Law Commons^™

Rewriting Whren V. United States, Jonathan Feingold, Devon Carbado

Faculty Scholarship

In 1996, the U.S. Supreme Court decided Whren v. United States—a unanimous opinion in which the Court effectively constitutionalized racial profiling. Despite its enduring consequences, Whren remains good law today. This Article rewrites the opinion. We do so, in part, to demonstrate how one might incorporate racial justice concerns into Fourth Amendment jurisprudence, a body of law that has long elided and marginalized the racialized dimensions of policing. A separate aim is to reveal the “false necessity” of the Whren outcome. The fact that Whren was unanimous, and that even progressive Justices signed on, might lead one to conclude that …

"Hey, Hey! Ho, Ho! These Mass Arrests Have Got To Go!": The Expressive Fourth Amendment Argument, Karen Pita Loor

Faculty Scholarship

The racial justice protests ignited by the murder of George Floyd in May 2020 constitute the largest protest movement in the United States. Estimates suggest that between fifteen and twenty-six million people protested across the country during the summer of 2020 alone. Not only were the number of protestors staggering, but so were the number of arrests. Within one week of when the video of George Floyd’s murder went viral, police arrested ten thousand people demanding justice on American streets, with police often arresting activists en masse. This Essay explores mass arrests and how they square with Fourth Amendment …

The Expressive Fourth Amendment, Karen Pita Loor

Faculty Scholarship

After the eight-minute and forty-six second video of George Floyd’s murder went viral, cities across the United States erupted in mass protests with people outraged by the death of yet another Black person at the hands of police. The streets were flooded for months with activists and community members of all races marching, screaming, and demonstrating against police brutality and for racial justice. Police—like warriors against enemy forces—confronted overwhelmingly peaceful protesters with militarized violence and force. Ultimately, racial justice protesters and members of the media brought lawsuits under section 1983 of the Civil Rights Act in the district courts of …

Tear Gas + Water Hoses + Dispersal Orders: The Fourth Amendment Endorses Brutality In Protest Policing, Karen Pita Loor

Faculty Scholarship

Thirty years ago, in Graham v. Connor, the Supreme Court determined that excessive-force claims against police should proceed via the Fourth Amendment, which theoretically protects an individual against unreasonable seizures. However, the Court showed extreme deference to law enforcement’s use of force by using a permissive reasonableness analysis that bestows on police great leeway to make quick split-second decisions in tense and rapidly evolving circumstances. The result is a test that, from its inception, has been too forgiving of police violence and misconduct. This lax reasonableness standard, along with qualified immunity principles, has shielded police from § 1983 civil rights …

Core Criminal Procedure, Steven Arrigg Koh

Faculty Scholarship

Constitutional criminal procedural rights are familiar to contemporary criminal law scholars and practitioners alike. But today, U.S. criminal justice may diverge substantially from its centuries-old framework when all three branches recognize only a core set of inviolable rights, implicitly or explicitly discarding others. This criminal procedural line drawing takes place when the U.S. criminal justice system engages in law enforcement cooperation with foreign criminal justice systems in order to advance criminal cases.

This Article describes the two forms of this criminal procedural line drawing. The first is a “core criminal procedure” approach, rooted in fundamental rights, that arises in the …

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 …

The Public Information Fallacy, Woodrow Hartzog

Faculty Scholarship

The concept of privacy in “public” information or acts is a perennial topic for debate. It has given privacy law fits. People struggle to reconcile the notion of protecting information that has been made public with traditional accounts of privacy. As a result, successfully labeling information as public often functions as a permission slip for surveillance and personal data practices. It has also given birth to a significant and persistent misconception — that public information is an established and objective concept.

In this article, I argue that the “no privacy in public” justification is misguided because nobody knows what “public” …

Byrd V United States: Unauthorized Drivers Of Rental Cars Have Fourth Amendment Rights? Not As Evident As It Seems, Tracey Maclin

Faculty Scholarship

No discerning student of the Supreme Court would contend that Justice Anthony Kennedy broadly interpreted the Fourth Amendment during his thirty years on the Court. His majority opinions in Maryland v. King, Drayton v. United States and his willingness to join the three key sections of Justice Scalia’s opinion in Hudson v. Maryland, which held that suppression is never a remedy for knock-and-announce violations, are just a few examples of Justice Kennedy’s narrow view of the Fourth Amendment.

