Tensions Mount as Agents, Including Gregory Bovino, Clash With Chicagoans

Mr. Bovino, a Border Patrol leader, appeared to use tear gas during a confrontation with residents on Thursday. Plaintiffs in a suit over federal tactics say that violated a court order.

​ Mr. Bovino, a Border Patrol leader, appeared to use tear gas during a confrontation with residents on Thursday. Plaintiffs in a suit over federal tactics say that violated a court order.