Indiana Code Title 36. Local Government § 36-1-7-8

Sec. 8. If any entities of other jurisdictions are parties to an agreement under section 3 of this chapter, the agreement constitutes an interstate compact.  However, in a case or controversy involving such an agreement, all parties to the agreement shall be considered real parties in interest;  and if the state suffers any damages or incurs any liability as a result of being joined as a party in such a case or controversy, it may bring an action against any entity causing the state to suffer damages or incur liability.