United States v. Glynn

578 F. Supp. 2d 567 (2008)

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United States v. Glynn

United States District Court for the Southern District of New York
578 F. Supp. 2d 567 (2008)

SC

Facts

Chaz Glynn (defendant) was charged with murder. At trial, the prosecution (plaintiff) called Detective James Valenti, a ballistics expert. Valenti testified “to a reasonable degree of ballistic certainty” that a bullet and casings involved in the crimes came from Glynn’s gun. Glynn challenged this testimony, arguing that the methodology in the field of ballistics was not sufficiently reliable under Federal Rule of Evidence 702. The district court held a Daubert hearing and ruled that Valenti was prohibited from tying a specific degree of certainty to his opinion testimony. The court ruled, however, that Valenti could opine that it was more likely than not that the bullet and casings came from Glynn’s gun. The jury announced a deadlock, and the district court declared a mistrial. The district court then issued this order announcing that the evidentiary rulings in the retrial would be largely the same as they were in the initial trial. The court set forth its reasoning for limiting Valenti’s ballistics testimony.

Rule of Law

Issue

Holding and Reasoning (Rakoff, J.)

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