Which constitutional protection provides the basis for the exclusionary rule?

• A. Fourth Amendment rights.
• B. First Amendment rights.
• C. Eighth Amendment rights.
• D. Fourteenth Amendment rights.

Answer: (A)

The exclusionary rule rests on the Fourth Amendment’s protection against unreasonable searches and seizures. It bars evidence obtained in violation of that protection from being used in court, serving as a remedy to deter police misconduct. The rule was first recognized for federal cases in Weeks and later applied to the states in Mapp v. Ohio through incorporation by the Fourteenth Amendment, but the underlying basis is the Fourth Amendment itself. The First Amendment covers speech and religion, the Eighth covers punishments, and the Fourteenth addresses due process and equal protection (though it allows applying the Fourth’s protections to the states). So the correct basis is the Fourth Amendment rights.