Fourth Amendment Commons^™

The Warrant Exception That Isn't: Fisa Section 702, "Defensive" Searches, And The Fourth Amendment, Noah C. Chauvin

Faculty Articles

Section 702 of the Foreign Intelligence Surveillance Act allows the government to conduct warrantless electronic surveillance of non-Americans who are located overseas. Although the surveillance targets foreigners, Americans' communications are "incidentally" collected, too. Once the government has acquired Americans' communications, court-approved rules allow it to conduct warrantless searches for and through them in its Section 702 databases. Intelligence agencies have used these rules to turn this foreign intelligence program into a domestic spying tool, conducting tens of thousands of warrantless "backdoor" searches for Americans' private communications obtained under Section 702 every year.

Section 702 periodically sunsets; Congress most recently reauthorized …

Byte By Byte: Breaking Down The Third-Party Doctrine And Reproductive Health Apps After Dobbs, Travis Handler

Oklahoma Law Review

No abstract provided.

Curing Terry’S Colorblindness, Ilan Friedmann-Grunstein

Oklahoma Law Review

No abstract provided.

More Than Friends: A New Theory For The Third-Party Doctrine, Eang Ngov

Faculty Articles

When a person gives information or something tangible to someone or a business, the Fourth Amendment’s third-party doctrine allows the government to obtain that evidence without a warrant or probable cause. The third-party doctrine is premised on the rationale that we hold no reasonable expectation of privacy when we voluntarily expose information to others, that we assume the risk that the third party would share the information, and that we must deal with the consequences of that misplaced trust. The doctrine originated from a series of cases where law enforcement obtained information revealed by criminals through their mistaken trust of …

A Wolf In Sheep’S Attire: How Consent Enfeebles Our Fourth Amendment, Stephen E. Henderson, Guha Krishnamurthi

Faculty Articles

The Fourth Amendment is a mirage. On paper—in the rules studied by law students, analyzed by scholars, and proclaimed by jurists—its limitations are many and, oftentimes, significant. Yet the experience of large numbers of Americans is entirely to the contrary, thanks to the rights-annihilating, under-theorized exception of “consent.” Under its guise, law enforcement officers routinely conduct what would otherwise be constitutionally-restrained searches and seizures, and they do so without meaningful explanation or assent. Fortunately, change—whether legislative or (ideally) constitutional—could be straightforward. Thanks to other sufficient triggers, consent could be replaced by a narrow, rights-protective doctrine under which law enforcement could …

Taking Aim At Shotspotter: Gunshot Surveillance, The Fourth Amendment, And An Argument For Sonic Security, Emily A. Fogg

Oklahoma Law Review

No abstract provided.

Asymmetries, Norm Matching, And The Pursuit Of Equity Between The Police And The Public, Eang Ngov

Faculty Articles

Concerns about police abuse and overcriminalization are on the forefront of public conscientiousness. In spite of the Black Lives Matter movement and calls for police reform, law enforcement officials enjoy a variety of criminal procedure loopholes and double standards, which the United States Supreme Court has ratified through its creation of the open fields, mistake of law, and third party doctrines, as well as its acceptance of deceptive police practices. This Article analyzes the asymmetries between permissible civilian conduct and permissible police conduct to make a broader, systemic critique of the double standards and loopholes that pervade constitutional criminal procedure. …

On Warrants & Waiting: Electronic Warrants & The Fourth Amendment, Tracy Hresko Pearl

Faculty Articles

Police use of electronic warrant (“e-warrant”) technology has increased significantly in recent years. E-warrant technology allows law enforcement to submit, and magistrate judges to review and approve, warrant applications on computers, smartphones, and tablets, often without any direct communication. Police officers report that they favor e-warrants over their traditional counterparts because they save officers a significant amount of time in applying for warrants by eliminating the need to appear in-person before a magistrate. Legal scholars have almost uniformly praised e-warrant technology, as well, arguing that use of these systems will increase the number of warrants issued throughout the United States …

Search And Seizure Budgets, Kiel Brennan-Marquez, Stephen E. Henderson

Faculty Articles

This article proposes a new means of restraining police power: quantitative limits on the number of law enforcement intrusions—searches and seizures—that may occur over a given period of time. Like monetary constraints, search and seizure budgets would aim to curb abusive policing and improve democratic oversight. But unlike their monetary counterparts, budgets would be indexed directly to the specific police activities that most enable escalation and abuse. What is more, budgets are a tool that finds support, conceptually, in the American framing experience. The Fourth Amendment has long been understood to require procedural limits, such as probable cause, on specific …

In Celebration Of Dissents (And Lengthy Textbooks): How Digital Became Different For The Fourth Amendment And Why It Is Time For A Real Warrant Default, Stephen E. Henderson

