The news this week of errors with breath testing in Massachusetts has had a major impact on the prosecution of drunk driving cases and raises the potential of hundreds of wrongful convictions and or wrongful pleas that were not supported by accurate evidence. One reason this has occurred is the ease with which prosecutors can admit breath test evidence at trial. The Commonwealth can admit the results without calling any witness that knows anything about how the machine operates. At a trial, the breath test operator will typically testify that they are taught to push the button, wait for the machine to run its self checks and if the machine does not report any error, the results are fine. The officer will often admit to not understanding the science behind the machine.
The Commonwealth is not required to call any expert witness from the Office of Alcohol Testing to verify the accuracy of the results. In a case known as Commonwealth v. Zeininger, 459 Mass. 775 (2011), the Massachusetts Supreme Judicial Court said that breath test records can come into evidence without live testimony because the records are not testimonial, meaning that the Court was saying that the records do not accuse a person of a crime but report “neutral” data. The Court’s reasoning was flawed and allowed evidence to come in a trials without being properly tested through cross examination. In light of the disclosure of the problems with the machine, the SJC should reconsider its decision in the Zeininger case that is partly the cause of unreliable evidence being presented to jurors during OUI trials.
This bring us to the error that prompted many counties to hold off using breath test results, including Suffolk, Middlesex, Worcester, Essex, Northwestern, Barnstable County.