The census is a cornerstone of American democracy. The results of this constitutionally required, once-a-decade count of every person living in the United States dictate how seats in the House of Representatives are divided among the states, how state and local governments draw electoral districts, and how more than $1.5 trillion annually in federal funds is distributed for essential services such as health care, food assistance, and education. At its best, the census offers an authentic picture of who we are as a diverse and growing nation.The 2020 census struggled. It faced a barrage of obstacles, from executive interference to chronic underfunding to the Covid-19 pandemic. In the face of these challenges, it ultimately failed to reach 18...