Kids in cages': It's true that Obama built the cages at the border. But Trump's 'zero tolerance' immigration policy had no precedent. - The Washington Post
First peek: Immigrant children flood detention center
Biden under fire for mass deportations under Obama - POLITICO
Trump Slammed Over Obama-Era Immigration Policies | Law & Crime
U.S. Shutters Warehouse Where Migrants Were Kept in 'Cages' - The New York Times
Immigration Is a Gateway Issue' — and the Contrast Between Trump and Biden Is Stark | KQED