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University of Michigan Law School

Michigan Law Review

Fourth Amendment

Probable cause

Articles 1 - 12 of 12

Full-Text Articles in Law

Forensic Border Searches After Carpenter Require Probable Cause And A Warrant, Christopher I. Pryby Jan 2019

Forensic Border Searches After Carpenter Require Probable Cause And A Warrant, Christopher I. Pryby

Michigan Law Review

Under the border search doctrine, courts have upheld the federal government's practice of searching people and their possessions upon entry into or exit from the United States, without any requirement of suspicion, as reasonable under the Fourth Amendment. Since the advent of electronic devices with large storage capacities, courts have grappled with whether this definition of reasonableness continues to apply. So far, courts have consistently characterized “nonforensic” border inspections of electronic devices (for example, paging through photos on a phone) as “routine” searches that, like inspecting luggage brought across international lines, require no suspicion. But there is a circuit split …


Why Arrest?, Rachel A. Harmon Dec 2016

Why Arrest?, Rachel A. Harmon

Michigan Law Review

Arrests are the paradigmatic police activity. Though the practice of arrests in the United States, especially arrests involving minority suspects, is under attack, even critics widely assume the power to arrest is essential to policing. As a result, neither commentators nor scholars have asked why police need to make arrests. This Article takes up that question, and it argues that the power to arrest and the use of that power should be curtailed. The twelve million arrests police conduct each year are harmful not only to the individual arrested but also to their families and communities and to society as …


Search Incident To Probable Cause?: The Intersection Of Rawlings And Knowles, Marissa Perry Jan 2016

Search Incident To Probable Cause?: The Intersection Of Rawlings And Knowles, Marissa Perry

Michigan Law Review

The search incident to arrest exception authorizes an officer to search an arrestee’s person and his or her area of immediate control. This exception is based on two historical justifications: officer safety and evidence preservation. While much of search incident to arrest doctrine is settled, tension exists between two Supreme Court cases, Rawlings v. Kentucky and Knowles v. Iowa, and a crucial question remains unanswered: Must an officer decide to make an arrest prior to commencing a search? In Rawlings, the Supreme Court stated that a search may precede a formal arrest if the arrest follows quickly thereafter. In Knowles, …


Hassle, Jane Bambauer Feb 2015

Hassle, Jane Bambauer

Michigan Law Review

Before police perform a search or seizure, they typically must meet the probable cause or reasonable suspicion standard. Moreover, even if they meet the appropriate standard, their evidence must be individualized to the suspect and cannot rely on purely probabilistic inferences. Scholars and courts have long defended the distinction between individualized and purely probabilistic evidence, but existing theories of individualization fail to articulate principles that are descriptively accurate or normatively desirable. They overlook the only benefit that the individualization requirement can offer: reducing hassle. Hassle measures the chance that an innocent person will experience a search or seizure. Because some …


Do We Need A New Fourth Amendment?, Orin S. Kerr Apr 2009

Do We Need A New Fourth Amendment?, Orin S. Kerr

Michigan Law Review

Slobogin's book offers a new conceptualization of the Fourth Amendment rooted in what he calls the proportionality principle: An investigative technique should be permitted under the Constitution only if the strength of the government's justification for the technique is roughly proportionate to the level of intrusion it causes . Slobogin roots this principle in Terry v. Ohio and its pragmatic balancing of law-enforcement and privacy interests. To determine how much justification the Fourth Amendment requires, Slobogin argues, courts should assess the intrusiveness of the investigatory technique and then set a proportionate threshold of proof that the government must show. The …


Declining To State A Name In Consideration Of The Fifth Amendment's Self-Incrimination Clause And Law Enforcement Databases After Hiibel, Joseph R. Ashby Feb 2006

Declining To State A Name In Consideration Of The Fifth Amendment's Self-Incrimination Clause And Law Enforcement Databases After Hiibel, Joseph R. Ashby

Michigan Law Review

In response to a report of an argument on a public sidewalk, a police officer approaches two people standing in the vicinity of the reported dispute. The officer requests that each person provide her name so the officer can run the names through databases to which the police department subscribes. After searching each name through various databases, the officer might discover that one of the individuals made several purchases of cold medicine containing pseudoephedrine and that the other just received a license from the State to procure certain hazardous chemicals. These two people might be in the early stages of …


