CHICAGO — A federal judge castigated the Department of Homeland Security on Thursday for its aggressive use of force during an illegal immigration crackdown in Chicago in recent weeks, banning the use of tear gas and other crowd-control weapons “unless necessary to stop the immediate threat of physical harm.”

Judge Sara L. Ellis, of U.S. District Court for the Northern District of Illinois, said that government officials, including senior Border Patrol official Gregory Bovino, had repeatedly lied about their own tactics and the actions of protesters. The injunction granted by Ellis on Thursday extends temporary restrictions that she issued last month. Ellis ordered federal agents to wear body cameras, give at least two audible warnings before using riot control weapons, and to use those weapons only to “preserve life or prevent catastrophic outcomes.” She said the restrictions were necessary because immigration agents in Chicago had pointed guns at civilians who were not presenting a physical threat, used pepper spray, deployed tear gas and shot pepper balls.

— The New York Times