Why did John Roberts intervene in Mueller probe?

CBS News  |  Jan 5, 2019


Supreme Court Chief Justice John Roberts intervened in a mysterious grand jury subpoena just days before Christmas. It's supposedly linked to Robert Mueller's Russia investigation. Nelson Cunningham analyzed the subpoena in a piece for Politico Magazine. He's worked as a federal prosecutor under Rudy Giuliani and a legal aide to the Clinton administration, and he joined CBSN to discuss his findings.