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Criminal Law

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DNA evidence

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The Genealogy Detectives: A Constitutional Analysis Of 'Familial Searching', David H. Kaye Jan 2013

The Genealogy Detectives: A Constitutional Analysis Of 'Familial Searching', David H. Kaye

Journal Articles

“Familial searching” in law enforcement DNA databases has been pilloried as a step “towards eugenics and corruption of blood” and “lifelong genetic surveillance” that is “inconsistent with a basic pillar of American political thought.” Courts have yet to address the issue fully, but several commentators contend that the practice is unwise, unjust, or unconstitutional. This Article examines the more significant constitutional claims. It concludes that although kinship matching should not be implemented simply because it is technologically seductive, neither should it be removed from the realm of permissible law enforcement information gathering on constitutional grounds. In reaching this conclusion, the …


Chimeric Criminals, David H. Kaye Jan 2012

Chimeric Criminals, David H. Kaye

Journal Articles

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 …


Drawing Lines: Unrelated Probable Cause As A Prerequisite To Early Dna Collection, David H. Kaye Jan 2012

Drawing Lines: Unrelated Probable Cause As A Prerequisite To Early Dna Collection, David H. Kaye

Journal Articles

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 …


Trawling Dna Databases For Partial Matches: What Is The Fbi Afraid Of?, David H. Kaye Jan 2009

Trawling Dna Databases For Partial Matches: What Is The Fbi Afraid Of?, David H. Kaye

Journal Articles

DNA evidence is often presented as the “gold standard” for forensic science. But this was not always the case. For years, eminent scientists complained that the estimates of the tiny frequencies of DNA types were unfounded. It took scores of research papers, dozens of judicial opinions, and two committees of the National Academy of Sciences to resolve the dispute by the mid-1990s. Since 2000, however, reports have surfaced of shocking numbers of “partial matches” among samples within large DNA databases, and some scientists have complained that the infinitesimal figures used in court to estimate the probability of a random match …