opinion: MASCIALE v. UNITED STATES.
  No. 84.
  Argued January 16, 1958.
  Decided May 19, 1958.
  Merrell E. Clark, Jr. argued the cause and filed a brief for petitioner.
  James W. Knapp argued the cause for the United States. On the brief were Solicitor General Rankin, Warren Olney, III, then Assistant Attorney General, Beatrice Rosenberg and Robert G. Maysack.
  Mr. Chief Justice Warren
  delivered the opinion of the Court.
  This case presents the same issue as Sherman v. United States, ante, p. 369, decided this day: Should petitioner’s conviction be set aside on the ground that as a matter of law the defense of entrapment was established? Cf. Sorrells v. United States, 287 U. S. 435. Petitioner was convicted on three counts, two of which charged him with the illegal sale of narcotics and one with conspiracy to make a sale. The issue of entrapment went to the jury, and conviction followed. The Court of Appeals for the Second Circuit affirmed. 236 F. 2d 601. We granted "certiorari. 352 U. S. 1000.
  The evidence discloses the following events. On January 14, 1954, petitioner was introduced to government agent Marshall by a government informer, Kowel. Although petitioner had known Kowel for approximately four years, he was unaware of Kowel’s undercover activities. Marshall was introduced as a big narcotics buyer. Both Marshall and petitioner testified concerning the ensuing conversation. Marshall testified that he immediately made it clear that he wanted to talk about buying large quantities of high-grade narcotics and that if petitioner were not interested, the conversation would end at once. Instead of leaving, petitioner questioned Marshall on his knowledge of the narcotics traffic and then boasted that while he was primarily a gambler, “he knew someone whom he considered high up in the narcotics traffic to whom he would introduce me [Marshall] and that I was able to get — and I can quote this — ‘88 per cent pure heroin’ from this source.” Marshall also stated that petitioner gave him a telephone number where he could be reached. In his testimony petitioner admitted that he was a gambler and had told Marshall that through his gambling contacts he knew about the narcotics traffic. He denied that he had then known any available source of narcotics or that he said he could obtain narcotics for Marshall at that time. Petitioner explained that he met Marshall only to help Kowel impress Marshall. Petitioner also said that it was Marshall who gave him the telephone number. It is noteworthy that nowhere in his testimony did petitioner state that during the conversation either Marshall or Kowel tried to persuade him to enter the narcotics traffic. In the six weeks following the conversation just related Marshall and petitioner met or spoke with each other at least ten times; petitioner kept telling Marshall that he was trying to make his contact but was having trouble doing so. Finally, on March 1, 1954, petitioner introduced Marshall to Seifert, who sold some heroin to Marshall on the next day. Petitioner even loaned his sister’s car to Seifert in order to get the narcotics. It was this sale for which petitioner was convicted.
  In this case entrapment could have occurred in only one of two ways. Either Marshall induced petitioner, or Kowel did. As for Marshall, petitioner has conceded here that the jury could have found that when petitioner met Marshall he was ready and willing to search out a source of narcotics and to bring about a sale. As for Kowel, petitioner testified that the informer engaged in a campaign to persuade him to sell narcotics by using the lure of easy income. Petitioner argues that this undisputed testimony explained why he was willing to deal with Marshall and so established entrapment as a matter of law. However, his testimony alone could not have this effect. While petitioner presented enough evidence for the jury to consider, they were entitled to disbelieve him in regard to Kowel and so find for the Government on the issue of guilt. Therefore, the trial court properly submitted the case to the jury.
  The judgment of the Court of Appeals is
  Affirmed.
  See 26 U. S. C. §§2553 (a), 2554 (a); 21 U. S. C. § 174, and 18 U. S. G. § 2.
  The charge to the jury was not in issue here.
  Well might petitioner concede this, for despite petitioner’s version of the meeting and his explanation for being there, the jury could have believed Marshall and have inferred from his narration that petitioner needed no persuasion to seek a narcotics buyer.
  We conclude from the argument that neither party even attempted to subpoena Kowel.
  For the reasons stated in Sherman v. United States, ante, p. 369, we decline to consider the contention that this case should be reversed and remanded to the District Court for a determination of the issue of entrapment by the trial judge. This issue was never raised by the parties. The question of entrapment was submitted to the jury, and the charge to the jury was not put in issue by petitioner either here or in the Court of Appeals.
choices: involuntary confession habeas corpus plea bargaining: the constitutionality of and/or the circumstances of its exercise retroactivity (of newly announced or newly enacted constitutional or statutory rights) search and seizure (other than as pertains to vehicles or Crime Control Act) search and seizure, vehicles search and seizure, Crime Control Act contempt of court or congress self-incrimination (other than as pertains to Miranda or immunity from prosecution) Miranda warnings self-incrimination, immunity from prosecution right to counsel (cf. indigents appointment of counsel or inadequate representation) cruel and unusual punishment, death penalty (cf. extra legal jury influence, death penalty) cruel and unusual punishment, non-death penalty (cf. liability, civil rights acts) line-up discovery and inspection (in the context of criminal litigation only, otherwise Freedom of Information Act and related federal or state statutes or regulations) double jeopardy ex post facto (state) extra-legal jury influences: miscellaneous extra-legal jury influences: prejudicial statements or evidence extra-legal jury influences: contact with jurors outside courtroom extra-legal jury influences: jury instructions (not necessarily in criminal cases) extra-legal jury influences: voir dire (not necessarily a criminal case) extra-legal jury influences: prison garb or appearance extra-legal jury influences: jurors and death penalty (cf. cruel and unusual punishment) extra-legal jury influences: pretrial publicity confrontation (right to confront accuser, call and cross-examine witnesses) subconstitutional fair procedure: confession of error subconstitutional fair procedure: conspiracy (cf. Federal Rules of Criminal Procedure: conspiracy) subconstitutional fair procedure: entrapment subconstitutional fair procedure: exhaustion of remedies subconstitutional fair procedure: fugitive from justice subconstitutional fair procedure: presentation, admissibility, or sufficiency of evidence (not necessarily a criminal case) subconstitutional fair procedure: stay of execution subconstitutional fair procedure: timeliness subconstitutional fair procedure: miscellaneous Federal Rules of Criminal Procedure statutory construction of criminal laws: assault statutory construction of criminal laws: bank robbery statutory construction of criminal laws: conspiracy (cf. subconstitutional fair procedure: conspiracy) statutory construction of criminal laws: escape from custody statutory construction of criminal laws: false statements (cf. statutory construction of criminal laws: perjury) statutory construction of criminal laws: financial (other than in fraud or internal revenue) statutory construction of criminal laws: firearms statutory construction of criminal laws: fraud statutory construction of criminal laws: gambling statutory construction of criminal laws: Hobbs Act; i.e., 18 USC 1951 statutory construction of criminal laws: immigration (cf. immigration and naturalization) statutory construction of criminal laws: internal revenue (cf. Federal Taxation) statutory construction of criminal laws: Mann Act and related statutes statutory construction of criminal laws: narcotics includes regulation and prohibition of alcohol statutory construction of criminal laws: obstruction of justice statutory construction of criminal laws: perjury (other than as pertains to statutory construction of criminal laws: false statements) statutory construction of criminal laws: Travel Act, 18 USC 1952 statutory construction of criminal laws: war crimes statutory construction of criminal laws: sentencing guidelines statutory construction of criminal laws: miscellaneous jury trial (right to, as distinct from extra-legal jury influences) speedy trial miscellaneous criminal procedure (cf. due process, prisoners' rights, comity: criminal procedure)