Can the government respond to a defense counsel's summation comments that impugned the integrity of the government's case?

Viewed in the context of the trial as a whole, the government's statements were permissible arguments about the merits of the defendant's theory of the case or were appropriate responses to defense counsel's own summation comments, which impugned the integrity of the government's case. See United States v. Carr, 424 F.3d 213, 227 (2d Cir. 2005) ("[T]he government is allowed to respond to an argument that impugns its integrity or the integrity of the case, and when the defense counsel have attacked the prosecutor's credibility or the credibility of the government agents, the prosecutor is entitled to reply with rebutting language suitable to the occasion." (internal quotation marks omitted)).

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