215 ILCS 155/15
Whenever the existing or future laws of any State or country shall require of title insurance companies incorporated or organized under the laws of this State, as a condition precedent to their transacting in such other State or country the business of title insurance , compliance with laws, rules, regulations or prohibitions more onerous or burdensome than those imposed under this Act by this State on foreign title insurance companies transacting such business in this State, or shall require any deposit of securities or other obligations in such State or country for the protection of policyholders, or otherwise, in excess of the amounts required of foreign title insurance companies by this Act, or shall require of Illinois title insurance companies doing such business in such State or country, the payment of penalties, fees, charges or taxes greater than the aggregate for like purposes imposed by the laws of this State upon such foreign title insurance companies, then such laws, rules, regulations, and prohibitions of said other State or country shall apply to title insurance companies incorporated or organized under the laws of such State or country doing business in this State, and all such companies, doing business in this State, shall be required to make deposits with the Department, and to pay to the Department penalties, fees, charges, and taxes at least in amounts equal to those required in the aggregate for like purpose of Illinois companies doing such business in such State or country.
215 ILCS 155/15