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Scooter Libby, the former chief of staff to Vice President Dick Cheney, was convicted of making false statements to investigators probing the leak of the identity of a covert CIA agent, Valerie Plame. The leak, which revealed Plame's status as an undercover operative, was seen as an act of retaliation against her husband, former diplomat Joseph Wilson, who had criticized the Bush administration's claims about Iraq's weapons of mass destruction.