On Nov. 8, the Financial Crimes Enforcement Network, a unit of the U.S. Treasury Department, announced it was renewing its regulation targeting secret buyers of residential real estate properties in various cities, including Chicago.In 2016, FinCEN issued a geographic targeting order requiring U.S. title insurance companies to report the identity of the beneficial owners of limited liability companies and other shell companies that purchase residential real estate without bank loans in two locations — New York and …