Fourth Amendment Commons^™

Carpenter's Legacy: Limiting The Scope Of The Electronic Private Search Doctrine, Sarah A. Mezera

Michigan Law Review

One of the most significant challenges confronting courts and legal scholars in the twenty-first century is the application of Fourth Amendment doctrine to new technology. The circuit split over the application of the private search doctrine to electronic devices exemplifies how courts struggle to apply old doctrines to new circumstances. Some courts take the position that the old doctrine should apply consistently in the new context. Other courts have changed the scope of the old doctrine in order to account for the change in circumstances. The Supreme Court took the latter position in Carpenter v. United States and held that …

Secret Searches: The Sca's Standing Conundrum, Aviv S. Halpern

Michigan Law Review

The Stored Communications Act (“SCA”) arms federal law enforcement agencies with the ability to use a special type of warrant to access users’ electronically stored communications. In some circumstances, SCA warrants can require service providers to bundle and produce a user’s electronically stored communications without ever disclosing the existence of the warrant to the individual user until charges are brought. Users that are charged will ultimately receive notice of the search after the fact through their legal proceedings. Users that are never charged, however, may never know that their communications were obtained and searched. This practice effectively makes the provisions …

Back To The Future? The Use Of Biometrics, Its Impact On Airport Security, And How This Technology Should Be Governed, Eric P. Haas

Journal of Air Law and Commerce

No abstract provided.

Insidious Encroachment? Strengthening The "Crown Jewels": The 2018 Reauthorization Of Fisa Section 702, John F. Schifalacqua

American University National Security Law Brief

No abstract provided.

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

Scholarly Articles in Law Reviews & 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 …

Fourth Amendment Textualism, Jeffrey Bellin

Michigan Law Review

The Fourth Amendment’s prohibition of “unreasonable searches” is one of the most storied constitutional commands. Yet after decades of Supreme Court jurisprudence, a coherent definition of the term “search” remains surprisingly elusive. Even the justices know they have a problem. Recent opinions only halfheartedly apply the controlling “reasonable expectation of privacy” test and its wildly unpopular cousin, “third-party doctrine,” with a few justices in open revolt.

These fissures hint at the Court’s openness to a new approach. Unfortunately, no viable alternatives appear on the horizon. The justices themselves offer little in the way of a replacement. And scholars’ proposals exhibit …

Functional Equivalence And Residual Rights Post-Carpenter: Framing A Test Consistent With Precedent And Original Meaning, Laura K. Donohue

Georgetown Law Faculty Publications and Other Works

The Carpenter Court held that warrantless access to seven or more days of cell site location information (CSLI) constitutes a violation of the reasonable expectation of privacy that individuals have in the whole of their physical movements. But the grounds on which the Court drew a line characterize all sorts of digital records—including those at issue in Miller and Smith, belying the majority’s claim that the decision leaves third-party doctrine intact. Instead of avoiding Katz’s pitfalls, moreover, the Court emphasized voluntary assumption of risk, doubling down on the subjective nature of judicial determination. The decision will likely lead to …

The End Of Intuition-Based High-Crime Areas, Ben Grunwald, Jeffrey Fagan

Faculty Scholarship

In 2000, the Supreme Court held in Illinois v. Wardlow that a suspect’s presence in a “high-crime area” is relevant in determining whether an officer has reasonable suspicion to conduct an investigative stop. Despite the importance of the decision, the Court provided no guidance about what that standard means, and over fifteen years later, we still have no idea how police officers understand and apply it in practice. This Article conducts the first empirical analysis of Wardlow by examining data on over two million investigative stops conducted by the New York Police Department from 2007 to 2012.

Our results suggest …

Immigration Detainers, Local Discretion, And State Law's Historical Constraints, Kate Evans

Faculty Scholarship

No abstract provided.