The Relationship Between Trespass and Fourth Amendment Protection After Katz v. United States

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In addition to “persons, houses, [and] papers,” the Constitution protects individuals against unreasonable searches and seizures of “effects.” However, “effects” have received considerably less attention than the rest of the categories in the Fourth Amendment. Recent Supreme Court opinions on Fourth Amendment searches reintroduced the word “effects,” and yet they did so without a definition of the word, an understanding of its history, or a clear doctrinal theory. In the absence of a coherent approach to “effects,” many lower courts apply the standard Fourth Amendment test: they ask whether the government has violated the claimant’s “reasonable expectation of privacy.” However, many lower courts protect or decline to protect personal property by examining the individual’s expectation of privacy in the property’s physical location. These courts hold that individuals have no expectations of privacy in personal property that is unattended in public space. This Article argues that personal property in public space should receive greater constitutional protection than is provided by these cases, because of the privacy and security interests inherent in ownership and possession. The history surrounding the Fourth Amendment provides evidence that the protection against unreasonable searches and seizures was connected to the law prohibiting interferences with another’s possession of personal property, including dispossession, damage, or unwanted handling. To restore this connection, this Article uses guidance from personal-property law to propose a framework for identifying Fourth Amendment interests in effects based on their qualities and environment. This intervention would grant effects the constitutional protection they deserve.

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In the 1985 case of United States v. Hensley, the Supreme Court ruled that the Fourth Amendment permits police officers to perform warrantless investigatory stops for completed felonies. However, Hensley explicitly declined to address whether the Fourth Amendment allows such stops to investigate suspicion of completed misdemeanors. Since then, courts have ruled inconsistently on this issue, creating uncertainty in this important area of search and seizure law. This Note attempts to settle this uncertainty by examining the Fourth Amendment's text, history, and jurisprudence. It argues that warrantless stops to investigate completed misdemeanors are constitutional when the underlying crime presents an ongoing danger.

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University of Arkansas at Little Rock Law Review

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Harvard Law Review

For fifty years, courts have used a “reasonable expectation of privacy” standard to define “searches” under the Fourth Amendment. As others have recognized, that doctrine is subjective, unpredictable, and conceptually confused, but viable alternatives have been slow to emerge. This Article supplies one. We argue that Fourth Amendment protection should be anchored in background positive law. The touchstone of the search-and-seizure analysis should be whether government officials have done something forbidden to private parties. It is those actions that should be subjected to Fourth Amendment reasonableness review and the presumptive requirement to obtain a warrant. In short, Fourth Amendment protection should depend on property law, privacy torts, consumer laws, eavesdropping and wiretapping legislation, anti-stalking statutes, and other provisions of law generally applicable to private actors, rather than a freestanding doctrine of privacy fashioned by courts on the fly. This approach rests on multiple grounds. It is consistent with the history of the Fourth Amendment and with the structure of protection in the closely related area of constitutional property. It draws upon fundamental principles of liberal constitutionalism, namely a concern about abuse of official power. And it is superior to current privacy-based doctrine in many practical ways: it is clearer, more predictable, more accommodating of variation in different times and places, and more sensitive to the institutional strengths of legislative bodies, particularly when it comes to issues presented by new technologies. It also has significant doctrinal implications. Of most immediate importance, it provides a framework to analyze third-party problems — situations in which information about one person is obtained from another — that is more coherent and more attractive than the modern third-party doctrine. It also provides a new framework for many other contested Fourth Amendment questions, from abandoned property and DNA to the use of drones.

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