`Caesar's wife must be above suspicion." - Julius Caesar, 62 B.C. Julius Caesar, the Roman ruler, made that statement while divorcing his wife Pompeia when she was accused of having an affair with his colleague, Clodius Pulcher, a charge that was never proved. If there's one California agency that needs to be as pure as Caesar's wife, it is the Air Resources Board, whose huge powers have made its 11 mostly anonymous members among the most nationally influential of California officials. Until very recently, there's been no reason to doubt the purity of the ARB. Its actions have reduced smog...