To remove the temptation to ignore constitutional restraints on search and seizure, evidence obtained in violation thereof is made inadmissible against an accused in federal courts.[64] This is contrary to the practice prevailing in the majority of States and has been severely criticized as a matter of principle.[65] The Court has intimated recently that the federal exclusionary rule is not a command of the Fourth Amendment, but merely a judicially created rule of evidence which Congress could overrule. In Wolf v. Colorado,[66] it ruled that while that amendment is binding on the States, it does not prevent State courts from admitting evidence obtained by illegal search. With respect to the federal rule, Justice Frankfurter said: "* * * though we have interpreted the Fourth Amendment to forbid the admission of such evidence, a different question would be presented if Congress, under its legislative powers, were to pass a statute purporting to negate the Weeks doctrine. We would then be faced with the problem of the respect to be accorded the legislative judgment on an issue as to which, in default of that judgment, we have been forced to depend upon our own."[67] This rule does not prevent the use of evidence unlawfully obtained by individuals,[68] or by State officers,[69] unless federal agents had a part in the unlawful acquisition,[70] or unless the arrest and search were made for an offense punishable only by federal law.[71] A search is deemed to be "a search by a federal official if he had a hand in it; * * * [but not] if evidence secured by State authorities is turned over to the federal authorities on a silver platter. The decisive factor * * * is the actuality of a share by a federal official in the total enterprise of securing and selecting evidence by other than sanctioned means. It is immaterial whether a federal agent originated the idea or joined in it while the search was in progress. So long as he was in it before the object of the search was completely accomplished, he must be deemed to have participated in it."[72] Samples of illicit goods constituting part of a quantity seized by federal officials under a valid search warrant may be used as evidence, whether or not the officers become civilly liable as trespassers ab initio, by reason of the fact that they unlawfully destroyed the remainder of the goods at the time the seizure was made.[73]
In Silver Thorne Lumber Co. v.. United States,[74] the Court refused to permit the Government to subpoena corporate records of which it had obtained knowledge by an unlawful search. To permit "knowledge gained by the Government's own wrong" to be so used would do violence to the Bill of Rights.[75] But a defendant in a civil antitrust suit may be required to produce records which had been previously subpoenaed before a grand jury, despite the fact that the grand jury was illegally constituted because women were excluded from the panel.[76] Where government agents lawfully obtained knowledge of the contents of a cancelled check during examination of the records of a government contractor, the admission of such check in evidence was held not to be an abuse of discretion even if the seizure of the check itself was deemed illegal.[77] The seizure of papers under a writ of replevin issued in a civil suit between private persons does not violate the Fourth and Fifth Amendments.[78]
Notes
[1] Carroll v. United States, 267 U.S. 132, 147, 149 (1925).
[2] Burdeau v. McDowell, 256 U.S. 465, 475 (1921).
[3] Den ex dem. Murray v. Hoboken Land & Improv. Co., 18 How. 272, 285 (1856).
[4] Nathanson v. United States, 290 U.S. 41, 47 (1933)
[5] Gouled v. United States, 255 U.S. 298 (1921).
[6] Taylor v. United States, 286 U.S. 1 (1932).
[7] Carroll v. United States, 267 U.S. 132 (1925).