Rep. Henry Waxman announced today that he'll consider issuing four subpoenas in a meeting this coming Wednesday, April 25. In a letter to one subpoena target, the Oversight Committee Chairman complained that a former White House Chief of Staff appeared on Comedy Central's 'The Daily Show,' but has so far refused to testify before his committee.

"On April 16,2007, you appeared on The Daily Show with Jon Stewart and discussed the leak of [former covert CIA Agent Valerie Plame] Wilson's identity," Waxman (D-CA) wrote to Andrew Card, the former White House Chief of Staff. "[White House Counel Fred] Fielding's position appears to be that it is appropriate for you to discuss these matters on The Daily Show, but not before a congressional committee. You will not be surprised to learn that I take a different view of this matter."

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