Without immigration, the white population in the U.S. would have declined last year. Immigration also propelled the expansion of the Asian population, which was the fastest-growing race or ethnic group last year in the U.S., while births outpacing deaths helped propel growth in Hispanic, Black, tribal and Hawaiian populations. Population estimates released Thursday by the U.S. Census Bureau show what drove changes in different race, ethnic and...

Democrats like to assail former President Donald Trump and Republican governors on immigration. But now they're copying their policy.