Federal Prosecutors Could Drop Case Against Walsh Aides

Federal prosecutors this week said that they may have to dismiss the case against two aides to Boston Mayor Marty Walsh.

The prosecutors say if the judge in the case does not re-consider his proposed jury instructions, the case will be on a "collision course with dismissal."

Nancy Gertner, former Massachusetts federal judge, senior lecturer on law at Harvard Law School and WBUR legal analyst. She tweets @ngertner.