President Trump's "Border czar" Tom Homan and other top officials oversaw immigration enforcement efforts in Chicago on Sunday, as ICE officials announced 956 arrests in one day on Sunday Why it matters: The largest number of single-day arrests announced by Immigration and Customs Enforcement since Trump took office last Monday and declared a national emergency on the U.

Nearly 1,000 people were arrested by federal agencies in a blitz to enforce immigrations policies across the United States, according to multiple reports.