It is my view that there is no "compelling need" that can be shown which qualifies the reporter's immunity from appearing or testifying before a grand jury, unless the reporter himself is implicated in a crime. His immunity, in my view, is therefore quite complete, for, absent his involvement in a crime, the First Amendment protects him against an appearance before a grand jury, and, if he is involved in a crime, the Fifth Amendment stands as a barrier. ... And since, in my view, a newsman has an absolute right not to appear before a grand jury, it follows for me that a journalist who voluntarily appears before that body may invoke his First Amendment privilege to specific questions.