The "Routine Traffic Stop" From Start To Finish: Too Much "Routine," Not Enough Fourth Amendment, Wayne R. Lafave Jan 2004

The "Routine Traffic Stop" From Start To Finish: Too Much "Routine," Not Enough Fourth Amendment, Wayne R. Lafave

Michigan Law Review

Yale Kamisar, about which I have said too much elsewhere in this issue of the Review, could rightly be called "Mr. Confessions," for he has not only authored books and a host of articles on the subject of police interrogation, but for years has been printing Miranda cards in his basement and selling them to police departments all across the nation. Moreover, he may be the only law professor in the country who has both personally coerced a confession and had a confession coerced out of him. As Kamisar has himself noted, my own "intellectual sandbox" has been the …


We Can Do This The Easy Way Or The Hard Way: The Use Of Deceit To Induce Consent Searches, Rebecca Strauss Feb 2002

We Can Do This The Easy Way Or The Hard Way: The Use Of Deceit To Induce Consent Searches, Rebecca Strauss

Michigan Law Review

In October of 1995, Aaron Salvo was studying and living at Ashland College. College officials informed local FBI agents that they suspected Salvo of possible child molestation and related conduct based on incriminating electronic mail. FBI agents approached Salvo at his dormitory, asked to speak with him in private about the suspicious mail, and suggested they speak in Salvo's dorm room. Salvo agreed to speak with the officers, but declined to do so in his room because his roommate was there, and he did not want to get anyone else involved in the embarrassing nature of the upcoming conversation. Salvo …


Recovering The Original Fourth Amendment, Thomas Y. Davies Dec 1999

Recovering The Original Fourth Amendment, Thomas Y. Davies

Michigan Law Review

Claims regarding the original or intended meaning of constitutional texts are commonplace in constitutional argument and analysis. All such claims are subject to an implicit validity criterion - only historically authentic assertions should matter. The rub is that the original meaning commonly attributed to a constitutional text may not be authentic. The historical Fourth Amendment is a case in point. If American judges, lawyers, or law teachers were asked what the Framers intended when they adopted the Fourth Amendment, they would likely answer that the Framers intended that all searches and seizures conducted by government officers must be reasonable given …


Betts V. Brady Twenty Years Later: The Right To Counself And Due Process Values, Yale Kamisar Dec 1962

Betts V. Brady Twenty Years Later: The Right To Counself And Due Process Values, Yale Kamisar

Michigan Law Review

I am quite distressed by talk that the landmark case of Mapp v. Ohio "suggests by analogy" that the Court may now overrule Betts v. Brady. For whether one talks about the fourth or the sixth amendment, there is much to be said for Justice Harlan's dissenting views in Mapp. "[W]hatever configurations ... have been developed in the particularizing federal precedents" should not be "deemed a part of 'ordered liberty,' and as such ... enforceable against the States .... [W]e would not be true to the Fourteenth Amendment were we merely to stretch the general principle [ of …


Constitutional Law- Search And Seizure- Search Incidental To An Administrative Arrest, James J. White Dec 1960

Constitutional Law- Search And Seizure- Search Incidental To An Administrative Arrest, James J. White

Michigan Law Review

As a preliminary to deportation proceedings, defendant, Rudolf I. Abel, was arrested in his hotel room by Immigration and Naturalization Service agents who acted pursuant to a valid administrative arrest warrant. After the arrest, but without a search warrant, the INS searched Abel's room and seized evidence later used in his trial for espionage. In the district court Abel moved to suppress this evidence on the theory that the search violated the fourth amendment. The district court's denial of the motion was affirmed by the Court of Appeals for the Second Circuit. On certiorari to the United States Supreme Court, …


Search And Seizure - Suppression Of Evidence - Judicial Attitude Toward Enforcement, John B. Waite May 1960

Search And Seizure - Suppression Of Evidence - Judicial Attitude Toward Enforcement, John B. Waite

Michigan Law Review

The "numbers game" is today the most profitable of the wide-spread gambling rackets. And like all organized gambling it is a focal source and the financial support of far more serious crimes. At the same time it is one of the most difficult forms of crime for the police to control. It needs no costly installations which the police can confiscate or destroy. Unlike "house" gambling it cannot practically be harassed out of business. It can be operated by one man alone, if he survives failure to pay off for lack of capital; or by a syndicate with capital enough …