The correct answer is the exclusionary rule.
An exclusionary rule is a law that prohibits law officials from obtaining evidence from a suspect in an illegal manner. This type of law helps to curb the power of police and their conduct, as any evidence gained in an illegal manner cannot be used against the suspect in a court of law.
A bit better not much tho we are not on the edge of bombing each other off the face of the planet
but the tension is still pretty bad none the less