Questions: The exclusionary rule stops one from..... Using double jeopardy in criminal cases Using illegally obtained evidence against the accused Using a violation of due process of law A trial without a jury

The exclusionary rule is a legal principle in the United States that prevents the use of evidence collected or analyzed in violation of the defendant's constitutional rights. Its primary purpose is to deter law enforcement from conducting unlawful searches and seizures, thereby upholding the Fourth Amendment, which protects against unreasonable searches and seizures.

1. Historical Background: The exclusionary rule was established in the early 20th century. One of the landmark cases that solidified its application was _Weeks v. United States_ (1914), where the Supreme Court held that evidence obtained in violation of the Fourth Amendment could not be used in federal courts. This principle was later extended to state courts in _Mapp v. Ohio_ (1961).

2. Purpose and Function: The rule serves as a check on police power, ensuring that evidence obtained through illegal means is not admissible in court. This is intended to protect individuals' constitutional rights and maintain judicial integrity by not condoning illegal conduct by law enforcement.

3. Exceptions: There are notable exceptions to the exclusionary rule, such as the "good faith" exception established in _United States v. Leon_ (1984), where evidence obtained with a defective warrant may still be admissible if the police acted in good faith belief that the warrant was valid. Another exception is the "inevitable discovery" doctrine, which allows for the admission of evidence that would have been discovered lawfully eventually.

4. Criticism and Support: The exclusionary rule has been both criticized and supported. Critics argue that it can allow guilty individuals to go free on technicalities, while supporters claim it is essential for protecting civil liberties and ensuring that law enforcement agencies adhere to constitutional standards.

In summary, the exclusionary rule is a fundamental aspect of the American legal system designed to protect constitutional rights by excluding illegally obtained evidence from being used in court.