In "Terry v. Ohio" (1968), the Supreme Court ruled that police may stop a person only if they have a reasonable suspicion that the person has committed or is about to commit a crime, and may frisk the suspect for weapons if they have reasonable suspicion that the suspect is armed and dangerous. In an analog case, the Supreme Court ruled in "Delaware v. Prouse" (1979) that stopping automobiles for no reason other than to check the driver's license and registration violates the Fourth Amendment. In the case "Florida v. J. L." (2000), the court ruled that a police officer may not legally stop and frisk anyone based solely on an anonymous tip that simply described that person's location and appearance without information as to any illegal conduct that the person might be planning.