ST. LOUIS - A general liability insurer has no duty to defend its city insured against a school board's claims that the insured wrongfully withheld tax revenues, an Illinois federal magistrate judge ruled April 30, granting the insurer's motion for summary judgment (City of Marion, Ill. v. U.S. Specialty Ins. Co., No. 12-cv-0999-SCW, S.D. Ill.; 2013 U.S. Dist. LEXIS 61900).