A ProPublica investigation found at least 79 children across the country were harmed by tear gas or pepper spray as immigration officers sharply ramped up chemical weapon use during President Trump's immigration crackdown, and warns the chemicals — which are especially toxic to children — could carry long-term consequences. Federal judges in Chicago and Portland found officers used excessive force or showed "deliberate indifference," while DHS defended its agents' conduct and experts urged uniform policies and training.