The Chicago Tribune reported that Hoyne Development and Home Builders Association of Greater Chicago are suing the city of Chicago, claiming that the “Affordable Requirements Ordinance is unconstitutional because it involves the taking of private party without ‘just compensation,’ violating the Fifth Amendment.”

Shannon Breymaier, spokeswoman for Chicago Mayor Rahm Emanuel, however, disputes the claims, and told the Chicago Tribune in an email that the city planned to “defend the ordinance vigorously.”