(a) Unless the disclosure of the content of the information would substantially increase the likelihood that the source of the information will be discovered, the privilege provided by § 4322 of this title shall not prevent a reporter from being required in an adjudicative proceeding to testify concerning the content, but not the source, of information that the reporter obtained within the scope of his or her professional activities if the judge determines that the public interest in having the reporter's testimony outweighs the public interest in keeping the information confidential. In making this determination, the judge shall take into account the importance of the issue on which the information is relevant, the efforts that have been made by the subpoenaing party to acquire evidence on the issue from alternative sources, the sufficiency of the evidence available from alternative sources, the circumstances under which the reporter obtained the information, and the likely effect that disclosure of the information will have on the future flow of information to the public.
(b) The privilege provided by § 4322 of this title shall not prevent a reporter from being required in an adjudicative proceeding to testify concerning either the source or the content of information that the reporter obtained within the scope of his or her professional activities if the party seeking to have the reporter testify proves by a preponderance of the evidence that the sworn statement submitted by the reporter as required by § 4322 of this title is untruthful.