A journalist is being compelled to reveal a confi dential source of information, but the source would be useful to the government in a criminal investigation, or helpful to a criminal defendant at...

A journalist is being compelled to reveal a confi dential source of information, but the source would be useful to the government in a criminal investigation, or helpful to a criminal defendant at trial. What constitutional issues are involved? Should the government be able to obtain a search warrant to look into fi les, audit tapes, or view fi lms that are in the possession of the news media to fi nd evidence of crime?