Is a prosecutor entitled to remind the jury of the fact that a witness has been convicted of perjury?

Although a prosecutor should not vouch for a witness's truthfulness, see United States v. Carr, 424 F.3d 213, 227 (2d Cir.2005), it is not improper to point to evidence indicating a witness's awareness of a particular adverse consequence of testifying falsely, beyond the risk of perjury applicable to all witnesses. See, e.g., United States v. ArroyoAngulo, 580 F.2d 1137, 1147 (2d Cir.1978) (lying risked loss of sentence reduction in cooperation agreement). Hussain had testified that he feared he would be deported if he was convicted of perjury, and the prosecutor was entitled to remind the jury of that testimony.