Benton appeals from his conviction for distributing cocaine on the ground that the government failed to disclose at trial that a police witness, Detective Johnny St. Valentine Brown, who testified as an expert on the chain of custody of recovered drugs, had falsified his credentials as an expert in other criminal trials. We rejected a claim of prejudice resulting from Brown’s perjury as to his qualifications in
Whitley v. United States,
The parties agree that Brown’s falsification of his credentials on other occasions (no claim is made that he lied about his qualifications in this case) was potential impeaching evidence and thus favorable to the defense. Assuming further, as we do, that his prior acts of perjury were evidence “suppressed by the State,”
Strickler,
Brown’s expert testimony related to none of these facts except to the nature of the substance Benton sold, and then only in a limited way: he testified to the procedures by which the police generally maintain custody of drugs from initial recovery until analysis by a Drug Enforcement Administration (DEA) chemist. Even so his testimony had limited importance. Officer Xanten, who witnessed the sale, had previously described how he field-tested the purchased drugs (yielding a positive result for cocaine); then placed them in a plastic heatseal envelope along with the DEA-7 form identifying the substance, the purchase price, the date purchased, and the case and buy number; and deposited the heatseal envelope in the police-district narcotics lock box, which was guarded around the clock and could be opened only by narcotics branch officers. Brown’s ensuing testimony covered the remaining few steps in the chain of custody — the retrieval of the drugs by a “major narcotics branch” carrier who checked them for evidence of
“[W]hen [an] item has been in the possession of government officials charged with its keeping, the court may assume, absent evidence of tampering, that the officials properly discharged their duties.”
Ford v. United States,
Affirmed.
Notes
. As we recounted in
Whitley,
following years of testimony by Brown as a police expert on narcotics practices, it was discovered in 1999 that he had regularly lied under oath about his academic credentials, falsely claiming that he had a degree in pharmacology and was a board-certified pharmacist. Ultimately Brown pled guilty in federal court to multiple counts of perjury in this regard.
See Whitley,
. The government disputes this proposition, arguing that "personal information about a police officer [here Brown’s false academic credentials], known only to that officer, and unrelated to the investigation of the case or the issues at trial, should [not] be imputed to the government” for
Brady
purposes (Brief for Appellee at 35). Although we need not resolve the point to decide this case, the government’s thesis is problematical beginning with its
limitations
— e.g., its premise that the detective’s (Brown’s) perjury must be "unrelated to the ... issues at trial.” Since Brown testified as a government witness, his credibility was an "issue[] at trial,” and past instances of his lying under oath would have been relevant thereto. The government's assertion that Brown was an ancillary witness who took no part in investigating the crime seems to us properly an argument that his testimony was not material in the
Brady
(outcome-determinative) sense, rather than a claim that his prior perjury fell outside the prosecutor’s "duty to learn of [and disclose] any favorable evidence known to the others acting on the government's behalf in the case, including the police.”
Kyles,
. We reach that conclusion regardless of whether the proper standard of appellate review under
Brady
gives deference to the trial court’s decision (i.e., asking whether its decision on materiality "was reasonable,”)
McCoy v. United States,
. Appellant argues that the trial judge herself implicitly recognized the importance of Brown’s testimony when she threatened to dismiss the prosecution after the expert (not Brown) originally scheduled to testify on chain of custody had not appeared. However, Brown did appear and testify, and so the issue is not what the judge might have done (rightly or wrongly) had no expert supplemented Officer Xanten’s testimony on chain of custody; rather it is what effect — as a matter of reasonable probability — the undisclosed impeachment evidence could have had on the jury’s verdict, to which our answer is “none.”
