(November 18, 2015, 10:24 AM EST) -- CHICAGO — A first-level insurance provider and a sub-broker filed briefs in the Seventh Circuit U.S. Court of Appeals, debating whether the broker owed any duty and, therefore, bore any liability for its role in the procurement of insurance policies that were ultimately discovered to be fraudulent (M.G. Skinner and Associates Insurance Agency Inc. v. Norman-Spencer Agency Inc., No. 15-2290, 7th Cir.)....