The Fourth Amendment in its Original Context Primarily concerned with general warrants issued to tax and customs officials. Assumed that people would not tolerate warrantless searches. Admitting the evidence is inevitably to condone and encourage illegal searches. The government must set an example of scrupulous abiding by the law. The courts honor and underscore the value of the 4th amendment by paying such a high price to protect it.
Exclusion asserts judicial independence from the executive branch.
Consequentialist Defenses Deters illegal searches and seizures. Forces police and prosecutors to develop procedures and training regimens that make violations rare. No other alternative is available to the courts. V. Objections to the Rule Little or no empirical evidence that it actually deters police illegality. Most police work is not intended to result in prosecutions.