Federal immigration officers in the Chicago area will be required to wear body cameras, U.S. District Judge Sara Ellis said Thursday after seeing tear gas and other aggressive steps used against protesters. Community efforts to oppose U.S. Immigration and Customs Enforcement have ramped up in the nation’s third-largest city, where neighborhood groups have assembled to monitor ICE activity and film incidents involving agents. More than 1,000 immigrants have been arrested since September. Separately, President Donald Trump’s administration has tried to deploy National Guard troops, but the strategy was halted last week by a different judge.