The Fourth Amendment prohibits the United States government from conducting "unreasonable searches and seizures. Fourth Amendment found easy acceptance in the Supreme Court30 and that acceptance controlled decision in numerous cases.The Fourth Amendment requires a warrant premised upon probable cause in order to seize someone or search their person or home. 4th Amendment Simplified. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. But cracks in the Fourth Amendment have weakened our personal security. A vacancy on the Board shall be filled for a full term in the manner the original appointment was made. Upon whether the person who claims the protection of the Amendment has a legitimate expectation of privacy in the invaded place. —In the early days of the automobile, the Court created an exception for searches of vehicles, holding in Carroll v. Four of the six Fourth Amendment cases last Term involved state law enforcement officers searching passenger cars for drugs.