In this emergency appeal, heard on October 13, 1983, the petitioners sought a writ of mandamus compelling either a decision from the district court on their application for immediate access to inspect and copy audiо- and videotapes admitted into evidence or used in an ongoing criminal trial, or a stay in the criminal proceedings until a decision was rendered. In the alternative, the media petitioners requested an order granting them contemporaneous access to inspect and copy the audio- and videotapes. In an oral decision from the bench, this court denied the media’s petition for a writ of mandamus and refused to issue an order granting them contemporаneous access to the tapes.
The underlying criminal prosecution in this case accuses an official of the City of Detroit and four others of conspiring to defraud the City of Detroit. Prior to the start of the trial, it was public knowledge thаt the government was planning to rely on audio- and videotapes in its presentation to the jury. On August 17, 1983, the district court heard defense motions to suppress the tape recordings. Although present in the courtroom, the press did not present the distriсt court with an application to copy the tape recordings.
The trial began on September 26, 1983. Arrangements were made to guarantee the press unfettered access to the trial. Front-row seats were reserved for the press; the tapes were played in a manner which permitted public viewing; and all evidentiary rulings were made in open court. The media petitioners first intervened to challenge the closure of jury voir dire. Initially, the voir dire had been сonducted in chambers because of excessive pretrial publicity. The defendants, however, withdrew their request to close the voir dire, and the process was moved to the jury room which permitted public viewing. Inexplicably, questions during vоir dire did not address the possibility of jury sequestration, despite the extensive pretrial media attention surrounding the case. On September 29, a jury was impaneled.
Testimony in the case began on October 3. On October 5, the district court adjourned thе proceedings until October 11 to consider several evidentiary issues. Throughout this time the district court received no formal application from the media for aceess to the tapes, even though on October 3 it had decided that certain portions of the tapes would be admitted into evidence. 1
On October 7, the district court received the petitioners’ formal application for contemporaneous access to the tapes admitted intо evidence or used in the trial. On the same day, arguments were heard on the petitioners’ application. Realizing that a hurried determination on the petitioners’ application might prejudice the fair-trial rights of the defendants, while аt the same time recognizing the importance of the petitioners’ claim, the district court decided that additional time was needed to consider the petitioners’ application. Unaware that each of the defendants hаd joined in replying to the petitioners’ application, the court collectively granted all the defendants ten days to respond. It is clear, however, that the district court did not rule on the merits of the petitioners’ claim of immediate access.
In their brief the petitioners argue they have a right to contemporaneously inspect and copy the documentary and non-documentary evidence admitted in the proceedings below. They assert that any delay in acting on their claim violates their constitutional and common law rights of access to judicial records.
The district court, on the other hand, states in its response filed in this court that, *328 prior to the petitioner’s October 7 applicаtion, it never considered the issue of contemporaneous access to the tapes. The district court faults the petitioners’ lack of timeliness in presenting their application. The district court notes that because it was unaware of the petitioners’ desire for contemporaneous access, it did not consider the possibility of sequestering the jury. Now, it contends, sequestration is impossible because the trial is expected to be quite lengthy and the jurors wеre not warned that they might be sequestered. The district court states the “emotional and financial cost of ... a lengthy sequestration is unjustified.”
The district court also contends that contemporaneous access is inappropriate because “the history of this case [indicates] that a copying of the tapes would transform this already highly publicized trial into an entertaining carnival.” The court states that the “defendants’ right to a fair trial would be seriously jeopardized if thе tapes were made available to the media at the same time that they were introduced into trial.” In its view, cautionary instructions to an unsequestered jury would be insufficient to protect the defendants’ constitutional right to a fair trial.
In an оral decision from the bench, this court denied the petitioners’ request for a writ of mandamus and refused to issue an order granting them immediate access to the tapes in question. We did not, however, reach the merits of petitioners’ constitutional and common law claims because we found the controversy between the petitioners and the district court insufficiently developed to merit adjudication.
It is settled doctrine that we do not render advisory opinions.
United States v. Fruehauf,
28 U.S.C. § 1291 gives this court the authority to hear “appeals from all
final
decisions of the district courts.” (emphasis added) “The effect of the statute is to disallow appeal from а decision which is tentative, informal or incomplete. Appeal gives the [court of appeals] a power of review, not one of intervention. So long as the matter remains open, unfinished or inconclusive, there may be nо intrusion by appeal.”
Cohen v. Beneficial Industrial Loan Corp.,
Nor was this a case suitable for application of the collateral order doctrine. The requirements of this doctrine are: (1) that the matter appealed from must have been finally determined by the district court; (2) that the matter must be separable from, and collateral to rights asserted in the action and neither affect nor be affect
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ed by decision on the merits; and (3) that the rights asserted would be lost, probably irreparably, if review were delayed until the conclusion of proceedings in the district court.
In Re General Motors Corp. Engine Interchange Lit.,
Similarly, this was not a case warranting a writ of mandamus. The “traditional use of the writ in aid of apрellate jurisdiction both at common law and in the federal courts has been to confine an inferi- or court to a lawful exercise of its prescribed jurisdiction or to compel it to exercise its authority
when it is its duty to do so.” Roche v. Evaporated Milk Ass’n.,
For these reasons, we denied the petitioners’ request for a writ of mandamus, and denied their request for an order granting
*330 them contemрoraneous access to the tapes admitted into evidence or used in the underlying criminal prosecution. We emphasize that this opinion does not in any manner whatsoever address the merits of the petitioners’ claim.
Notes
. Sometimе during the first week in October, counsel for the government notified the court during an in chambers conference that it had received an informal request from the press for access to the tapes. Because the court had received no formal application from the press, it declined to consider the matter.
