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Selected Works

Fourth Amendment

Articles 1 - 30 of 85

Full-Text Articles in Criminal Procedure

Seizing A Cell Phone Incident To Arrest: Data Extraction Devices, Faraday Bags, Or Aluminum Foil As A Solution To The Warrantless Cell Phone Search Problem, Adam M. Gershowitz Sep 2019

Seizing A Cell Phone Incident To Arrest: Data Extraction Devices, Faraday Bags, Or Aluminum Foil As A Solution To The Warrantless Cell Phone Search Problem, Adam M. Gershowitz

Adam M. Gershowitz

No abstract provided.


Illegal Predicate Searches And Tainted Warrants After Heien And Strieff, Kit Kinports Jul 2019

Illegal Predicate Searches And Tainted Warrants After Heien And Strieff, Kit Kinports

Kit Kinports

A long-standing debate has surrounded the relationship between two features of the Fourth Amendment's exclusionary rule - the fruits of the poisonous tree doctrine and the good-faith exception - in cases where the evidence used to secure a search warrant was obtained in violation of the defendant's constitutional rights. Some judges and scholars maintain that the fruits of the poisonous tree doctrine takes precedence in such "tainted warrant" cases, leading to the suppression of any evidence seized in executing the warrant unless the warrant was supported by probable cause independent of the illegal predicate search. By contrast, others believe that …


Heien'S Mistake Of Law, Kit Kinports Jul 2019

Heien'S Mistake Of Law, Kit Kinports

Kit Kinports

The Supreme Court has been whittling away at the Fourth Amendment for decades. The Court's 2014 ruling in Heien v. North Carolina allowing the police to make a traffic stop based on a reasonable mistake of law generated little controversy among the Justices and escaped largely unnoticed by the press-perhaps because yet another Supreme Court decision reading the Fourth Amendment narrowly is not especially noteworthy or because the opinion's cursory and overly simplistic analysis equating law enforcement's reasonable mistakes of fact and law minimized the significance of the Court's decision. But the temptation to dismiss Heien as just another small …


The Fourth Amendment And New Technologies: Constitutional Myths And The Case For Caution, Orin S. Kerr Jul 2019

The Fourth Amendment And New Technologies: Constitutional Myths And The Case For Caution, Orin S. Kerr

Orin Kerr

To one who values federalism, federal preemption of state law may significantly threaten the autonomy and core regulatory authority of The Supreme Court recently considered whether a1mmg an infrared thermal imaging device at a suspect's home can violate the Fourth Amendment. Kyllo v. United States announced a new and comprehensive rule: the government's warrantless use of senseenhancing technology that is "not in general use" violates the Fourth Amendment when it yields "details of the home that would previously have been unknowable without physical intrusion." Justice Scalia's majority opinion acknowledged that the Court's rule was not needed to resolve the case …


Carpenter V. United States And The Fourth Amendment: The Best Way Forward, Stephen E. Henderson Dec 2017

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

Stephen E Henderson

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 …


Fourth Amendment Anxiety, Stephen E. Henderson, Kiel Brennan-Marquez Dec 2017

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

Stephen E Henderson

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. …


Small Cells, Big Problems: The Increasing Precision Of Cell Site Location Information And The Need For Fourth Amendment Protections, Robert M. Bloom, William T. Clark May 2017

Small Cells, Big Problems: The Increasing Precision Of Cell Site Location Information And The Need For Fourth Amendment Protections, Robert M. Bloom, William T. Clark

Robert M. Bloom

The past fifty years has witnessed an evolution in technology advancement in police surveillance. Today, one of the essential tools of police surveillance is something most Americans carry with them in their pockets every day, the cell phone. Cell phones not only contain a huge repository of personal data, they also provide continuous surveillance of a person’s movement known as cell site location information (CSLI). In 1986, Congress sought to provide some privacy protections to CSLI in the Stored Communication Act. Although this solution may have struck the proper balance in an age when cell phones were a mere novelty …


Stubbornness Of Pretexts, Daniel B. Yeager Mar 2017

Stubbornness Of Pretexts, Daniel B. Yeager

Daniel B. Yeager

This Article will reflect on (1) how the Whren v. United States failure to acknowledge what counts as a pretext accounts for the residual confusion as to whether or not Whren really has killed off the pretext argument in constitutional criminal procedure, and (2) the extent to which the Court in Sullivan compounded that failure, which I hope to lightly correct here by distinguishing motives from intentions and then by elaborating the role that each plays, or at least should play, in Fourth Amendment jurisprudence.


Search, Seizure And The Positive Law: Expectations Of Privacy Outside The Fourth Amendment, Daniel B. Yeager Mar 2017

Search, Seizure And The Positive Law: Expectations Of Privacy Outside The Fourth Amendment, Daniel B. Yeager

Daniel B. Yeager

This Article is about the misunderstood relationship between the Fourth Amendment and the positive law. It shows how state property law and other expressions of the positive law are more resilient and useful to Fourth Amendment analysis than the Court's decisions of the past three decades recognize.


