We would like to place sales calls to customers of our mortgage subsidiary (though we wouldn’t contact any customer who has opted-out). Is there anything in Illinois law from contacting those customers?

We believe that you would not be restricted from placing marketing calls to your affiliates. Any calls to an affiliate would likely be treated as calls pursuant to an “established business relationship,” which would be exempt from the Illinois do-not-call requirements (in the Restricted Call Registry Act). 815 ILCS 402/5(b).