Even though the topic on the agenda for Wednesday’s Senate Appropriations Committee hearing was Iraq war funding, Sen. Robert Byrd (D-W.Va.) grasped from the moment he arrived that he was the day’s most important subject — and he was ready to make his case. He arrived on time, wore a crisp suit and entered the room smiling. When he left, after two hours, “Shut up” were the only words he had for his critics. He seemed to pass the test, convincing three Senate Democratic leaders that he’s fit to continue as chairman. Byrd knows that he is the most closely...