A federal court ruled Tuesday that the government does not need a warrant to access Americans' cell phone records.
A lower judge had ruled that cell phone data is constitutionally protected from intrusion and can only be acquired with a search warrant.
The 5th Circuit Court of Appeals overturned that ruling, saying authorities just need a basic court order instead of a stricter search warrant to track the movements of suspects.
The Fourth Amendment protects against unlawful search and seizure.
But the court stated, "The Fourth Amendment...protects only reasonable expectations of privacy."