18 U.S.C. § 3504 : US Code - Section 3504: Litigation concerning sources of evidence

Search 18 U.S.C. § 3504 : US Code - Section 3504: Litigation concerning sources of evidence

(a) In any trial, hearing, or other proceeding in or before any
court, grand jury, department, officer, agency, regulatory body, or
other authority of the United States -
(1) upon a claim by a party aggrieved that evidence is
inadmissible because it is the primary product of an unlawful act
or because it was obtained by the exploitation of an unlawful
act, the opponent of the claim shall affirm or deny the
occurrence of the alleged unlawful act;
(2) disclosure of information for a determination if evidence
is inadmissible because it is the primary product of an unlawful
act occurring prior to June 19, 1968, or because it was obtained
by the exploitation of an unlawful act occurring prior to June
19, 1968, shall not be required unless such information may be
relevant to a pending claim of such inadmissibility; and
(3) no claim shall be considered that evidence of an event is
inadmissible on the ground that such evidence was obtained by the
exploitation of an unlawful act occurring prior to June 19, 1968,
if such event occurred more than five years after such allegedly
unlawful act.
(b) As used in this section "unlawful act" means any act the use
of any electronic, mechanical, or other device (as defined in
section 2510(5) of this title) in violation of the Constitution or
laws of the United States or any regulation or standard promulgated
pursuant thereto.