A revealing and interesting interview with the outgoing Director of the Office of Science and Technology Policy, John Marburger. Money quote:
Seed: Did you see President Bush ever change his mind based on the scientific evidence that you presented him?
JM: As far as I can tell, the president, as a matter of principle, doesn't think it's wise to defy nature. By the time I've arranged a presentation about something for the president, all science questions have been resolved. And he expects it. He would probably fire me if I permitted a science question to leak into his briefings. I'm there to make sure that his advisors and his agencies have consulted with the science community, and that all the science issues have been taken care of before anything gets to him.