ROSEMONT, Ill. (AP) — The Border Patrol commander leading an immigration crackdown in Chicago applauded his agents’ aggressive tactics that have prompted resident backlash and lawsuits .

From his use of chemical agents to a helicopter raid on an apartment building, Gregory Bovino defended the approach of U.S. Customs and Border Protection as appropriate and necessary for what he says are threats his agents have faced in the nation’s third-largest city.

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