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Articles 1 - 15 of 15
Full-Text Articles in Law
On The 'Considered Analysis' Of Collecting Dna Before Conviction, David H. Kaye
On The 'Considered Analysis' Of Collecting Dna Before Conviction, David H. Kaye
David Kaye
For nearly a decade, DNA-on-arrest laws eluded scrutiny in the courts. For another five years, they withstood a gathering storm of constitutional challenges. In Maryland v. King, however, Maryland's highest court reasoned that usually fingerprints provide everything police need to establish the true identity of an individual before trial and that the state's interest in finding the perpetrators of crimes by trawling databases of DNA profiles is too "generalized" to support "a warrantless, suspicionless search." The U.S. Supreme Court reacted forcefully. Chief Justice Roberts stayed the Maryland judgment, writing that "given the considered analysis of courts on the other side …
Please, Let's Bury The Junk: The Codis Loci And The Revelation Of Private Information, David H. Kaye
Please, Let's Bury The Junk: The Codis Loci And The Revelation Of Private Information, David H. Kaye
David Kaye
This Northwestern University Law Review Colloquy paper describes the four possible ways in which genetic loci could possess predictive or diagnostic value with regard to diseases and explains why these mechanisms have not led, and probably cannot lead, to useful screening tests with the Convicted Offender DNA Index System (CODIS) profiles in national, state, and local databases. It then considers the phenotypes and familial relationships that the CODIS STRs can be used to identify. The profiles carry limited information about an individual's race and familial relationships, and the article places the resulting privacy issues in perspective. Finally, the paper comments …
Probability, Individualization, And Uniqueness In Forensic Science Evidence: Listening To The Academies, David H. Kaye
Probability, Individualization, And Uniqueness In Forensic Science Evidence: Listening To The Academies, David H. Kaye
David Kaye
Day in and day out, criminalists testify to positive, uniquely specific identifications of fingerprints, bullets, handwriting, and other trace evidence. A committee of the National Academy of Sciences, building on the writing of academic commentators, has called for sweeping changes in the presentation and production of evidence of identification. These include some form of circumscribed and standardized testimony. But the Academy report is short on the specifics of the testimony that would be legally and professionally allowable. This essay outlines possible types of testimony that might harmonize the testimony of criminalists with the actual state of forensic science. It does …
Maryland V. King: Per Se Unreasonableness, The Golden Rule, And The Future Of Dna Databases, David H. Kaye
Maryland V. King: Per Se Unreasonableness, The Golden Rule, And The Future Of Dna Databases, David H. Kaye
David Kaye
In Maryland v. King, the Supreme Court applied a balancing test to uphold a Maryland statute mandating preconviction collection and analysis of DNA from individuals charged with certain crimes. The DNA profiles are limited to an inherited set of DNA sequences that are not known to be functional and that are tokens of individual identity. This invited online essay examines two aspects of an article on the case by Professor Erin Murphy. I question the claim that the case is pivotal in a conceivable abandonment of the per se rule that warrantless, suspicionless searches are unconstitutional unless they fall …
Identification, Individualization, Uniqueness, David H. Kaye
Identification, Individualization, Uniqueness, David H. Kaye
David Kaye
Criminalists and many forensic scientists concerned with the identification of trace evidence have distinguished between identification and individualization, but they have not distinguished as precisely between individualization and uniqueness. This paper clarifies these terms and discusses the relationships among identification, individualization, and uniqueness in forensic-science evidence.
Drawing Lines: Unrelated Probable Cause As A Prerequisite To Early Dna Collection, David H. Kaye
Drawing Lines: Unrelated Probable Cause As A Prerequisite To Early Dna Collection, David H. Kaye
David Kaye
Swabbing the inside of a cheek has become part of the custodial arrest process in many jurisdictions. The majority view (thus far) is that routinely collecting DNA before conviction (and analyzing it, recording the results, and comparing them to DNA profiles from crime-scene databases) is consistent with Fourth Amendment protections against unreasonable searches and seizures. However, some judges and commentators have argued that DNA sampling in advance of a determination by a judge or grand jury of probable cause for the arrest or charge is unconstitutional. This essay shows that this demand is largely unfounded. Either warrantless, suspicionless DNA collection …
Do We Need A Calculus Of Weight To Understand Proof Beyond A Reasonable Doubt?, David H. Kaye
Do We Need A Calculus Of Weight To Understand Proof Beyond A Reasonable Doubt?, David H. Kaye
David Kaye
The commentary on a paper by L.J. Cohen, prepared for a symposium on probability and inference in the law of evidence, shows that the legal requirement of proof beyond a reasonable doubt can be understood simply as demanding a sufficiently high probability that the prosecution's narrative or story of the facts, which captures all the elements of the offense, is true. No separate measure of the "weight" of the totality of the evidence is required to understand the burden of persuasion. Any incompleteness in the evidence can be accounted for by a conditional probability that includes the presence of any …
Case Comment - People V. Nelson: A Tale Of Two Statistics, David H. Kaye
Case Comment - People V. Nelson: A Tale Of Two Statistics, David H. Kaye
David Kaye
In recent years, defendants who were identified as a result of a search through a database of DNA profiles have argued that the probability that a randomly selected person would match a crime-scene stain overstates the probative value of the match. The statistical literature is divided, with most statisticians who have written on the subject rejecting this claim. In People v. Nelson, the Supreme Court of California held that when the random-match probability is so small as to make it exceedingly unlikely that any unrelated individual has the incriminating DNA profile, this statistic is admissible in a database-search case. …
Dna Evidence: Probability, Population Genetics, And The Courts, David H. Kaye
Dna Evidence: Probability, Population Genetics, And The Courts, David H. Kaye
David Kaye
To help meet the challenge of presenting properly performed DNA tests within the post-Daubert legal framework, this article outlines the statistical procedures that have been employed or proposed to provide judges and juries with quantitative measures of probative value, describes more fully how the courts have dealt with these procedures, and evaluates the opinions and the statistical analyses from the standpoint of the law of evidence.
