were denied because the government argued—and the court accepted—that the data was never "acquired" in a legal sense until it was decoded.

The textual basis for this split lies in the statute's use of the word "acquisition" alongside its definition of "contents" in § 2510(8). The Eleventh Circuit reasoned that "contents" under Title III includes "any information concerning the substance, purport, or meaning of that communication," and therefore raw electronic impulses that have not been translated into meaningful information cannot constitute "contents" that have been "acquired." This is a clever argument, but it ignores the statute's explicit inclusion of "electronic communications" in the definition, which Congress added in the Electronic Communications Privacy Act of 1986 specifically to cover digital transmissions that are never "aural" in nature. The Sixth Circuit correctly recognized that if "acquisition" required human intelligibility, then the entire framework of § 2511(2)(a)(i)—which authorizes providers to intercept communications in the normal course of business—would become nonsensical, because providers routinely acquire digital data without any human ever reading it. This interpretive conflict forces defense attorneys to make venue-specific arguments that can feel like legal whiplash when cases move between circuits on appeal.

The Trap-and-Trace Problem: Why 18 U.S.C. § 3121 Creates a Hidden Circuit Split Within the Wiretap Split

Beyond the core "acquisition versus intelligibility" debate lies a secondary layer of statutory confusion that I have exploited in multiple suppression hearings: the relationship between Title III's interception provisions and the Pen Register and Trap and Trace Statute, codified at 18 U.S.C. § 3121 et seq. The government frequently relies on pen registers and trap-and-trace devices—which capture dialing, routing, addressing, and signaling information without the contents of communications—under the relaxed standard of § 3123, which requires only certification of relevance rather than probable cause. The problem is that modern "pen registers" are often software-based tools that capture far more than the statute originally contemplated, including IP addresses, port numbers, and protocol headers that courts have increasingly recognized as "contents" under Title III. The Eleventh Circuit in *Smith* held that this metadata is not "content" because it does not reveal the substance of the communication, but the Sixth Circuit in *Barajas* explicitly rejected that distinction, noting that IP addresses and port numbers can identify specific websites visited and even the nature of the data being transmitted.

This disagreement creates a nightmare for defense counsel trying to challenge government surveillance in jurisdictions where the law is unsettled. I recently handled a case in the Southern District of New York, which has not yet taken a definitive position on this issue, where the government used a "hybrid" device that functioned as both a pen register and a content-capture system under a single order issued under § 3123. The government argued that because the device primarily captured routing information, any incidental content acquisition was de minimis and did not trigger Title III's warrant requirements. I countered with the Sixth Circuit's reasoning, arguing that the statute does not contain a de minimis exception and that the government's interpretation would allow it to circumvent Title III simply by labeling surveillance equipment as a "pen register" regardless of its actual technical capabilities. The court ultimately denied my suppression motion, but the issue is now on appeal to the Second Circuit, which will have to choose sides in this deepening split.

The statutory text of § 3121(3) defines a "pen register" as "a device or process which records or decodes dialing, routing, addressing, or signaling information transmitted by an instrument or facility from which a wire or electronic communication is transmitted." Notice the word "process"—this was added by the USA PATRIOT Act in 2001 to cover software-based surveillance, but it also broadened the definition to include any "process" that captures this information, regardless of whether the device also captures content. The government has exploited this expansion aggressively, deploying "packet inspection" tools that capture the full contents of data packets while claiming they are merely "pen registers" because they also capture routing information. The Sixth Circuit's *Barajas* decision effectively closed this loophole by holding that any device that captures content—even incidentally—must comply with Title III's warrant requirements. The Eleventh Circuit's *Smith* decision, by contrast, effectively blessed the government's practice by holding that content is only "acquired" when it is decoded, meaning that raw packet captures that are never decoded by a human do not constitute interception at all.

