664
Opinion of the Court
According to respondent, Article 9 embodies the terms of the bargain which the United States struck: If the United States wishes to prosecute a Mexican national, it may request that individual's extradition. Upon a request from the United States, Mexico may either extradite the individual or submit the case to the proper authorities for prosecution in Mexico. In this way, respondent reasons, each nation preserved its right to choose whether its nationals would be tried in its own courts or by the courts of the other nation. This preservation of rights would be frustrated if either nation were free to abduct nationals of the other nation for the purposes of prosecution. More broadly, respondent reasons, as did the Court of Appeals, that all the processes and restrictions on the obligation to extradite established by the Treaty would make no sense if either nation were free to resort to forcible kidnaping to gain the presence of an individual for prosecution in a manner not contemplated by the Treaty. Verdugo, supra, at 1350.
We do not read the Treaty in such a fashion. Article 9 does not purport to specify the only way in which one country may gain custody of a national of the other country for the purposes of prosecution. In the absence of an extradition treaty, nations are under no obligation to surrender those in their country to foreign authorities for prosecution. Rauscher, 119 U. S., at 411-412; Factor v. Laubenheimer, 290 U. S. 276, 287 (1933); cf. Valentine v. United States ex rel. Neidecker, supra, at 8-9 (United States may not extradite a citizen in the absence of a statute or treaty obligation). Extradition treaties exist so as to impose mutual obligations to surrender individuals in certain defined sets of circumstances, following established procedures. See 1 J. Moore, A Treatise on Extradition and Interstate Rendition § 72 (1891). The Treaty thus provides a mechanism which would not otherwise exist, requiring, under certain circumstances, the United States and Mexico to extradite individuals to the
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