APRIL 6--A former top aide to Vice President Dick Cheney told a federal grand jury that President George Bush authorized him to leak information from a classified intelligence report to a New York Times reporter. Details of I. Lewis "Scooter" Libby's testimony were included in a court filing made yesterday by Special Counsel Patrick Fitzgerald, who is prosecuting Libby for perjury, obstruction of justice, and making false statements in connection with the probe into the leaking of CIA agent Valerie Plame's identity. According to Fitzgerald's filing, an excerpt of which you'll find below, Libby, 55, testified in 2003 that he...