Counsel for the Bridgegate investigative committee told a state judge on Monday that it has no statutory power to grant immunity to witnesses Bridget Kelly or Bill Stepien if they should comply with its subpoenas for documents.

But that issue is moot until and unless Superior Court Judge Mary Jacobson rules their assertions of the Fifth Amendment privilege against self-incrimination is valid, lawyers for the N.J. Legislative Select Committee on Investigation said in a brief.