Plame and her husband were an example of clear corruption. She was using her intel position to feed information to her husband for more political uses. They got caught, and paid the price that a career government employee pays when they get involved in politics - career ended.
Suffice to say that your summary doesn't do justice to the actual story, they didn't have much that was of value and are only well known because of the politics they were involved in. They couldn't make their lawsuits stick and now she's writing spy novels. So much for Valerie Plame.