If Monarchy Is a Must, Keep It Neutral

With Queen Elizabeth II's passing, the United Kingdom enters not just a period of mourning, but of huge uncertainty. The queen provided a constant presence during 70 years of change—but she played another role. Given that she enjoyed such affection from the British people, she saved us from having to think about the inherent contradictions of a hereditary monarchy and our anachronistic constitution.

Brits loved the Queen, even though deep down plenty of us know hereditary rule is a terrible idea—as it consistently proves in other countries (even U.S.-style political...