CHICAGO — A federal appeals court has blocked an order that required a senior Border Patrol official to brief a judge on Chicago immigration sweeps.

The court intervened on Wednesday before Greg Bovino’s first late afternoon meeting with U.S. District Judge Sara Ellis.

Mr. Bovino, who is leading Border Patrol efforts in Chicago, was ordered Tuesday by U.S. District Judge Sara Ellis to brief her every evening. It is an unprecedented bid to impose real-time oversight on the Trump administration’s immigration crackdown after weeks of tense encounters and increasingly aggressive tactics by agents in the city. The operation has produced more than 1,800 arrests and complaints of excessive force.

Judge Ellis' order followed enforcement actions in which tear gas was used, including in a neighbo

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