In Illinois, bounty hunting is banned. The state does not use bonds and bail for people in jail.
Illinois is unfriendly to commercial bail. “No bail bondsman from any state may seize or transport unwillingly any person found in this State who is allegedly in violation of a bail bond posted in some other state[i].” The return of any such person to another state can be accomplished only as provided by the laws of the state. A bail bondsman violating 725 ILCS 5/103-9 is fully subject to the criminal and civil penalties of the state.
In Schilb v. Kuebel, 46 Ill. 2d 538, 544 (Ill. 1970), the court held that the state severely restricts the activities of professional bail bondsmen.
[i] 725 ILCS 5/103-9.