What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
UNITED STATES v. MARA, aka MARASOVICH
No. 71-850.
Argued November 6, 1972
Decided January 22, 1973
Stewart, J., delivered the opinion of the Court, in which Burger, C. J., and White, Blackmun, Powell, and RehNQuist, JJ., joined. Douglas, J., post, p. 23, Brennan, J., post, p. 22, and Marshall, J., post, p. 31, filed dissenting opinions.
Philip A. Lacovara argued the cause for the United States. On the brief were Solicitor General Griswold, Assistant Attorney General Petersen, Wm. Bradford Reynolds, Beatrice Rosenberg, and Sidney M. Glazer.
Angelo Ruggiero argued the cause and filed a brief for respondent.
Phylis Skloot Bamberger argued the cause for the Federal Community Defender Organization of the Legal Aid Society of New York as amicus curiae urging affirmance. With her on the brief was William E. Hellerstein.
Mr. Justice Stewart
delivered the opinion of the Court.
The respondent, Richard J. Mara, was subpoenaed to appear before the September 1971 Grand Jury in the Northern District of Illinois that was investigating thefts of interstate shipments. On two separate occasions he was directed to produce handwriting and printing exemplars to the grand jury’s designated agent. Each time he was advised that he was a potential defendant in the matter under investigation. On both occasions he refused to produce the exemplars.
The Government then petitioned the United States District Court to compel Mara to furnish the handwriting and printing exemplars to the grand jury. The petition indicated that the exemplars were “essential and necessary” to the grand jury investigation and would be used solely as a standard of comparison to determine whether Mara was the author of certain writings. The petition was accompanied by an affidavit of an FBI agent, submitted in camera, which set forth the basis for seeking the exemplars. The District Judge rejected the respondent’s contention that the compelled production of such exemplars would constitute an unreasonable search and seizure, and he ordered the respondent to provide them. When the witness continued to refuse to do so, he was adjudged to be in civil contempt and was committed to custody until he obeyed the court order or until the expiration of the grand jury term.
The Court of Appeals for the Seventh Circuit reversed. 454 F. 2d 580. Relying on its earlier decision in In re Dionisio, 442 F. 2d 276, rev’d, ante, p. 1, the court found that the directive to furnish the exemplars would constitute an unreasonable search and seizure. “[I]t is plain that compelling [Mara] to furnish exemplars of his handwriting and printing is forbidden by the Fourth Amendment unless the Government has complied with its reasonableness requirement . . . 454 F. 2d, at 582.
The court then turned to two issues necessarily generated by its decision in Dionisio — the procedure the Government must follow and the substantive showing it must make to establish the reasonableness of the grand jury's directive. It rejected the in camera procedure of the District Court, and held that the Government would have to present its affidavit in open court in order that Mara might contest its sufficiency. The court ruled that to establish “reasonableness” the Government would have to make a substantive showing: “that the grand jury investigation was properly authorized, for a purpose Congress can order, that the information sought is relevant to the inquiry, and that . . . the grand jury process is not being abused. . . . [T]he Government’s affidavit must also show why satisfactory handwriting and printing exemplars cannot be obtained from other sources without grand jury compulsion.” 454 F. 2d, at 584^585.
We granted certiorari, 406 U. S. 956, to consider this case with United States v. Dionisio, No. 71-229, ante, p. 1.
We have held today in Dionisio, that a grand jury subpoena is not a “seizure” within the meaning of the Fourth Amendment and, further, that that Amendment is not violated by a grand jury directive compelling production of “physical characteristics” that are “constantly exposed to the public.” Ante, at 9, 10, 14. Handwriting, like speech, is repeatedly shown to the public, and there is no more expectation of privacy in the physical characteristics of a person’s script than there is in the tone of his voice. See United States v. Doe (Schwartz), 457 F. 2d 895, 898-899; Bradford v. United States, 413 F. 2d 467, 471-472; cf. Gilbert v. California, 388 U. S. 263, 266-267. Consequently the Government was under no obligation here, any more than in Dionisio, to make a preliminary showing of ‘ ‘reasonableness. ’ ’
Indeed, this case lacks even the aspects of an expansive investigation that the Court of Appeals found significant in Dionisio. In that case, 20 witnesses were summoned to give exemplars; here there was only one. The specific and narrowly drawn directive requiring the witness to furnish a specimen of his handwriting violated no legitimate Fourth Amendment interest. The District Court was correct, therefore, in ordering the respondent to comply with the grand jury’s request.
Accordingly, the judgment of the Court of Appeals is reversed, and this case is remanded to that court for further proceedings consistent with this opinion.
It is so ordered.
The respondent contends that because he has seen neither the affidavit nor the writings in the grand jury's possession, the Government may actually be seeking “testimonial” communications — the content as opposed to the physical characteristics of his writing. But the Government’s petition for the order to compel production stated: “Such exemplars will be used solely as a standard of comparison in order to determine whether the witness is the author of certain writings.” If the Government should seek more than the physical characteristics of the witness’ handwriting — if, for example, it should seek to obtain written answers to incriminating questions or a signature on an incriminating statement — then, of course, the witness could assert his Fifth Amendment privilege against compulsory self-incrimination.

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 0