Faculty Articles

The last decade has brought tremendous change to the Fourth Amendment, finally resulting in a ‘digital is different’ norm. We stand at an inflection point between a monolithic, analog past and a murky future of yet-unarticulated constitutional digital policing rules. It is a good time, then, to reflect upon how we came to be here and where we ought to go. This Essay first looks back to a monumental, majestic dissent: that of Justice Louis Brandeis in the 1928 decision of Olmstead v. United States. Every American, and especially every law student, ought to know that opinion, and judges …

Accidental Wiretaps: The Implications Of False Positives By Always-Listening Devices For Privacy Law & Policy, Lindsey Barrett, Ilaria Liccardi

Oklahoma Law Review

No abstract provided.

The Fourth Amendment In The Age Of Autonomous Vehicles, Tracy Hresko Pearl

Faculty Articles

Autonomous vehicles exist at the intersection of two extremely turbulent areas of Fourth Amendment jurisprudence—traffic stops and emerging technologies—and have implications for virtually every major search and seizure doctrine developed over the last century. Complicating matters even further is the fact that car manufacturers are developing these vehicles at varying rates, meaning that vehicles with differing levels of automation are being introduced onto the consumer market at different (and often unpredictable) times. Each level of vehicle automation, in turn, poses unique issues for law enforcement. Semi-autonomous (Levels 2 and 3) vehicles make it extremely difficult for police to distinguish between …

The End Of The War On Drugs, The Peace Dividend And The Renewed Fourth Amendment?, Michael Vitiello

Oklahoma Law Review

No abstract provided.

Carpenter V. United States And The Fourth Amendment: The Best Way Forward, Stephen E. Henderson

Faculty Articles

We finally have a federal ‘test case.’ In Carpenter v. United States, the Supreme Court is poised to set the direction of the Fourth Amendment in the digital age. The case squarely presents how the twentieth-century third party doctrine will fare in contemporary times, and the stakes could not be higher. This Article reviews the Carpenter case and how it fits within the greater discussion of the Fourth Amendment third party doctrine and location surveillance, and I express a hope that the Court will be both a bit ambitious and a good measure cautious. As for ambition, the Court …

Police Ignorance And Mistake Of Law Under The Fourth Amendment, Eang Ngov

Faculty Articles

No abstract provided.

Fourth Amendment Anxiety, Kiel Brennan-Marquez, Stephen E. Henderson

Faculty Articles

In Birchfield v. North Dakota (2016), the Supreme Court broke new Fourth Amendment ground by establishing that law enforcement’s collection of information can be cause for “anxiety,” meriting constitutional protection, even if subsequent uses of the information are tightly restricted. This change is significant. While the Court has long recognized the reality that police cannot always be trusted to follow constitutional rules, Birchfield changes how that concern is implemented in Fourth Amendment law, and importantly, in a manner that acknowledges the new realities of data-driven policing. Beyond offering a careful reading of Birchfield, this Article has two goals. First, …

Get Off My Porch: United States V. Carloss And The Escalating Dangers Of “Knock And Talks”, Skyler K. Sikes

Oklahoma Law Review

No abstract provided.

United States V. Carloss: Should The Police Act Like Good Neighbors?, Cole Mclanahan

Oklahoma Law Review

No abstract provided.

Fbi's Carnivore: Under The Fourth Amendment And The Usa Patriot Act, Scott Griner

Oklahoma Journal of Law and Technology

No abstract provided.

Emailer Beware: The Fourth Amendment And Electronic Mail, E. Parker Lowe

Oklahoma Journal of Law and Technology

No abstract provided.

Digital Effects: The Fourth Amendment And Computer Searches Warrants, Ash Moore

Oklahoma Journal of Law and Technology

No abstract provided.

Testimony On Unmanned Aircraft Systems Rules And Regulations, Stephen Henderson

Other Faculty Publications

Chairman Barrington, Vice Chair Brooks, members of the Committee on Public Safety, Senators, and distinguished guests, I am grateful for the opportunity to speak to you today about unmanned aerial systems, or drones, and more particularly about their federal constitutional implications and what might be the constitutional restrictions on any legislation you might like to enact. I am the Judge Haskell A. Holloman Professor of Law at the University of Oklahoma, where my teaching and research focus on criminal law and procedure and privacy, including the constitutional rights pertaining thereto.My topic is not an easy one. The constitutional law is …

If You Fly A Drone, So Can Police, Stephen Henderson

Other Faculty Publications

Written for Slate's Future Tense.According to the U.S. Constitution, the more you fly your drone, the more police can fly theirs. “Come on,” you might reply, “that hoary document”—and, yes, sorry to make you the sort who drops words like hoary—“that hoary document surely says nothing about drones.” But in fact it does. At least it does as interpreted by the courts. In particular, it is how they interpret the Fourth Amendment. So, to understand this aspect of drones, we first must understand this provision of the Bill of Rights...