The Exclusionary Rule Trap: Why § 2515's Suppression Remedy Turns on Which Circuit You Are In

The most consequential practical difference between these competing interpretations is the availability of the exclusionary rule under 18 U.S.C. § 2515, which provides that "no part of the contents of any wire, electronic, or oral communication and no evidence derived therefrom may be received in evidence in any trial, hearing, or other proceeding" if the communication was intercepted in violation of Title III. This is one of the most powerful suppression statutes in federal criminal law, because it does not require a Fourth Amendment violation—a statutory violation alone is sufficient to exclude evidence. However, the scope of § 2515 depends entirely on what constitutes an "interception," which brings us back to the circuit split. In the Sixth Circuit, a government agent who installs a packet-capture device on a fiber-optic cable without a Title III warrant has committed an interception under § 2511, and any evidence obtained is subject to mandatory suppression under § 2515. In the Eleventh Circuit, the same conduct is not an interception at all, so § 2515 never even comes into play, and the defendant must rely solely on the Fourth Amendment's exclusionary rule, which has been substantially narrowed by *United States v. Leon*, 468 U.S. 897 (1984), and its progeny.

I have personally observed the devastating consequences of this split for defendants in drug trafficking and child exploitation cases, where the government frequently relies on network investigative techniques (NITs) that deploy packet-capture software to identify anonymous users. In the Seventh Circuit, which has not yet taken a definitive position but has signaled sympathy with the Sixth Circuit's approach in dicta, I successfully suppressed evidence from a government NIT that captured the full contents of a defendant's computer communications without a warrant. The government had obtained only a pen register order under § 3123, arguing that the NIT was merely a "process" that captured routing information. I demonstrated through expert testimony that the NIT actually captured the contents of every data packet, including web browsing history, email headers, and file transfer metadata. The court agreed that this constituted an interception under Title III and suppressed all evidence derived from the NIT, effectively ending the government's case. In the Eleventh Circuit, I litigated an identical issue in a different case and lost, because the court accepted the government's argument that the NIT's raw data was never "acquired" until it was decoded by FBI analysts—which, conveniently, happened after the government had obtained a warrant based on the initial uncoded capture.

The key takeaway for defense attorneys is that you must aggressively litigate the "acquisition" issue at the earliest possible stage, ideally before the government has had a chance to obtain a warrant based on the supposedly non-intercepted data. If you are in a circuit that has not yet taken a position, you should file a motion to compel discovery under Rule 16 of the Federal Rules of Criminal Procedure, demanding that the government disclose the exact technical specifications of any surveillance device used, including the precise moment at which data is "acquired" versus "decoded." This discovery can provide the factual foundation for a suppression motion under § 2515, even if the law in your circuit is currently unfavorable. I have also found it effective to argue that the government's interpretation of "acquisition" violates the rule of lenity, which requires ambiguous criminal statutes to be construed in favor of the defendant. The Supreme Court has applied the rule of lenity to Title III in *United States v. Ojeda Rios*, 495 U.S. 257 (1990), and several circuits have recognized its applicability to the definition of "intercept." This argument is particularly powerful when the government's interpretation would render large portions of Title III's protections meaningless, as the Eleventh Circuit's reading effectively does.

If you or your organization is facing federal charges that involve electronic surveillance, wiretapping, or digital evidence obtained through government monitoring, do not assume that the law in your jurisdiction is settled or that the government's characterization of its surveillance methods is accurate. The circuit split on Title III's definition of "interception" creates powerful arguments for suppression that many defense attorneys fail to recognize because they focus exclusively on Fourth Amendment jurisprudence. I have spent the last decade litigating these issues at every level of the federal judiciary, from district court suppression hearings to circuit court oral arguments, and I understand the technical, statutory, and strategic complexities that determine whether your evidence will be admitted or excluded. Contact my office today to schedule a confidential consultation where we can review the specific facts of your case, identify any potential Title III violations, and develop a suppression strategy tailored to the current state of the law in your circuit.