The history of the Bioethics Council in light of recent events - and the events themselves - are summarized by Timothy Noah over at Slate in a piece entitled "Leon Kass, You Silly Ass!
Please stop denying you tilted the bioethics panel." It's a good article, and ends with the comments:
In arguing that he isn't trying to tilt his panel's balance, Kass is doing something nobody in the ethics racket should ever do. He's telling a big, fat, utterly transparent lie.