Why Jon Stewart failed to make John Yoo squirm.
Stewart could have raised similar points. But those aren't damning witticisms. They're nuanced arguments, to which the most likely reaction would be "Hmm, that sounds sensible." Stewart is effective when his opponent is making a foolish point, not when he has an unorthodox constitutional interpretation. Which is why Stewart wasn't going to pin Yoo down—even if he had done all the reading.
Christopher Beam is a writer living in Beijing.
Photograph of John Yoo by Melissa Golden/Getty Images.