The Supreme Court created several search warrant exceptions, mostly based on the "reasonable search" requirement in the Fourth Amendment. In general, most warrantless searches of private premises are prohibited under the Fourth Amendment, unless a specific exception applies.Call Musca Law's Florida Search and Seizure lawyers today at (888) 484-5057 to learn more about your Fourth Amendment rights. There are exceptions, though, including border searches. Amendment 4 maintained the existing constitutional provision that permitted a law requiring parents to be notified before a minor can receive an abortion. 1. Probable Cause: The 4th Amendment requires that law enforcement officers have probable cause or reasonable suspicion to initiate a traffic stop. Probable Cause: The 4th Amendment requires that law enforcement officers have probable cause or reasonable suspicion to initiate a traffic stop. And locked containers located in the vehicle. BACKGROUND. Inventory searches are a "well- defined exception to the warrant requirement of the Fourth Amendment. The Fourth Amendment protects citizens against unreasonable searches and seizures.