What did Mapp v. Ohio accomplish in relation to the Exclusionary Rule?

• A. It made it applicable only to federal cases
• B. It extended the rule to include state and local cases
• C. It forfeited the right to search without a warrant
• D. It established mandatory penalties for police misconduct

Answer: (B)

Mapp v. Ohio was a landmark case that fundamentally changed the application of the Exclusionary Rule by extending it to state and local cases. Prior to this ruling, the Exclusionary Rule, which prohibits the use of unlawfully obtained evidence in court, was applicable only in federal cases. This meant that evidence gathered in violation of a person's Fourth Amendment rights could still be used in state prosecutions.

The Supreme Court's decision in Mapp v. Ohio established that the protections against unreasonable searches and seizures provided by the Fourth Amendment are applicable to state courts through the Fourteenth Amendment's Due Process Clause. As a result, any evidence obtained unlawfully by state or local law enforcement officers cannot be used in criminal prosecutions. This expansion was significant because it ensured that defendants in state courts were afforded similar protections against unreasonable searches as those in federal cases, reinforcing the integrity of the judicial system and the rights of individuals.