In light of his previous votes in search and seizure cases, surprisingly Justice Kennedy, in what would be his final Fourth Amendment …

Why Courts Fail To Protect Privacy: Race, Age, Bias, And Technology, Christopher Robertson, Bernard Chao, Ian Farrell, Catherine Durso

Faculty Scholarship

The Fourth Amendment protects against unreasonable “searches and seizures,” but in the digital age of stingray devices and IP tracking, what constitutes a search or seizure? The Supreme Court has held that the threshold question is supposed to depend on and reflect the “reasonable expectations” of ordinary members of the public concerning their own privacy. For example, the police now exploit the “third party” doctrine to access data held by email and cell phone providers, without securing a warrant, on the Supreme Court’s intuition that the public has no expectation of privacy in that information. Is that assumption correct? If …

Body Cameras And The Path To Redeem Privacy Law, Woodrow Hartzog

Faculty Scholarship

From a privacy perspective, the movement towards police body cameras seems ominous. The prospect of a surveillance device capturing massive amounts of data concerning people’s most vulnerable moments is daunting. These concerns are compounded by the fact that there is little consensus and few hard rules on how and for whom these systems should be built and used. But in many ways, this blank slate is a gift. Law and policy makers are not burdened by the weight of rules and technologies created in a different time for a different purpose. These surveillance and data technologies will be modern. Many …

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 …

Government Analysis Of Shed Dna Is A Search Under The Fourth Amendment, Tracey Maclin

Faculty Scholarship

This article addresses whether the Fourth Amendment is implicated when police surreptitiously collect and analyze a person’s involuntarily shed DNA.

Law enforcement officers will often obtain shed or abandoned DNA samples from persons who they suspect have committed crimes, but lack sufficient evidence to arrest or detain such persons. When utilizing abandoned or shed DNA for criminal investigative purposes, there are two state actions which arguably trigger Fourth Amendment protection. First, the collection of the biological material which contains a person’s DNA might be considered a search under the amendment. Courts, however, have uniformly rejected this argument. For example, when …

The Right To Quantitative Privacy, Danielle K. Citron, David Gray

Faculty Scholarship

We are at the cusp of a historic shift in our conceptions of the Fourth Amendment driven by dramatic advances in surveillance technology. Governments and their private sector agents continue to invest billions of dollars in massive data-mining projects, advanced analytics, fusion centers, and aerial drones, all without serious consideration of the constitutional issues that these technologies raise. In United States v. Jones, the Supreme Court signaled an end to its silent acquiescence in this expanding surveillance state. In that case, five justices signed concurring opinions defending a revolutionary proposition: that citizens have Fourth Amendment interests in substantial quantities of …

A Shattered Looking Glass: The Pitfalls And Potential Of The Mosaic Theory Of Fourth Amendment Privacy, Danielle K. Citron, David Gray

Faculty Scholarship

On January 23, 2012, the Supreme Court issued a landmark non-decision in United States v. Jones. In that case, officers used a GPS-enabled device to track a suspect’s public movements for four weeks, amassing a considerable amount of data in the process. Although ultimately resolved on narrow grounds, five Justices joined concurring opinions in Jones expressing sympathy for some version of the “mosaic theory” of Fourth Amendment privacy. This theory holds that we maintain reasonable expectations of privacy in certain quantities of information even if we do not have such expectations in the constituent parts. This Article examines and explores …

The Fight To Frame Privacy, Woodrow Hartzog

Faculty Scholarship

The resolution of a debate often hinges on how the problem being debated is presented. In psychology and related disciplines, this method of issue presentation is known as framing. Framing theory holds that even small changes in the presentation of an issue or event can produce significant changes of opinion. Framing has become increasingly important in discussions about privacy and security. In his new book, "Nothing to Hide: The False Tradeoff Between Privacy and Security," Daniel Solove argues that if we continue to view privacy and security as diametrically opposed to each other, privacy will always lose. Solove argues that …

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 …

No More Chipping Away: The Roberts Court Uses An Axe To Take Out The Fourth Amendment Exclusionary Rule, Tracey Maclin, Jennifer Marie Rader

Faculty Scholarship

This article considers the current status of the Fourth Amendment exclusionary rule under the Roberts Court, as well as what the future holds for the rule. Despite Justice Kennedy’s 2006 declaration that “the continued operation of the exclusionary rule, as settled and defined by our precedents, is not in doubt,” this Article demonstrates why this is not the case. Kennedy’s statement is noteworthy and has been accorded substantial weight primarily because it was made at a time when it was thought that four Justices (Chief Justice Roberts, and Justices Scalia, Thomas, and Alito) were prepared to announce the demise of …

Notes On Borrowing And Convergence, Robert L. Tsai, Nelson Tebbe

Faculty Scholarship

This is a response to Jennifer E. Laurin, "Trawling for Herring: Lessons in Doctrinal Borrowing and Convergence," 111 Colum. L. Rev. 670 (2011), which analyzes the Supreme Court's resort to tort-based concepts to limit the reach of the Fourth Amendment's exclusionary rule. We press three points. First, there are differences between a general and specific critique of constitutional borrowing. Second, the idea of convergence as a distinct phenomenon from borrowing has explanatory potential and should be further explored. Third, to the extent convergence occurs, it matters whether concerns of judicial administration or political reconstruction are driving doctrinal changes.