Ou Professor: Fourth Amendment At Heart Of Dispute Between Fbi, Apple, Stephen Henderson

Other Faculty Publications

The dispute between the FBI and Apple Inc. over the unlocking of the iPhone used by one of the San Bernadino shooters is important to all Americans. And so it's good that it is getting a wide airing. But when it comes to issues that have complicated tradeoffs, it can be important not just that we have the conversation, but that we use the right words. And here the debate deserves very mixed reviews. . . .

Lawn Signs: A Fourth Amendment For Constitutional Curmudgeons, Andrew Ferguson, Stephen E. Henderson

Faculty Articles

What is the constitutional significance of the proverbial “keep off the grass” sign? This question—asked by curmudgeonly neighbors everywhere—has been given new currency in a recent decision by the United States Supreme Court. Indeed, Florida v. Jardines might have bestowed constitutional curmudgeons with significant new Fourth Amendment protections. By expressing expectations regarding—and control over—access to property, “the people” may be able to claim greater Fourth Amendment protections not only for their homes, but also for their persons, papers, and effects. This article launches a constitutionally grounded, but lighthearted campaign of citizen education and empowerment: Fourth Amendment LAWn signs. With every …

A Rose By Any Other Name: Regulating Law Enforcement Bulk Metadata Collection, Stephen E. Henderson

Faculty Articles

In Other People’s Papers, Jane Bambauer argues for careful reform of the Fourth Amendment’s third party doctrine, providing an important contribution to an increasingly rich field of scholarship, judicial opinion, statute, and law reform. Bambauer is especially concerned with access to bodies of third-party data that can be filtered and mined, as they can be privacy invasive but also effective and less subject to traditional investigative prejudices and limitations. Although her article provocatively overclaims in trying to set itself apart from existing proposals, by analyzing existing constitutional and statutory law—including what I have termed a “limited” third party doctrine—and comparing …

Teaching Criminal Procedure: Why Socrates Would Use Youtube, Stephen E. Henderson, Joseph Thai

Faculty Articles

In this invited contribution to the Law Journal's annual Teaching Issue, we pay some homage to the great philosopher whose spirit allegedly guides our classrooms, in service of two concrete goals. One, we employ dialogue to describe the “nuts and bolts” of teaching Criminal Procedure, most of which are equally relevant to any doctrinal law school course (including course description, office hours, seating charts and attendance, class decorum and recording, student participation, laptops, textbooks, class preparation and presentation, and exams). Two, we explain the benefits of using multimedia in the classroom, including a few of the many modules found on …

Fourth Amendment Time Machines (And What They Might Say About Police Body Cameras), Stephen E. Henderson

Faculty Articles

When it comes to criminal investigation, time travel is increasingly possible. Despite longstanding roots in traditional investigation, science is today providing something fundamentally different in the form of remarkably complete digital records. And those big data records not only store our past, but thanks to data mining they are in many circumstances eerily good at predicting our future. So, now that we stand on the threshold of investigatory time travel, how should the Fourth Amendment and legislation respond? How should we approach bulk government capture, such as by a solar-powered drone employing wide-area persistent stare technology? Is it meaningfully different …

Testimony On Oklahoma Civil Asset Forfeiture Reform, Stephen Henderson

Other Faculty Publications

I am grateful for the opportunity to speak to you today about Senate Bill 838 and the reform of Oklahoma’s civil asset forfeiture. I am a professor of law at the University of Oklahoma, where my teaching and research focus on criminal law and procedure. I have experience achieving consensus solutions in contested areas of law, most notably in the six years I spent drafting a new set of ABA Criminal Justice Standards, and I know that change is rarely easy. No matter the topic and whatever the status quo, there is sure to be someone who feels it is …

Regulating Drones Under The First And Fourth Amendments, Marc Blitz, James Grimsley, Stephen E. Henderson, Joseph Thai

Faculty Articles

The FAA Modernization and Reform Act of 2012 requires the Federal Aviation Administration to integrate unmanned aerial vehicles (UAVs), or drones, into the national airspace system by September of this year. Yet perhaps because of their chilling accuracy in targeted killings abroad, perhaps because of an increasing consciousness of diminishing privacy more generally, and perhaps simply because of a fear of the unknown, divergent UAV-restrictive legislation has been proposed in Congress and enacted in a number of states. Ultimately, given UAV utility and cost effectiveness over a vast range of tasks, widespread commercial use seems certain. So it is imperative …