Appellants were convicted of conspiracy to import marijuana. Their conviction rests, in large part, upon evidence seized by the Coast Guard from the British-registered ship Persistence while that ship was sailing on the high seas. Before their trial, the appellants (who are all American citizens) moved to suppress that evidence. In their view, the search violated Article 6 of the
Convention on the High Seas,
opened for signature
April 28, 1958, 13 U.S.T. 2312, T.I.A.S. No. 5200 (entered into force Sept. 30, 1962), which prohibits unauthorized interference with a foreign vessel on the high seas; it lacked statutory authorization; and, in any event, it was unreasonable, and therefore unlawful under the Fourth Amendment. They convinced the district court, but on interlocutory appeal, 18 U.S.C. § 3731, this court rejected their arguments and held the search proper.
United States v. Green,
While it is cold comfort to defendants, we agree with them that the government’s conduct with respect to the tapes presents a dismal story. The defense attorneys, knowing that it was standard Coast Guard practice to record, and to keep for thirty days, all radio communications between the command station and Coast Guard vessels, sent the government within three weeks of the search two written requests and a follow-up request to preserve the relevant Coast Guard tapes. The U.S. Attorney received those letters. The Drug Enforcement Agency saw them. Indeed, various Coast *3 Guard officers received them. Yet, no one took the steps necessary to preserve the tapes. The excuses that their custodians offer — that the requests were too broadly worded, that they were “too busy” to make certain that the tapes were preserved — are lame. The best we can say is that the United States Attorney has promised to prevent recurrences.
Nonetheless, we will not overturn defendants’ convictions without
some
reason to believe that the tapes might materially have helped their case. Courts consistently have refused to impose sanctions when the government has destroyed evidence but the destruction did not prejudice the defendants.
United States v. Arra,
Materiality is the rock upon which this appeal founders. Assuming as much as possible in defendants’ favor, the tapes might show, contrary to other convincing evidence, that the British government did
not
consent to the search. Of course, this court decided this very question on the first appeal,
United States v. Green,
Regardless, even if the government’s misconduct warrants reconsideration of the factual issue, under present law in this circuit the tapes still show too little. In
United States v. Hensel,
Appellants argue that the tapes might also have shown that the Coast Guard’s registration-check was a pretext,
*4
and that the officers’ true motive was the hope of finding marijuana. The Supreme Court, however, has consistently rejected this type of “pretext” argument, most recently in
United States v. Villamonte
Marquez,-U.S.-,
Appellants also claim that the court should have allowed them to use letters rogatory to question British officials about the search.
See
28 U.S.C. § 1781. The object of the questioning, however, was to show that the British neither consented to the search nor asked the United States to check the ship’s registration. But since this evidence would not help the appellants, we find no error in the court’s denial of their motion.
See United States v. Bello,
Finally, appellants ask us to reconsider our holding in
Green
that the Fourth Amendment permits the search of a ship where government officials have only a “reasonable suspicion” of criminal activity, and not “probable cause.” They apparently rely upon an exception to the “law of the case” doctrine, where a “controlling authority has since made a contrary decision of law applicable to [the] issue.”
E.E.O.C. v. International Longshoremen’s Association,
Affirmed.