Overcoming Hiddenness: The Role Of Intentions In Fourth Amendment Analysis, Daniel B. Yeager Mar 2017

Overcoming Hiddenness: The Role Of Intentions In Fourth Amendment Analysis, Daniel B. Yeager

Daniel B. Yeager

This Article rehearses a response to the problems posed to and by the Supreme Court's attempts to work out the meaning and operation of the word "search." After commencing Part II by meditating on the notion of privacy, I take up its relation to the antecedent suspicion or knowledge that Fourth-Amendment law requires as a justification for all privacy invasions. From there, I look specifically at that uneasy relation in Supreme Court jurisprudence, which has come to privilege privacy over property as a Fourth Amendment value. From there, Part III reviews the sources or bases that can tell us what …


Testimony On Unmanned Aircraft Systems Rules And Regulations, Stephen E. Henderson Sep 2016

Testimony On Unmanned Aircraft Systems Rules And Regulations, Stephen E. Henderson

Stephen E Henderson

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 …


If You Fly A Drone, So Can Police, Stephen E. Henderson May 2016

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

Stephen E Henderson


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...


Fourth Amendment Remedies As Rights: The Warrant Requirement, David Gray Apr 2016

Fourth Amendment Remedies As Rights: The Warrant Requirement, David Gray

David C. Gray

The constitutional status of the warrant requirement is hotly debated. Critics argue that neither the text nor history of the Fourth Amendment support a warrant requirement. Also questioned is the warrant requirement’s ability to protect Fourth Amendment interests. Perhaps in response to these concerns, the Court has steadily degraded the warrant requirement through a series of widening exceptions. The result is an unsatisfying jurisprudence that fails on both conceptual and practical grounds.

These debates have gained new salience with the emergence of modern surveillance technologies such as stingrays, GPS tracking, drones, and Big Data. Although a majority of the Court …


Ou Professor: Fourth Amendment At Heart Of Dispute Between Fbi, Apple, Stephen E. Henderson Mar 2016

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

Stephen E Henderson

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. . . .


Dna Typing: Emerging Or Neglected Issues, David H. Kaye, Edward J. Imwinkelried Mar 2016

Dna Typing: Emerging Or Neglected Issues, David H. Kaye, Edward J. Imwinkelried

David Kaye

DNA typing has had a major impact on the criminal justice system. There are hundreds of opinions and thousands of cases dealing with DNA evidence. Yet, at virtually every stage of the process, there are important issues that are just emerging or that have been neglected.At the investigative stage, courts have barely begun to focus on the legal limitations on the power of the police to obtain samples directly from suspects and to use the data from DNA samples in various ways. Issues such as the propriety of "DNA dragnets" (in which large numbers of individuals in a geographic area …


Dna Identification Databases: Legality, Legitimacy, And The Case For Population-Wide Coverage, David H. Kaye, Michael E. Smith Mar 2016

Dna Identification Databases: Legality, Legitimacy, And The Case For Population-Wide Coverage, David H. Kaye, Michael E. Smith

David Kaye

Over the past decade, law enforcement authorities have amassed huge collections of DNA samples and the identifying profiles derived from them. Large DNA databanks routinely help to identify the guilty and to exonerate the innocent, but as the databanks grow, so do fears about civil liberties. Perhaps the most controversial policy issue in the creation of these databases is the question of coverage: Whose DNA profiles should be stored in them? The possibilities extend from convicted violent sex offenders to all convicted felons, to everyone arrested, to the entire population. This Article questions the rationales for drawing the line at …


Faith-Based Miranda: Why The New Missouri V. Seibert Police Bad Faith Test Is A Terrible Idea, Joelle A. Moreno Jan 2016

Faith-Based Miranda: Why The New Missouri V. Seibert Police Bad Faith Test Is A Terrible Idea, Joelle A. Moreno

Joelle A. Moreno

No abstract provided.


Veteran Police Officers And Three-Dollar Steaks: The Subjective/Objective Dimensions Of Probable Cause And Reasonable Suspicion, Kit Kinports Jan 2016

Veteran Police Officers And Three-Dollar Steaks: The Subjective/Objective Dimensions Of Probable Cause And Reasonable Suspicion, Kit Kinports

Kit Kinports

This Article addresses two issues surrounding probable cause and reasonable suspicion that test the line between subjective and objective standards in Fourth Amendment jurisprudence: the extent to which a particular police officer’s training and experience ought to be considered in measuring probable cause and reasonable suspicion, and the relevance of the officer’s subjective beliefs about the presence of a weapon in assessing the reasonable suspicion required to justify a frisk. Although both questions have split the lower courts and remain unresolved by the Supreme Court, the majority of courts treat them inconsistently, recognizing the importance of an officer’s training, experience, …


The Dog Days Fourth Amendment Jurisprudence, Kit Kinports Jan 2016

The Dog Days Fourth Amendment Jurisprudence, Kit Kinports

Kit Kinports

This Article discusses Florida v. Harris and Florida v. Jardines, the two Fourth Amendment drug dog opinions issued by the Supreme Court earlier this year. Together the cases hold that a narcotics detection dog effects a “search” when it intrudes on a constitutionally protected area in order to collect evidence, but that the dog’s positive alert is generally sufficient to support a finding of probable cause. The piece argues that both cases essentially generate a bright-line rule, thereby deviating from precedent that favored a more amorphous standard considering all the surrounding circumstances. Like many purportedly clear rules, the ones flowing …


