What does the exclusionary rule state regarding evidence obtained illegally?

The exclusionary rule is a legal principle that provides that evidence obtained in violation of a person's constitutional rights cannot be used in a court of law. This rule is rooted in the need to deter law enforcement from conducting illegal searches and seizures and to uphold the integrity of the judicial process. When evidence is obtained illegally, such as through warrantless searches that do not meet exceptions or through coercive interrogation tactics, it is deemed inadmissible during a trial. Thus, the prosecution cannot present this evidence in court against the accused, thereby reinforcing the protection of individuals' rights under the Fourth Amendment and ensuring that courts do not condone illegal actions by law enforcement. This principle is critical in maintaining a fair justice system where all evidence presented must be gathered lawfully.