Framing The Fourth, Tracey Maclin

Faculty Scholarship

History is again an important element of the Supreme Court’s Fourth Amendment analysis. In Wyoming v. Houghton, Justice Scalia’s opinion for the Court announced that a historical inquiry is the starting point for every Fourth Amendment case. William Cuddihy’s book on the origins and original meaning of the Fourth Amendment will undoubtedly assist the Justices (and everyone else) in understanding the history of search and seizure law.

Cuddihy’s historical analysis is unprecedented. As Justice O’Connor has described it, Cuddihy’s work is “one of the most exhaustive analyses of the original meaning of the Fourth Amendment ever undertaken.” Cuddihy reviewed thousands …

Islam’S Fourth Amendment: Search And Seizure In Islamic Doctrine And Muslim Practice, Sadiq Reza

Faculty Scholarship

Modern scholars regularly assert that Islamic law contains privacy protections similar to those of the Fourth Amendment to the U.S. Constitution. Two Quranic verses in particular - one that commands Muslims not to enter homes without permission, and one that commands them not to 'spy' - are held up, along with reports from the Traditions (Sunna) that repeat and embellish on these commands, as establishing rules that forbid warrantless searches and seizures by state actors and require the exclusion of evidence obtained in violation of these rules. This Article tests these assertions by: (1) presenting rules and doctrines Muslim jurists …

Recent Case, Ninth Circuit Considers Community's Racial Tension With Police In Finding Illegal Seizure And Lack Of Voluntary Consent. — United States V. Washington, 490 F.3d 765 (9th Cir. 2007), Portia Pedro

Faculty Scholarship

The traditional story of Fourth Amendment search and seizure doctrine involves a complex compromise between public safety and the constitutional right to personal liberty. Although the choice of viewpoint is often left out of the story, much also depends on whose perspective — police officers’ or civilians’ — a judge employs for search and seizure determinations. The chosen perspective circumscribes the types of facts that a judge considers in these evaluations. In United States v. Washington, the Ninth Circuit held that the district court should have suppressed evidence obtained through a vehicle search because the consent was not voluntary, or, …

The Good And Bad News About Consent Searches In The Supreme Court, Tracey Maclin

Faculty Scholarship

This article is about the Supreme Court's consent search doctrine. Part I describes how the law of consent searches developed between the 1920s and 1973, when Schneckloth v. Bustamonte was decided, which is the Court's seminal consent search case.

Part II of the article is a discussion of Bustamonte. In particular, this part highlights the spoken and unspoken premises that influenced the result in Bustamonte and outlines Bustamonte's continuing relevance for consent search cases today.

Part III examines United States v. Drayton, a ruling authored by Justice Kennedy that explains why a cryptic passage in that ruling provides important clues …

The Magic Lantern Revealed: A Report Of The Fbi's New Key Logging Trojan And Analysis Of Its Possible Treatment In A Dynamic Legal Landscape, Woodrow Hartzog

Faculty Scholarship

Magic Lantern presents several difficult legal questions that are left unanswered due to new or non-existent statutes and case law directly pertaining to the unique situation that Magic Lantern creates. ²⁵ The first concern is statutory. It is unclear what laws, if any, will apply when Magic Lantern is put into use.²⁶ The recent terrorist attacks in the United States have brought the need for information as a matter of national security to the forefront. Congress recently passed legislation (i.e. USA PATRIOT Act) ²⁷ that dramatically modifies current surveillance law, thus further complicating the untested waters of a …

The Burger Court And The Fourth Amendment, Larry Yackle

Faculty Scholarship

In his 1974 Holmes Lectures, Anthony Amsterdam likened the Supreme Court in search and seizure cases to a committee "attempting to draft a horse by placing very short lines on a very large drawing board at irregular intervals during which the membership of the committee constantly changes." On that perception of the matter he cautioned against precipitous criticism when the completed draft resembles a camel. That advice, in my judgment, is reliable only in part. On the one hand, only the most arrogant of armchair critics would not concede that the Court's work is as difficult as it is important. …