Ind. Code § 27-4-5-1
The purpose of this chapter is to subject certain insurers to the jurisdiction of the insurance commissioner and the courts of this state in suits by or on behalf of the state. The general assembly declares that it is concerned with the protection of residents of this state against acts by insurers not authorized to do an insurance business in this state, by the maintenance of fair and honest insurance markets, by protecting authorized insurers which are subject to regulation from unfair competition by unauthorized insurers, and by protecting against the evasion of the insurance regulatory laws of this state. In furtherance of such state interest, the general assembly provides methods in this chapter for substituted service of process upon such insurers in any proceeding, suit, or action in any court and substituted service of any notice, order, pleading, or process upon such insurers in any proceeding by the commissioner of insurance to enforce or effect full compliance with this title. In so doing, the state exercises its powers to protect residents of this state and to define what constitutes transacting an insurance business in this state, and also exercises powers and privileges available to this state by virtue of 15 U.S.C. 1011 through 1015, which declares that the business of insurance and every person engaged in the business of insurance shall be subject to the laws of the several states.
IC 27-4-5-1