What Does the Fourth Amendment Mean? The Fourth Amendment generally requires government officials to obtain an arrest warrant or search warrant to execute a valid search and seizure.A search or seizure is generally considered to be unreasonable without a warrant, subject to only a few exceptions. The fourth amendment prohibits "unreasonable" searches and seizures (arrests), and indicates that "unreasonable" means without a warrant. Criminal suspects can voluntarily waive their Fourth Amendment rights and consent to a search of their person or property without a warrant. In 2018, the Supreme Court decided Carpenter v. This means that law enforcement agents need probable cause, and a warrant in most cases, to search your person or belongings. This rule does not modify any statute regulating search or seizure, or the issuance and execution of a search warrant in special circumstances. Law Enforcement when executing a search warrant must show the warrant to the owner of the home they intend to search. It will eliminate loopholes that let the government investigate us and our property without having to get a warrant.