Specifically, the article outlines the procedure used to declare whether two samples of DNA "match," and how shrinking the size of the "match window," as some defendants have urged, will decrease the risk of …
Behavioral Genetics Research And Criminal Dna Databanks, David H. Kaye
Behavioral Genetics Research And Criminal Dna Databanks, David H. Kaye
David Kaye
This article examines the current concerns about whether DNA databases may be used for actions other than to apprehend criminals, such as genetic research, in particular, searching for a "crime gene". Part II considers the perspective that these databases may be useful for research. The information within a DNA sample consists of a limited number of DNA base-pair variations, which are important to identification, but not necessarily to genetic research. However, while it may be difficult to conduct genetic research, it is not impossible. Part III examines state and federal database legislation. There are examples of three states' statutes and …
A Fourth Amendment Theory For Arrestee Dna And Other Biometric Databases, David H. Kaye
A Fourth Amendment Theory For Arrestee Dna And Other Biometric Databases, David H. Kaye
David Kaye
Routine DNA sampling following a custodial arrest process is now the norm in many jurisdictions, but is it consistent with the Fourth Amendment? The few courts that have addressed the question have disagreed on the answer, but all of them seem to agree on two points: (1) the reasonableness of the practice turns on a direct form of balancing of individual and governmental interests; and (2) individuals who are convicted — and even those who are merely arrested — have a greatly diminished expectation of privacy in their identities. This Article disputes these propositions and offers an improved framework for …
Ultracrepidarianism In Forensic Science: The Hair Evidence Debacle, David H. Kaye
Ultracrepidarianism In Forensic Science: The Hair Evidence Debacle, David H. Kaye
David Kaye
For over 130 years, scientific sleuths have been inspecting hairs under microscopes. Late in 2012, the FBI, the Innocence Project, and the National Association of Criminal Defense Lawyers joined forces to review thousands of microscopic hair comparisons performed by FBI examiners over several of those decades. The results have been astounding. Based on the first few hundred cases in which hairs were said to match, it appears that examiners “exceeded the limits of science” in over 90% of their reports or testimony. The disclosure of this statistic has led to charges that the FBI “faked an entire field of forensic …
'False But Highly Persuasive:' How Wrong Were The Probability Estimates In Mcdaniel V. Brown?, David H. Kaye
'False But Highly Persuasive:' How Wrong Were The Probability Estimates In Mcdaniel V. Brown?, David H. Kaye
David Kaye
In McDaniel v. Brown, the Supreme Court will review the use of DNA evidence in a 1994 trial for sexual assault and attempted murder. The Court granted certiorari to consider two procedural issues - the standard of federal postconviction review of a state jury verdict for sufficiency of the evidence, and the district court's decision to allow the prisoner to supplement the record of trials, appeals, and state postconviction proceedings with a geneticist's letter twelve years after the trial.
This essay clarifies the nature and extent of the errors in the presentation of the DNA evidence in Brown. It questions …
Chimeric Criminals, David H. Kaye
Chimeric Criminals, David H. Kaye
David Kaye
According to the book Genetic Justice: DNA Databanks, Criminal Investigations, and Civil Liberties — described as “the single most comprehensive articulation of the civil-liberties concerns associated with law-enforcement DNA databases,” “a series of measured arguments,” and “a touchstone for debates about the spread of DNA profiling” — an obscure genetic condition known as chimerism “could undermine the very basis of the forensic DNA system” and force a reconsideration of “the entire project of forensic DNA.” This conclusion is as unfounded as it is unnerving. Chimerism is a consideration in, but not a real obstacle to DNA identification. This essay explains …
Dna Database Trawls And The Definition Of A Search In Boroian V. Mueller, David H. Kaye
Dna Database Trawls And The Definition Of A Search In Boroian V. Mueller, David H. Kaye
David Kaye
As a general matter, once the government acquires information from a permissible search or seizure, it can use this information in later criminal investigations. Courts have applied this simple rule to uphold the indefinite reuse of DNA samples acquired from convicted offenders. This essay describes the First Circuit Court of Appeals’ reliance on the rule in rejecting a convicted offender’s claim that his DNA sample and profile had to be removed from the federal DNA databank after he completed his sentence. Acknowledging that the rule permitting reuse should not be applied mechanically, I argue that the rule's application to DNA …