Immigration and Customs Enforcement arrested 10,000 people in five days at the end of June — roughly 2,000 arrests per day — as the agency shifted from televised city sweeps to lower-profile tactics after two American citizens were killed during Minneapolis protests. The number of people in ICE detention climbed to about 39,000, up from roughly 30,000 earlier this year. The deportation machinery is accelerating out of the spotlight, which means more...