The census shows the US needs to increase immigration — by a lot

The results of the 2020 census are a warning sign that America is on a course for slow population growth.

Economists broadly agree that population growth fuels economic growth in wealthy countries. But the recently released census figures show the US population grew by just 7.4 percent, or 331.5 million people, between 2010 and 2020 — the lowest rate since the 1930s. Projections suggest that, unless current trends change, those numbers could continue to diminish dramatically over the next two to three decades, with the population growing by just 78...