Pretti was shot and killed by federal officers on Jan. 24.
A man was taken by federal immigration agents after reporting a crime that ultimately helped officers find a convicted felon.
Victims of federal immigration operations are accusing agents of violence and breaking Illinois law.
U.S. Immigration and Customs Enforcement said it expects every officer and agent in the field to be equipped with a body camera by the end of August.
ICE is moving to equip officers with body cameras in the next two months but the agency's policy gives it broad control over what footage will be made public by specifying any releases must be in its "best interests."
U.S. Immigration and Customs Enforcement is threatening to have Cook County Sheriff Tom Dart criminally charged. In letters obtained by the ABC7 I-Team, ICE requested Sheriff Dart serve immigration subpoenas.