11.   The Justice Department and the White House on Wednesday challenged those subpoenas, saying they would intrude on a relationship that demands implicit trust and confidentiality.

12.   There have been efforts by some persons and entities to challenge grand jury subpoenas.

13.   Advance notice would have allowed the AP to challenge the subpoena in court.

14.   Sandy Genelius, a CBS News spokeswoman, said the network had filed a motion to challenge the subpoena but it was rejected.

15.   Several deputies have challenged the subpoenas issued by Blumenthal, as did four high sheriffs who were subpoenaed earlier this year.

16.   The grand jury investigation led to a number of court proceedings as witnesses challenged subpoenas or raised other objections.