Law Commons^™

Computationally Assessing Suspicion, Wesley M. Oliver

Law Faculty Publications

Law enforcement officers performing drug interdiction on interstate highways have to decide nearly every day whether there is reasonable suspicion to detain motorists until a trained dog can sniff for the presence of drugs. The officers’ assessments are often wrong, however, and lead to unnecessary detentions of innocent persons and the suppression of drugs found on guilty ones. We propose a computational method of evaluating suspicion in these encounters and offer experimental results from early efforts demonstrating its feasibility. With the assistance of large language and predictive machine learning models, it appears that judges, advocates, and even police officers could …

The Fourth Amendment's Constitutional Home, Gerald S. Dickinson

Articles

The home enjoys omnipresent status in American constitutional law. The Bill of Rights, peculiarly, has served as the central refuge for special protections to the home. This constitutional sanctuary has elicited an intriguing textual and doctrinal puzzle. A distinct thread has emerged that runs through the first five amendments delineating the home as a zone where rights emanating from speech, smut, gods, guns, soldiers, searches, sex, and self-incrimination enjoy special protections. However, the thread inexplicably unravels upon arriving at takings. There, the constitutional text omits and the Supreme Court’s doctrine excludes a special zone of safeguards to the home. This …

Are Police Officers Bayesians? Police Updating In Investigative Stops, Jeffrey A. Fagan, Lila J.E. Nojima

Faculty Scholarship

Theories of rational behavior assume that actors make decisions where the benefits of their acts exceed their costs or losses. If those expected costs and benefits change over time, behavior will change accordingly as actors learn and internalize the parameters of success and failure. In the context of proactive policing, police stops that achieve any of several goals — constitutional compliance, stops that lead to “good” arrests or summonses, stops that lead to seizures of weapons, drugs, or other contraband, or stops that produce good will and citizen cooperation — should signal to officers the features of a stop that …

Geofence Warrants: An Attack On The Fourth Amendment, Golden Gate University School Of Law

GGU Law Review Blog

Imagine a world where a king could compel the search of anybody, anywhere, and for anything. This world inspired James Madison to draft the Fourth Amendment, and is also a world we are returning to. The Fourth Amendment was created to protect against indiscriminate general warrants used in Georgian England, which subjected colonists to unrestricted invasions of privacy. Today, these general warrants come with a new name and in a new form: geofence warrants. Geofence warrants permit law enforcement to obtain the location data of every person that was in a specific geographic area where a crime occurred, in an …

Cops And Cars: How The Automobile Drove Fourth Amendment Law, Tracey Maclin

Faculty Scholarship

This is an essay on Professor Sarah A. Seo’s new book, Policing the Open Road: How Cars Transformed American Freedom (Harvard Univ. Press 2019). I focus on Professor Seo’s analysis of Carroll v. United States, 267 U.S. 132 (1925) and Brinegar v. United States, 338 U.S. 160 (1949). Carroll is important not only because it was the Court’s first car case. Understanding Carroll (and Brinegar, which solidified and expanded Carroll’s holding) is essential because, nearly one hundred years later, its logic continues to direct how the modern Court resolves Fourth Amendment claims of motorists. Put simply, a majority of today’s …

Cops And Cars: How The Automobile Drove Fourth Amendment Law, Tracey Maclin

UF Law Faculty Publications

This is an essay on Professor Sarah A. Seo’s new book, Policing the Open Road: How Cars Transformed American Freedom (Harvard Univ. Press 2019). I focus on Professor Seo’s analysis of Carroll v. United States, 267 U.S. 132 (1925) and Brinegar v. United States, 338 U.S. 160 (1949). Carroll is important not only because it was the Court’s first car case. Understanding Carroll (and Brinegar, which solidified and expanded Carroll’s holding) is essential because, nearly one hundred years later, its logic continues to direct how the modern Court resolves Fourth Amendment claims of motorists. Put simply, a majority of today’s …

Martin Luther King Jr. And Pretext Stops (And Arrests): Reflections On How Far We Have Not Come Fifty Years Later, Tracey Maclin, Maria Savarese

UF Law Faculty Publications

By January, 1956, the Montgomery Bus boycott was in full-swing. Black citizens in Montgomery, Alabama were refusing to ride the city’s private buses to protest racially segregated seating. On the afternoon of January 26, 1956, twenty-seven-year-old Martin Luther King, Jr. had finished his day of work at the Dexter Avenue Baptist Church in Montgomery. On his drive home, King stopped his vehicle to offer a ride to a group of bus boycotters standing at a downtown car-pool location. After the boycotters entered King’s car, two motorcycle policemen pulled-in behind King’s vehicle. While everyone in King’s car tried to remain calm, …

Utah V. Strieff: The Gratuitous Expansion Of The Attenuation Doctrine, Courtney Watkins

Maryland Law Review Online

No abstract provided.

