Protection against Unreasonable Searches and Seizures

Fourth Amendment: Part of the U.S. Constitution that guards against unreasonable searches and seizures, along with requiring any warrant to be judicially sanctioned and supported by probable cause.

Probable Cause: A reasonable basis for believing that a crime may have been committed (for an arrest) or when evidence of the crime is present in the place to be searched (for a search).

Warrant: A legal document issued by a judge authorizing police officers to take certain actions; typically involving searching someone’s property.