tent and general intent “has been the source of a good deal of confusion.” Bailey, 444 U.S. at 403, 100 S.Ct. 624. The practical difference between these two levels of mental culpability is that certain defenses, such as voluntary intoxication and subjective mistake of fact, can negate culpability only for specific intent crimes. See, e.g., Burdeau, 168 F.3d at 358 (voluntary intoxication); United States v. Leon-Leon, 35 F.3d 1428, 1432-33 (9th Cir.1994) (holding that mistake of fact as to permission to reenter the United States is not a defense to general intent crime of illegal reentry under 8 U.S.C. § 1326); 1 LaFave & Scott, supra, §§ 3.5(e), 4.10(a), 5.1(b), at 315, 552-53, 577-79.11
The confusion between general and specific intent has been the catalyst for a movement to replace these categories with a hierarchy of four levels of culpable states of mind, defined with greater clarity: purpose, knowledge, recklessness and negligence. See Bailey, 444 U.S. at 404, 100 S.Ct. 624; Model Penal Code & Commentaries, supra, § 2.02, at 225-26; see also 1 LaFave & Scott, supra, § 3.4(c), at 299-300. This movement is best exemplified in the Model Penal Code, which the Supreme Court has relied upon as a “source of guidance ... to illuminate” the meaning of and distinctions between intent requirements. United States v. United States Gypsum Co., 438 U.S. 422, 444, 98 S.Ct. 2864, 57 L.Ed.2d 854 (1978). In general, “purpose” corresponds to the concept of specific intent, while “knowledge” corresponds to general intent. See Bailey, 444 U.S. at 405, 100 S.Ct. 624; Model Penal Code & Commentaries, supra, § 2.02 cmt. at 233-34. A person who causes a result prohibited by common law or statute is said to have acted purposely if he or she consciously desired that result, whatever the likelihood of that result ensuing from his or her actions. See Bailey, 444 U.S. at 404, 100 S.Ct. 624; United States Gypsum, 438 U.S. at 444, 98 S.Ct. 2864; Model Penal Code & Commentaries, supra, § 2.02, at 225.
Applying these principles to the present case, we hold the elements of the crime of attempted illegal reentry into the United States under 8 U.S.C. § 1326 are: (1) the defendant had the purpose, i.e., conscious desire, to reenter the United States without the express consent of the Attorney General; (2) the defendant committed an overt act that was a substantial step towards reentering without that consent; (3) the defendant was not a citizen of the United States; (4) the defendant had previously been lawfully denied admission, excluded, deported or removed from the United States; and (5) the Attorney General had not consented to the defendant’s attempted reentry. See United States v. Davis, 960 F.2d 820, 826-27 (9th Cir.1992) (enumerating the elements of attempt); Arbelaez, 812 F.2d at 534 (same); Model Penal Code & Commentaries, supra, § 5.01 cmt. at 301 (“The general principle is thus that the actor must affirmatively desire to engage in the conduct or to cause the result that will constitute the principal offense.”); see also United States v. Sotelo, 109 F.3d 1446, 1447 (9th Cir.1997) (concluding that a lawful prior deportation is element of crime of illegal reentry under 8 U.S.C. § 1326).
We conclude the district court committed constitutional error by failing to instruct the jury on the specific intent element of the crime. See United States v. Fei Lin, 139 F.3d 1303, 1309 (9th Cir.1998) (holding that failure to instruct as to specific intent is constitutional error); Martinez v. Borg, 937 F.2d 422, 423 (9th Cir.1991); see also United States v. Gaudin, 515 U.S. 506, 510, 115 S.Ct. 2310, 132 L.Ed.2d 444 (1995) (concluding that Due Process Clause and Sixth Amendment re
11
As we recognized in Pena-Cabanillas, however, "[e]ven in a crime requiring no specific intent, a defendant may defend upon the ground that he did no voluntary act: that he was asleep or unconscious at the time an act occurred.'' 394 F.2d at 788 n. 2; see also Carter, 530 U.S. at -, 120 S.Ct. at 2169 (noting that sleepwalking would be a defense to 18 U.S.C. § 2113(a) even if it were a general intent crime).