"Linda is actually very encouraged by the quality and the content of the questions presented by the grand jurors and by the prosecutor, " Murtha said.

CNN: Investigating the President

"It might be illegal because of certain rules that protect the privacy and secrecy of what goes before a grand jury, " former Justice Department prosecutor Martin Pollner said.

CNN: Did Ken Starr Break The Law By Speaking To The Press?

Special prosecutor Patrick Fitzgerald said Libby told the grand jury and FBI agents that he first learned that Plame worked at the CIA from Russert, host of NBC's "Meet the Press, " during a conversation on July 10, 2003.

CNN: Ex-Cheney aide pleads not guilty