Page:Brief for the United States, Wong Sun v. United States, 371 U.S. 471 (1963).djvu/63

 The trial court was not required to give credence to Yee's testimony that Wong Sun had not been at his house, for this testimony was impeached by Yee's own admission on the stand that he had given a contrary statement on June 9, under oath, that Wong Sun and Toy had come to his house on the night of June 1 and again on the night of June 3—the nights specified in Wong Sun's confession.

In sum, the 27 grams of heroin surrendered by Yee at Yee's house on June 4 itself attested that narcotics had been transported to the house—narcotics that cannot be legally imported and for the manufacture of which no opium can be legally imported. Wong Sun's confession, shown to be reliable by several aspects of evidence aliunde, stated that the heroin had been brought by him and Toy. Moreover, in transporting the heroin, Wong Sun was necessarily