The ongoing two-act comic tragedy now playing at the Cook County Board dramatizes Yogi Berra's famous observation: "It's deja vu all over again." Stroke-stricken John Stroger sent a letter resigning his presidency last week. His successor is set to be selected by board commissioners on Wednesday. Within weeks after Stroger was stricken on March 14, Ald. Todd Stroger began positioning himself as the heir apparent for his father's post. That's when I began seeing deja vu, too. After the death of Harold Washington 19 years ago, there was a power struggle among African-American politicians over who would succeed Chicago's first...