The following excerpt is from U.S. v. Rocha-Lopez, 977 F.2d 593 (9th Cir. 1992):
We review de novo whether a criminal defendant has waived his statutory right to appeal. United States v. Bolinger, 940 F.2d 478, 479 (9th Cir.1991); United States v. Navarro-Botello, 912 F.2d 318, 320 (9th Cir.1990), cert. denied, 112 S.Ct. 1488 (1992). "[A]n express waiver of the right to appeal in a negotiated plea of guilty is valid if knowingly and voluntarily made." Bolinger, 940 F.2d at 480.
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