https://www.npr.org/2019/08/29/755551838/u-s-appeals-court-in-chicago-again-upholds-laws-banning-assault-weapons
The 7th U.S. Circuit Court of Appeals held that two gun owners, who sued over the gun control measures in the county where Chicago is located, "have not come forward with a compelling reason to revisit" since the last time the same court examined a similar challenge — out of the Chicago suburb of Highland Park, which was also sued after passing an assault weapons ban.