Federal agents fired pepper balls and tear gas at protesters near an immigration enforcement building in suburban Chicago. The conflict over several hours Friday is the latest pushback by federal authorities against protesters focused on the U.S. Immigration and Customs Enforcement building in Broadview, about 12 miles west of Chicago, amid a surge of immigration enforcement that began early this month. Agents repeatedly fired chemical agents toward protesters after some of the group attempted to block a car from driving down a street toward the ICE building.