The 2016 Amendments To Criminal Rule 41: National Search Warrants To Seize Cyberspace, “Particularly” Speaking, Devin M. Adams

Law Student Publications

George Orwell's dystopia, with the ever-watchful Big Brother, has seemingly become a reality with the recently passed amendments to Rule 41 of the Federal Rules of Criminal Procedure. Rule 41, governing searches and seizures, now permits magistrate judges to authorize agents- under a single warrant- to "remotely access," and simultaneously search, copy and seize information from an infinite number of unknown electronic devices in multiple districts anywhere in the country. The unlimited jurisdiction provision is triggered when a device's location is obscured through "technological means," or if agents are investigating computer crimes in five or more districts- regardless of whether …

Justice Scalia’S Originalism And Formalism: The Rule Of Criminal Law As A Law Of Rules, Stephanos Bibas

All Faculty Scholarship

Far too many reporters and pundits collapse law into politics, assuming that the left–right divide between Democratic and Republican appointees neatly explains politically liberal versus politically conservative outcomes at the Supreme Court. The late Justice Antonin Scalia defied such caricatures. His consistent judicial philosophy made him the leading exponent of originalism, textualism, and formalism in American law, and over the course of his three decades on the Court, he changed the terms of judicial debate. Now, as a result, supporters and critics alike start with the plain meaning of the statutory or constitutional text rather than loose appeals to legislative …

Anthony Amsterdam's Perspectives On The Fourth Amendment, And What It Teaches About The Good And Bad In Rodriguez V. United States, Tracey Maclin

Faculty Scholarship

Anthony Amsterdam’s article, Perspectives On The Fourth Amendment is one of the best, if not the best, law review article written on the Fourth Amendment. Thus, Minnesota Law Review on its hundredth anniversary fittingly recognizes and honors Professor Amsterdam’s article in its Symposium edition, “Standing on the Shoulders of Giants: Celebrating 100 Volumes of the Minnesota Law Review.” I am flattered that the Law Review invited me to participate in this Symposium.

Specifically, my article connects two perspectives from Amsterdam’s article — the Fourth Amendment’s concern with discretionary police power and the Framers’ vision of the Fourth Amendment to bar …

Whither Reasonable Suspicion: The Supreme Court's Functional Abandonment Of The Reasonableness Requirement For Fourth Amendment Seizures, Steven P. Grossman

All Faculty Scholarship

Although the United States Supreme Court’s approach to issues governing application of the probable cause requirement of the Fourth Amendment has mutated over the years, at least one aspect of its approach has remained constant. Before information leading to probable cause or its lesser iteration of reasonable suspicion is found to exist, the government must demonstrate in some meaningful way the reliability of the person providing the information or of the information itself. Lacking such reliability, no search or seizure based on probable cause or reasonable suspicion is permitted. In its recent decision in Navarette v. California, the Court largely …

Riley V. California And The Beginning Of The End For The Third-Party Search Doctrine, David A. Harris

Articles

In Riley v. California, the Supreme Court decided that when police officers seize a smart phone, they may not search through its contents -- the data found by looking into the call records, calendars, pictures and so forth in the phone -- without a warrant. In the course of the decision, the Court said that the rule applied not just to data that was physically stored on the device, but also to data stored "in the cloud" -- in remote sites -- but accessed through the device. This piece of the decision may, at last, allow a re-examination of …

Anthony Amsterdam's Perspectives On The Fourth Amendment, And What It Teaches About The Good And Bad In Rodriguez V. United States, Tracey Maclin

UF Law Faculty Publications

Anthony Amsterdam’s article, Perspectives On The Fourth Amendment is one of the best, if not the best, law review article written on the Fourth Amendment. Thus, Minnesota Law Review on its hundredth anniversary fittingly recognizes and honors Professor Amsterdam’s article in its Symposium edition, “Standing on the Shoulders of Giants: Celebrating 100 Volumes of the Minnesota Law Review.” I am flattered that the Law Review invited me to participate in this Symposium. Specifically, my article connects two perspectives from Amsterdam’s article — the Fourth Amendment’s concern with discretionary police power and the Framers’ vision of the Fourth Amendment to bar …

