William J. Brennan, Jr., Warden Maryland Penitentiary v…
“ Nothing in the language of the Fourth Amendment supports the distinction between 'mere evidence' and instrumentalities, fruits of crime, or contraband. On its face, the provision assures the 'right of the people to be secure in their persons, houses, papers, and effects * * *,' without regard to the use to which any of these things are applied. This 'right of the people' is certainly unrelated to the 'mere evidence' limitation. Privacy is disturbed no more by a search directed to a purely evidentiary object than it is by a search directed to an instrumentality, fruit, or contraband. ”
