The recent indictment of former vice presidential chief of staff Lewis Libby in the CIA leak case and the debate over presidential senior adviser Karl Rove's involvement have posed challenges to the White House's senior officials.

Questions have been raised about whether a law should exist to shield journalists from revealing sources. Many are concerned confidential sources will no longer trust journalists who fear jail time. Following a background report, four experts discuss the CIA leak…

A reporter for the Washington Post and a staff writer for the New Yorker take a closer look at Lewis Libby, Vice President Dick Cheney's chief of staff, and his role in the CIA leak case.

Vice presidential adviser I. Lewis "Scooter" Libby was indicted Friday in the CIA leak investigation, and he subsequently resigned. Special prosecutor Patrick Fitzgerald outlined the charges at a press briefing. The NewsHour provides extended excerpts from that briefing.

A media unit update tracks the recent controversy at The New York Times over Judith Miller, a Times reporter involved in the CIA leak case and the author of articles containing erroneous information about weapons of mass destruction.

New York Times columnist David Brooks and Boston Globe columnist Tom Oliphant discuss senators' reactions to Supreme Court nominee Harriet Miers, Tom DeLay's indictment on charges of money laundering, the CIA leak investigation and the war in Iraq.

The New York Times recently issued a lengthy appraisal of its CIA leak coverage. The Times has stood for months behind reporter Judith Miller, who was jailed after failing to reveal a confidential source. Two experts discuss the situation at…