Keeping Pace: The U.S. Supreme Court And Evolving Technology, Brian Thomas

Politics Summer Fellows

Contemporary mainstream discussions of the Supreme Court are often qualified with the warning that the nine justices are out of touch with everyday American life, especially when it comes to the newest and most popular technologies. For instance, during oral argument for City of Ontario v. Quon, a 2010 case that dealt with sexting on government-issued devices, Chief Justice John Roberts famously asked what the difference was “between email and a pager,” and Justice Antonin Scalia wondered if the “spicy little conversations” held via text message could be printed and distributed. While these comments have garnered a great deal of …

From Fugitives To Ferguson: Repairing Historical And Structural Defects In Legally Sanctioned Use Of Deadly Force, José F. Anderson

All Faculty Scholarship

The lawful use of lethal force to subdue suspected wrongdoers has a long tradition in our nation. There is certainly nothing wrong with securing, incapacitating, or even killing violent persons who pose a serious threat to the lives of innocent individuals. One of the important roles of government is to protect people from harm and keep the peace. Recent events in Ferguson, Missouri, have highlighted the tension between the officers on the beat and citizens on the street. These tensions are not likely to subside unless there are major structural changes in the way the police do their job and …

Justice Scalia's Fourth Amendment: Text, Context, Clarity, And Occasional Faint-Hearted Originalism, Timothy C. Macdonnell

Scholarly Articles

Since joining the United States Supreme Court in 1986, Justice Scalia has been a prominent voice on the Fourth Amendment, having written twenty majority opinions, twelve concurrences, and six dissents on the topic. Under his pen, the Court has altered its test for determining when the Fourth Amendment should apply; provided a vision to address technology's encroachment on privacy; and articulated the standard for determining whether government officials are entitled to qualified immunity in civil suits involving alleged Fourth Amendment violations. In most of Justice Scalia's opinions, he has championed an originalist/textualist theory of constitutional interpretation. Based on that theory, …

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

Journal Articles

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.

The Law And Economics Of Stop-And-Frisk, David S. Abrams

All Faculty Scholarship

The relevant economic and legal research relating to police use of stop-and-frisk has largely been distinct. There is much to be gained by taking an interdisciplinary approach. This Essay emphasizes some of the challenges faced by those seeking to evaluate the efficacy and legality of stop-and-frisk, and suggests some ways forward and areas of exploration for future research.

On The 'Considered Analysis' Of Collecting Dna Before Conviction, David H. Kaye

Journal Articles

For nearly a decade, DNA-on-arrest laws eluded scrutiny in the courts. For another five years, they withstood a gathering storm of constitutional challenges. In Maryland v. King, however, Maryland's highest court reasoned that usually fingerprints provide everything police need to establish the true identity of an individual before trial and that the state's interest in finding the perpetrators of crimes by trawling databases of DNA profiles is too "generalized" to support "a warrantless, suspicionless search." The U.S. Supreme Court reacted forcefully. Chief Justice Roberts stayed the Maryland judgment, writing that "given the considered analysis of courts on the other side …

The Dog Days Fourth Amendment Jurisprudence, Kit Kinports

Journal Articles

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 …

Passing The Sniff Test: Police Dogs As Surveillance Technology, Irus Braverman

Journal Articles

In October 2012, the Supreme Court of the United States will review the case of Florida v. Jardines, which revolves around the constitutionality of police canine Franky’s sniff outside a private residence. Essentially, the Court will need to decide whether or not the sniff constitutes a “search” for Fourth Amendment purposes. This Article presents a review of the often-contradictory case law that exists on this question to suggest that underlying the various cases is the Courts’ assumption of a juxtaposed relationship between nature and technology. Where dog sniffs are perceived as a technology, the courts have been inclined to also …

Maryland V. King: Terry V. Ohio Redux, Tracey Maclin

Faculty Scholarship

In Maryland v. King, the Supreme Court addressed whether forensic testing of DNA samples taken from persons arrested for violent felonies violated the Fourth Amendment. The purpose behind DNA testing laws is obvious: collecting and analyzing DNA samples advances the capacity of law enforcement to solve both "cold cases" and future crimes when the government has evidence of the perpetrator's DNA from the crime scene.

In a 5-4 decision, the Court, in an opinion by Justice Kennedy, upheld Maryland's DNA testing statute, and presumably the similar laws of twenty-seven other states and the federal government.

