Clarence, a police officer, suspects illegal activities in a commercial building. Unable to establish a probable cause, he breaks into the building and confiscates a pound of cocaine. A judge declares that the evidence is inadmissible as the search was conducted without a warrant. Which of the following provisions of the Fourth Amendment to the United States Constitution made this evidence inadmissible? Multiple choice question. The parol evidence rule The establishment clause The exclusionary rule The double-jeopardy clause