lance was unlawful.” Of course, a finding by the District Court that the surveillance was lawful would make disclosure and further proceedings unnecessary. Similarly, it is not clear that each petitioner has standing to assert the illegality of the surveillance or of the introduction of its fruits. As in Alderman, Ivanov, and Butenko, these issues are to be resolved by the District Courts in the first instance.
Mr. Justice Black dissents, except in Nos. 895 and 911, in the consideration and disposition of which he took no part.
Mr. Justice White took no part in the consideration or disposition of Nos. 546, 895, and 911.
Mr. Justice Marshall took no part in the consideration or disposition of Nos. 28, 106, 129, 168, 271, 546, 895, and 911.
Mr. Justice Stewart,
concurring.
A few words in amplification of this per curiam opinion may help to avoid misunderstanding on the part of the litigants, and of the District Courts to which these cases are remanded.
As we made explicit in Alderman, Butenko, and Ivanov, the requirement that certain products of governmental electronic surveillance be turned over to defense counsel was expressly limited to situations where the surveillance had violated the Fourth Amendment. We did not decide in those cases, and we do not decide in these, that any of the surveillances did violate the Fourth Amendment.1
1
In oral argument of the Butenko and Ivanov cases, the Solicitor General, mystifyingly, sought to concede that the surveillances there were in fact unconstitutional, although he was repeatedly invited *314to argue that they were not. The following colloquies during oral argument of the Ivanov case are illustrative: “Q. Are you asking us to decide- here or to leave open on remand the question as to whether this violates, this bugging in this particular case, violates the Fourth Amendment? “A. Our position would be the same had it or not. We are not arguing that it did not violate the Fourth Amendment. [figure] “Q. In other words, the premise in which you are proceeding here is that you admit for the purposes of this case that this was illegal bugging? “A. Yes, Mr. Justice. [figure] “Q. And you are going to remain free to argue to the district judge that there was no violation? “A. No, sir.” In deciding those cases, the Court declined to accept the Solicitor General’s proffered concession.