1.   Silverglate said that, under Justice Department rules, the government can subpoena journalists only with the personal approval of the attorney general.

2.   The rules say the government should subpoena journalists only when it is seeking information that cannot be obtained any other way and the request for such information is specific.

3.   These establish a three-part test for federal prosecutors who seek to subpoena journalists.

4.   Molly Leahy of the Newspaper Association of America expressed concern that more journalists would be subpoenaed to reveal sources.