John Yoo's Torture Memo

Just for completeness's sake, here's a run-down on John Yoo's torture memo. Now, I'm not a legal scholar, hell, I don't even play one on TV, but even I can tell that a legal justification that essentially says, "We can break the law as long as we really really need to" is bullshit. So remind me again, why the hell is Yoo on the faculty at Cal?