By the close of June, the Supreme Court will almost certainly end affirmative action in college admissions. For Edward Blum, who spearheaded the lawsuits against the University of North Carolina and Harvard—claiming the schools’ race-conscious policies admit unqualified Black and Hispanic students, while “intentionally discriminating” against deserving Asian American applicants—the verdict would fulfill a decades-long quest. In 1992, Blum, who is white, lost his only political run, failing to unseat the Black Democratic incumbent in a majority-Black Houston congressional district that had never elected a Republican. Blum sued Texas, citing racial gerrymandering, and eventually won the case in the US...