Less than a month after being painted as a ruthless, ambition-driven seductress in Ed Klein’s Katie: The Real Story, Ms. Couric and her ratings still have not rebounded. CBS Evening News dipped to a record low of 5.5 million viewers last week amidst a high-profile trip to Iraq. It is likely that the trip was intended to ratchet up Ms. Couric’s credibility as a journalist, but it seems that viewers still have a hard time digesting hard news from “America’s sweetheart.”