A police officer accused of framing nine people during a sex-trafficking investigation is off the hook even if she did it, a federal appeals court ruled June 12.

The lawsuit by six acquitted criminal defendants accused Minnesota cop Heather Weyker of deceiving prosecutors, the grand jury, and other law enforcement officers during a 10-year, four-state investigation by fabricating reports, hiding evidence, and pressuring alleged victims into lying. The appeals court that upheld the acquittals expressed its concern “that this story...