Overview
- Federal immigration agents hand-delivered letters in early July warning Hennepin County Sheriff Dawanna Witt and Cook County Sheriff Tom Dart that refusing to turn over inmates sought by ICE could lead to federal witness‑tampering charges.
- Both sheriffs have publicly said they will keep longstanding policies that honor ICE custody requests only when supported by a judicial warrant and will not change practice because of the letters.
- Legal analysts and former federal prosecutors say the witness‑tampering theory is legally weak and unlikely to result in charges, and federal judges in Minnesota and Illinois have already dismissed related DOJ suits against the sheriffs.
- The Department of Homeland Security described the letters as an effort to compel 'sanctuary politicians' to hand over dangerous offenders while the National Sheriffs’ Association says it knows of no other similar criminal threat to a sheriff.
- The dispute builds on aggressive operations such as Operation Metro Surge that disrupted communities and caused large economic losses, and it could deepen federal‑local legal battles and political tension over immigration enforcement.