By Nancy Gertner and Jack Corrigan | The Boston Globe | April 27, 2016

The Globe reported Sunday that Boston Mayor Martin J. Walsh wouldn’t say whether he had been a grand jury witness in a federal investigation into the tactics of Boston Building Trades unions. Since then, many have chided him for not being more forthright. But that misses a critical point: Grand jury proceedings are supposed to be secret. Government agents are bound by strict confidentiality rules. They may not disclose who has been called, when they testified, or what the subject was; they are barred from releasing information about wiretaps or other evidence they have assembled. While witnesses may speak about their testimony, they do receive a letter from the government with their subpoena that strongly urges them not to do so to protect the integrity of the grand jury investigative process. And that “suggestion” is particularly important in this probe and one that Walsh was right to heed. Continue reading »