A recent federal district court ruling upholding seizures of electronic devices, such as laptops and iPhones, at the U.S. border has traveler- and civil-rights organizations worried that personal and sensitive data could be put at risk. On Thursday, almost three dozen organizations — including civil-rights advocates, academic groups, and religious and minority groups — sent an open letter to four congressional committees, asking that their members consider legislation to “protect all Americans against suspicionless digital border inspections.”