Cite as: 504 U. S. 36 (1992)
Opinion of the Court
prosecution tendered to the grand jury defense-provided exhibits, testimony, and explanations of the governing law), aff'd sub nom. United States v. Brown, 943 F. 2d 1246, 1257 (CA10 1991).
Respondent acknowledges (as he must) that the "common law" of the grand jury is not violated if the grand jury itself chooses to hear no more evidence than that which suffices to convince it an indictment is proper. Cf. Thompson, supra, at 607. Thus, had the Government offered to familiarize the grand jury in this case with the five boxes of financial statements and deposition testimony alleged to contain exculpa-tory information, and had the grand jury rejected the offer as pointless, respondent would presumably agree that the resulting indictment would have been valid. Respondent insists, however, that courts must require the modern prosecutor to alert the grand jury to the nature and extent of the available exculpatory evidence, because otherwise the grand jury "merely functions as an arm of the prosecution." Brief for Respondent 27. We reject the attempt to convert a nonexistent duty of the grand jury itself into an obligation of the prosecutor. The authority of the prosecutor to seek an indictment has long been understood to be "coterminous with the authority of the grand jury to entertain [the prosecutor's] charges." United States v. Thompson, 251 U. S., at 414. If the grand jury has no obligation to consider all "substantial exculpatory" evidence, we do not understand how the prosecutor can be said to have a binding obligation to present it.
There is yet another respect in which respondent's proposal not only fails to comport with, but positively contradicts, the "common law" of the Fifth Amendment grand jury. Motions to quash indictments based upon the sufficiency of the evidence relied upon by the grand jury were unheard of at common law in England, see, e. g., People v. Restenblatt, 1 Abb. Pr. 268, 269 (Ct. Gen. Sess. N. Y. 1855). And the traditional American practice was described by Justice Nelson, riding circuit in 1852, as follows:
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