The U.S. Supreme Court unanimously ruled on Monday that an exception to the Fourth Amendment for “community caretaking” does not allow police to enter and search a home without a warrant. The “community caretaking” exception originated from a 1973 case, Cady v. Dombrowski, in which an officer took a gun out of an impounded car without a warrant. The Supreme Court ruled at the time that police can conduct such warrantless searches if they are performing “community caretaking functions” in a “reasonable” manner.