( March 25, 2025, 8:52 AM EDT) -- CINCINNATI — The Sixth Circuit U.S. Court of Appeals denied an en banc hearing to review its ruling that while a district court properly excluded expert testimony on causation, it erred in excluding design defect testimony and reversed an award of summary judgment, rejecting a gun manufacturer’s argument that the ruling that expert testimony on causation is not needed in a complex design defect case “misapprehended Kentucky law.”...