If an indictment is dismissed because of legal defect or grand jury irregularity, the government may return a new indictment within six months of the date of dismissal or within the original limitation period (whichever is later). After the original limitation period has expired, a superseding indictment may narrow, but not broaden, the charges made in the original indictment. See 18 U.S.C. §§ 3288-3289; United States v. Miller, 471 U.S. 130 (1985); United States v. Grady, 544 F.2d 598 (2d Cir. 1976).
[cited in USAM 9-18.000]