During discovery in Andrea Santiago’s class action against the City of Chicago for allegedly violating the takings clause when it seized and disposed of supposedly abandoned vehicles, the city invoked the deliberative-process privilege.Santiago countered with a 2021 district court case that — as a matter of comity — applied the 1998 Illinois Supreme Court decision that rejected this doctrine.The litigation started at the Daley Center. When the city removed the case to federal court, a district judge tossed some of Santiago …