(a) Except as provided by Section 887.102, the department shall require an association or person to hold a certificate of authority issued by the department before the association or person may engage in the business of insurance in this state.
(b) If an association or person writes insurance without a certificate of authority issued under Subsection (a), the department shall notify the attorney general. The attorney general shall institute proceedings in the district court of Travis County to restrain the association or person from writing insurance without a certificate of authority.