How much has it cost to provide security for DNC? Redacted budget document shows $75M – NBC5 (Chicago)

The email thread between the then-D.C. lobbyist for the Johnson administration and a Congressional aide suggested that Chicago would spend as much as $25 million on Chicago Police overtime, another $10 million on salaries and $25 million on equipment, including a new helicopter. The email thread also shows the $76 million request for a Department of Justice grant went "above and beyond any grant amount previously requested."