Not sure if this was an unreasonable search but yeah Missouri in 2014 was the first state to pass a privacy law.
Missouri became the first state in the nation Tuesday to offer explicit constitutional protections of electronic communications and data from warrantless search and seizure by law enforcement.
The amendment to the state’s constitution places communications such as emails, text messages, and cloud storage under the same Fourth Amendment protection from unreasonable searches and seizures as “persons, homes, papers and effect” and will require police to have a warrant to gain access to phones, laptops, and electronic communications. It passed with 75% support in a statewide ballot effort.