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Privacy Law

American University Washington College of Law

Fourth Amendment

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Full-Text Articles in Law

The Exclusionary Rule In The Age Of Blue Data, Andrew Ferguson Jan 2019

The Exclusionary Rule In The Age Of Blue Data, Andrew Ferguson

Articles in Law Reviews & Other Academic Journals

In Herring v. United States, Chief Justice John Roberts reframed the Supreme Court’s understanding of the exclusionary rule: “As laid out in our cases, the exclusionary rule serves to deter deliberate, reckless, or grossly negligent conduct, or in some circumstances recurring or systemic negligence.” The open question remains: how can defendants demonstrate sufficient recurring or systemic negligence to warrant exclusion? The Supreme Court has never answered the question, although the absence of systemic or recurring problems has figured prominently in two recent exclusionary rule decisions. Without the ability to document recurring failures, or patterns of police misconduct, courts can dismiss …


Carpenter V. United States: Brief Of Scholars Of Criminal Procedure And Privacy As Amici Curiae In Support Of Petitioner, Andrew Ferguson Jan 2017

Carpenter V. United States: Brief Of Scholars Of Criminal Procedure And Privacy As Amici Curiae In Support Of Petitioner, Andrew Ferguson

Articles in Law Reviews & Other Academic Journals

Amici curiae are forty-two scholars engaged in significant research and/or teaching on criminal procedure and privacy law. This brief addresses issues that are within amici’s particular areas of scholarly expertise. They have a shared interest in clarifying the law of privacy in the digital era, and believe that a review of scholarly literature on the topic is helpful to answering the question in this case. This brief is co-authored by Harry Sandick, Kathrina Szymborski, & Jared Buszin of Patterson Belknap Webb & Tyler LLP.Carpenter v. United States presents an opportunity to reconsider the Fourth Amendment in the digital age. Cell …


Big Data And Predictive Reasonable Suspicion, Andrew Ferguson Jan 2015

Big Data And Predictive Reasonable Suspicion, Andrew Ferguson

Articles in Law Reviews & Other Academic Journals

The Fourth Amendment requires “reasonable suspicion” to seize a suspect. As a general matter, the suspicion derives from information a police officer observes or knows. It is individualized to a particular person at a particular place. Most reasonable suspicion cases involve police confronting unknown suspects engaged in observable suspicious activities. Essentially, the reasonable suspicion doctrine is based on “small data” – discrete facts involving limited information and little knowledge about the suspect.But what if this small data is replaced by “big data”? What if police can “know” about the suspect through new networked information sources? Or, what if predictive analytics …


The Un-Territoriality Of Data, Jennifer Daskal Jan 2015

The Un-Territoriality Of Data, Jennifer Daskal

Articles in Law Reviews & Other Academic Journals

Territoriality looms large in our jurisprudence, particularly as it relates to the government’s authority to search and seize. Fourth Amendment rights turn on whether the search or seizure takes place territorially or extraterritorially; the government’s surveillance authorities depend on whether the target is located within the United States or without; and courts’ warrant jurisdiction extends, with limited exceptions, only to the borders’ edge. Yet the rise of electronic data challenges territoriality at its core. Territoriality, after all, depends on the ability to define the relevant “here” and “there,” and it presumes that the “here” and “there” have normative significance. The …


The 'High Crime Area' Question: Requiring Verifiable And Quantifiable Evidence For Fourth Amendment Reasonable Suspicion Analysis, Andrew Ferguson, Damien Bernache Jan 2008

The 'High Crime Area' Question: Requiring Verifiable And Quantifiable Evidence For Fourth Amendment Reasonable Suspicion Analysis, Andrew Ferguson, Damien Bernache

Articles in Law Reviews & Other Academic Journals

This article proposes a legal framework to analyze the "high crime area" concept in Fourth Amendment reasonable suspicion challenges.Under existing Supreme Court precedent, reviewing courts are allowed to consider that an area is a "high crime area" as a factor to evaluate the reasonableness of a Fourth Amendment stop. See Illinois v. Wardlow, 528 U.S. 119 (2000). However, the Supreme Court has never defined a "high crime area" and lower courts have not reached consensus on a definition. There is no agreement on what a "high-crime area" is, whether it has geographic boundaries, whether it changes over time, whether it …