e enforceability of such waivers. See, e.g., United States v. Grillo, No. 99-1514, 1999 WL 1456536, at *2 (3d Cir. July 13, 1999); United States v. Salvagno, 314 F. Supp. 2d 115, 119 (N.D.N.Y. 2004); United States v. Karni, 298 F. Supp. 2d 129, 132-33 (D.D.C. 2004); United States v. Chen, 820 F. Supp. 1