The U.S. attorney’s office in Chicago is among the most prestigious in the country, known for winning ambitious cases against everyone from Al Capone to the former Illinois governor Rod R. Blagojevich.

But the Trump administration’s immigration sweep in Chicago last fall has left the office in crisis.

The office brought a wave of doomed cases that accused protesters and immigrants of assaulting federal officers. That accelerated an exodus of veteran prosecutors, some of whom felt they’d been wrongly pressured into pursuing the charges, former prosecutors said in interviews.

https://archive.is/XVTGs