Although Justice Kennedy's opinion suggests …

Random, Suspicionless Searches Of Students' Belongings: A Legal, Empirical, And Normative Analysis, Jason P. Nance

UF Law Faculty Publications

This Article provides a legal, empirical, and normative analysis of an intrusive search practice used by schools officials to prevent school crime: random, suspicionless searches of students’ belongings. First, it argues that these searches are not permitted under the Fourth Amendment unless schools have particularized evidence of a weapons or substance problem in their schools. Second, it provides normative considerations against implementing strict security measures in schools, especially when they are applied disproportionately on minority students. Third, drawing on recent restricted data from the U.S. Department of Education’s School Survey on Crime and Safety, it provides empirical findings that raise …

Students, Security, And Race, Jason P. Nance

UF Law Faculty Publications

In the wake of the terrible shootings in Newtown, Connecticut, our nation has turned its attention to school security. For example, several states have passed or are considering passing legislation that will provide new funding to schools for security equipment and law enforcement officers. Strict security measures in schools are certainly not new. In response to prior acts of school violence, many public schools for years have relied on metal detectors, random sweeps, locked gates, surveillance cameras, and law enforcement officers to promote school safety. Before policymakers and school officials invest more money in strict security measures, this Article provides …

Maryland V. King: Terry V. Ohio Redux, Tracey Maclin

UF Law Faculty Publications

In Maryland v. King, the Supreme Court addressed whether forensic testing of DNA samples taken from persons arrested for violent felonies violated the Fourth Amendment. The purpose behind DNA testing laws is obvious: collecting and analyzing DNA samples advances the capacity of law enforcement to solve both "cold cases" and future crimes when the government has evidence of the perpetrator's DNA from the crime scene. In a 5-4 decision, the Court, in an opinion by Justice Kennedy, upheld Maryland's DNA testing statute, and presumably the similar laws of twenty-seven other states and the federal government. Although Justice Kennedy's opinion suggests …

What Is The Essential Fourth Amendment?, Christopher Slobogin

Vanderbilt Law School Faculty Publications

In More Essential Than Ever: The Fourth Amendment in the Twenty-First Century, Stephen Schulhofer provides a strong, popularized brief for interpreting the Fourth Amendment as a command that judicial review precede all non-exigent police investigative actions that are more than minimally intrusive. This review points out a few places where Schulhofer may push the envelope too far or not far enough, but concludes that More Essential Than Ever is a welcome reminder for scholars and the public at large that the Fourth Amendment is a fundamental bulwark of constitutional jurisprudence and deserves more respect than the Supreme Court has given …

Beyond Law Enforcement: Camreta V. Greene, Child Protection Investigations, And The Need To Reform The Fourth Amendment Special Needs Doctrine, Joshua Gupta-Kagan

Faculty Scholarship

The Fourth Amendment “special needs” doctrine distinguishes between searches and seizures that serve the “normal need for law enforcement” and those that serve some other special need, excusing non-law-enforcement searches and seizures from the warrant and probable cause requirements. The United States Supreme Court has never justified drawing this bright line exclusively around law enforcement searches and seizures but not around those that threaten important noncriminal constitutional rights.

Child protection investigations illustrate the problem: millions of times each year, state child protection authorities search families' homes and seize children for interviews about alleged maltreatment. Only a minority of these investigations …

Unraveling The Exclusionary Rule: From Leon To Herring To Robinson - And Back?, David H. Kaye

Journal Articles

The Fourth Amendment exclusionary rule began to unravel in United States v. Leon. The facts were compelling. Why exclude reliable physical evidence from trial when it was not the constable who blundered, but “a detached and neutral magistrate” who misjudged whether probable cause was present and issued a search warrant? Later cases applied the exception for “good faith” mistakes to a police officer who, pursuing a grudge against a suspect, arrested and searched him and his truck on the basis of a false and negligent report from a clerk in another county of an outstand­ing arrest warrant. The California Supreme …

Dna Database Trawls And The Definition Of A Search In Boroian V. Mueller, David H. Kaye

Journal Articles

As a general matter, once the government acquires information from a permissible search or seizure, it can use this information in later criminal investigations. Courts have applied this simple rule to uphold the indefinite reuse of DNA samples acquired from convicted offenders. This essay describes the First Circuit Court of Appeals’ reliance on the rule in rejecting a convicted offender’s claim that his DNA sample and profile had to be removed from the federal DNA databank after he completed his sentence. Acknowledging that the rule permitting reuse should not be applied mechanically, I argue that the rule's application to DNA …