As before, I want to remind everyone that while I am a CA lawyer I have not done this kind of criminal work in a long time. The below represents my attempt to figure out the hypotheticals in light of what I know, but I make no guarantees as to its accuracy. For that you’d need a real criminal lawyer.
Neither. He would be convicted because he met the elements of §261(a)(3) or (4). To that he raised his affirmative defense of mistake of fact. Since he cannot meet that burden, his defense fails, and the underlying jury finding of rape stands. The fact that it would be rape had he succeeded is irrelevant (strictly speaking, you can attempt a crime that is not, in fact, possible), as is the fact that he subjectively lacked intent (because he needs to satisfy both subjective and objective intent).
Rundle is the case setting up the distinction between the specific intent crime of attempted rape and the general intent crime of rape. People v. Braslaw, 233 cal.app.4th 1239 (2015), which I cited earlier, explains that holding in the case of rape of an unconscious person.
No, he would be convicted. Age is a strict liability crime, so his intent is irrelevant. That means for attempted rape, he must only have the specific intent to have sex with the person. Consent is irrelevant and in fact his belief in consent would tend to prove his guilt. His belief that the age of consent law was different is also irrelevant. That is a mistake of law, not a mistake of fact, and generally mistakes of law are not admissible as defenses. Even if it were, it would by no means be a reasonable belief, and therefore would fail the objective prong of the affirmative defense of mistake.
Yes. Ignorance of the law is still not sufficient for a mistake defense, since it is not a mistake of fact. If a person has sex with an unconscious person, thinking it was legal is not a defense. Thinking the other person was conscious might be, if the accused actually believed it and the belief was reasonable (hard to see how it would be but it’s possible). If the person was tried for attempt, however, the prosecution must show more than the specific intent to have sex. Instead, the prosecution must show the intent to have sex, the intent to have it against the will of the victim, and that the person was unconscious. See People v. Braslaw, 233 Cal.App.4th 1239, 1249 (2015).
Legally speaking, it probably isn’t. Practically speaking, it’s the man’s responsibility.
This is correct (cal penal code 261.5), and interestingly it applies to both parties. Having sexual intercourse with a minor who is nevertheless 4 years older than you is a felony (although practically speaking the younger person would probably not be charged).