Probable Cause And Reasonable Suspicion: Totality Tests Or Rigid Rules?, Kit Kinports Jan 2016

Probable Cause And Reasonable Suspicion: Totality Tests Or Rigid Rules?, Kit Kinports

Kit Kinports

This piece argues that the Supreme Court's April 2014 decision in Navarette v. Calfornia, like last Term's opinion in Florida v. Harris, deviates from longstanding Supreme Court precedent treating probable cause and reasonable suspicion as totality-of-the-circumstances tests. Instead, these two recent rulings essentially rely on rigid rules to define probable cause and reasonable suspicion. The article criticizes the Court for selectively endorsing bright-line tests that favor the prosecution, and argues that both decisions generate rules that oversimplify and therefore tend to be overinclusive.


Diminishing Probable Cause And Minimalist Searches, Kit Kinports Jan 2016

Diminishing Probable Cause And Minimalist Searches, Kit Kinports

Kit Kinports

This paper comments on recent Supreme Court opinions that have used phrases such as "reasonable belief" and "reason to believe" when analyzing intrusions that generally require proof of probable cause. Historically, the Court used these terms as shorthand references for both probable cause and reasonable suspicion. While this lack of precision was unobjectionable when the concepts were interchangeable, that has not been true since Terry v. Ohio created a distinction between the two standards. When the Justices then resurrect these terms without situating them in the dichotomy between probable cause and reasonable suspicion, it is not clear whether they are …


Culpability, Deterrence, And The Exclusionary Rule, Kit Kinports Jan 2016

Culpability, Deterrence, And The Exclusionary Rule, Kit Kinports

Kit Kinports

This Article discusses the Supreme Court’s use of the concepts of culpability and deterrence in its Fourth Amendment jurisprudence, in particular, in the opinions applying the good-faith exception to the exclusionary rule. The contemporary Court sees deterrence as the exclusionary rule’s sole function, and the Article begins by taking the Court at its word, evaluating its exclusionary rule case law on its own terms. Drawing on three different theories of deterrence – economic rational choice theory, organizational theory, and the expressive account of punishment – the Article analyzes the mechanics by which the exclusionary rule deters unconstitutional searches and questions …


Criminal Procedure In Perspective, Kit Kinports Jan 2016

Criminal Procedure In Perspective, Kit Kinports

Kit Kinports

This Article attempts to situate the Supreme Court's constitutional criminal procedure jurisprudence in the academic debates surrounding the reasonable person standard, in particular, the extent to which objective standards should incorporate a particular individual's subjective characteristics. Analyzing the Supreme Court's search and seizure and confessions opinions, I find that the Court shifts opportunistically from case to case between subjective and objective tests, and between whose point of view - the police officer's or the defendant's - it views as controlling. Moreover, these deviations cannot be explained either by the principles the Court claims underlie the various constitutional provisions at issue …


Camreta And Al-Kidd: The Supreme Court, The Fourth Amendment, And Witnesses, Kit Kinports Jan 2016

Camreta And Al-Kidd: The Supreme Court, The Fourth Amendment, And Witnesses, Kit Kinports

Kit Kinports

Although few noticed the link between them, two Supreme Court cases decided in the same week last Term, Ashcroft v. al-Kidd and Camreta v. Greene, both involved the Fourth Amendment implications of detaining witnesses to a crime. Al-Kidd, an American citizen, was arrested under the federal material witness statute in connection with an investigation into terrorist activities, and Greene, a nine-year-old suspected victim of child abuse, was seized and interrogated at school by two state officials. The opinions issued in the two cases did little to resolve the constitutional issues that arise in witness detention cases, and in fact muddied …


Lawn Signs: A Fourth Amendment For Constitutional Curmudgeons, Stephen E. Henderson, Andrew G. Ferguson Dec 2015

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

Stephen E Henderson

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 Dec 2015

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

Stephen E Henderson

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 Dec 2015

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

Stephen E Henderson

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 Dec 2015

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

Stephen E Henderson

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 …


Section 1983 Cases In The October 2004 Term, Martin A. Schwartz Oct 2015

Section 1983 Cases In The October 2004 Term, Martin A. Schwartz

Martin A. Schwartz

No abstract provided.


Dangerous Dicta, David Gray Oct 2015

Dangerous Dicta, David Gray

David C. Gray

In United States v. Heller, the Court held that individuals have a Second Amendment right to keep and bear arms apart from their associations with state militias. Although that holding was and remains controversial, less attention has been paid to what the Heller Court had to say about the Fourth Amendment. Writing for the Court in Heller, Justice Scalia asserts that the phrase “right of the people” in the Fourth Amendment “unambiguously refers to individual rights, not ‘collective’ rights or rights that may only be exercised through participation in some corporate body.” By any definition, this is dicta. It is …