It is well-settled that the fourth amendment allows for warrantless arrests outside the home as long as the police have probable cause to arrest the suspect. The Fourth Amendment prohibits the United States government from conducting "unreasonable searches and seizures.The Fourth Amendment to the US Constitution protects against unreasonable governmental searches. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. The Fourth Amendment requires a warrant premised upon probable cause in order to seize someone or search their person or home. This law sets a standard for all search and seizures within the state of Illinois to be carried out with the use of warrants or the presence of 'probable cause. But cracks in the Fourth Amendment have weakened our personal security. States Constitution, the State of Illinois Constitution, the law, and Department policy. Ohio established that the exclusionary rule applies to evidence gained from an unreasonable search or seizure in violation of the Fourth Amendment. —In the early days of the automobile, the Court created an exception for searches of vehicles, holding in Carroll v.