Gahagan v. U.S. Citizenship & Immigration Serv. (E.D. La.) -- ruling that USCIS conducted an adequate search; properly invoked Exemption 6 to withhold dates of birth, addresses, phone numbers, social security numbers, and financial information; and properly referred records to U.S. Immigration and Customs Enforcement notwithstanding ICE's four-month delayed response. 

Summaries of all cases since April 2015 are available here.