WASHINGTON — President Trump has instructed the Commerce Department to change the way the U.S. Census Bureau collects data, seeking to exclude immigrants who are in the United States illegally, he ...

Andrew J Tatem works for the University of Southampton, and is Director of WorldPop. His research on mapping populations has been funded by donors such as the Gates Foundation, Wellcome Trust, GAVI.

President Donald Trump and the Republican Party have spent the better part of the president’s second term radically reshaping the federal government. But in recent weeks, the GOP has set its sights on ...