Definition - What does Exclusionary Rule mean?
The exclusionary rule is a rule that prevents attorneys from using evidence in trials that was obtained unlawfully. For example, due to the exclusionary rule, an attorney would not be able to use evidence recovered during an unlawful search and seizure.
The exclusionary rule is highly relevant in many court cases.
Justipedia explains Exclusionary Rule
Because of the exclusionary rule, it is essential for attorneys to make sure that all of the evidence that they plan on using for their cases is obtained in accordance with the Constitution.
In addition to evidence from unlawful searches and seizures, the exclusionary rule also forbids evidence obtained in situations where the right to counsel provided by the Sixth Amendment was violated.
Other evidence that is legally obtained can still be used.