The U.S. Supreme Court heard arguments this week in United States Dept. of Commerce v. New York, a case that will determine if the Census Bureau can reintroduce a citizenship question on the 2020 decennial census. While adding a citizenship status question may seem a reasonable public policy decision — virtually every country in Europe and elsewhere does so — it has generated a heated political debate about reapportionment, redistricting, federal funding, and, naturally, partisan power.

Let’s hope the justices allow a citizenship question, because it has the potential to restore electoral equality for all U.S. citizens as well as the principle of one person, one vote.