579 F.2d 508, 509 (9th Cir.1978): We have consistently held that a defendant’s plea of guilty conclusively admits all factual allegations of the indictment. “The effect is the same as if appellant had been tried before a jury and had been found guilty on evidence covering all of the material facts.” United States v. Davis, 452 F.2d 577, 578 (9th Cir.1971). See also United States v. Harris, 108 F.3d 1107, 1108 (9th Cir.1997) (plea admits factual basis for jurisdiction); United States v. Kelly, 62 F.3d 1215, 1216 (9th Cir.1995) (“Kelly pleaded guilty, however, thereby admitting all elements of the crimes charged against him, including the fact that he was a felon.”); United States v. Kidder, 869 F.2d 1328, 1332-33 (9th Cir.1989) (“A guilty plea is an admission 177-78 (3d Cir.1989) (<HOLDING>); cf. United States v. Hoyle, 33 F.3d 415, 419
recognizing that a voluntary and understanding guilty plea entered without the benefit of a plea bargain waives all nonjurisdictional defects that occurred before the entry of the plea holding entry of guilty plea waives challenges to the deprivation of constitutional rights that occurred prior to the entry of the guilty plea  emphasis added holding entry of a guilty plea waives all nonjurisdictional issues holding that where indictment and plea agreement specified value of packages taken entry of guilty plea conclusively established value for purposes of sentencing holding that guilty plea to indictment charging distribution of 1000 marijuana plants did not establish amount of marijuana involved for sentencing purposes where defendant had specifically reserved the issue on entering his plea