United States Court of Appeals For the Seventh Circuit ____________________ No. 23-1010 UNITED STATES OF AMERICA, Plaintiff-Appellee, v. DENY MITROVICH, Defendant-Appellant. ____________________

Appeal from the United States District Court for the Northern District of Illinois, Eastern Division. No. 1:18-cr-00789-1 — Gary Feinerman, Judge. ____________________

ARGUED NOVEMBER 29, 2023 — DECIDED MARCH 12, 2024 ____________________

Before RIPPLE, SCUDDER, and JACKSON-AKIWUMI, Circuit Judges. SCUDDER, Circuit Judge. A sprawling multinational investi- gation resulted in the indictment of Deny Mitrovich, a Chi- cago native, for possessing child pornography. To mount a defense, Mitrovich sought technical information about the software program that Australia and New Zealand had used to identify his computer. The United States did not have that information and, despite repeated efforts, was not able to 2