Back in Washington, former New York Times reporter Judith Miller testified Tuesday in the perjury and obstruction trial of Vice President Dick Cheney’s former chief of staff, Lewis “Scooter” Libby. Miller became the sixth witness to reveal Libby talked about former CIA operative Valerie Plame earlier than he has claimed. Miller spent nearly three months in jail in 2005 for refusing to reveal her confidential source in her coverage of the case. The source turned out to be Libby.