Is there any way of having sex without risking jail in the United States?
<p>I recently read a story about a <a href="http://www.cbsnews.com/news/indiana-teen-zach-anderson-labeled-sex-offender-after-sex-girl-lied-about-age/">19 years old boy sentenced to jail and to be registered as a sex offender for 25 years</a> for having sex with a 14 year old girl who lied about her age. The girl and her mother testified on behalf of the accused, saying that the sex was consensual and that she told him she was 17. Unfortunately, that didn't matter.</p>

<p>I read that if she showed him a fake ID so well done it's impossible to discern from a real ID, that wouldn't have mattered either. I also read that even with notarised written statements you will still be found guilty. (Curiously enough the reverse, ie propositioning sex to a person who is over the age of consent but lies saying they're younger, is also illegal)</p>

<p><a href="https://en.wikipedia.org/wiki/Radiocarbon_dating">Radiocarbon dating</a> for samples less than 100 years old is so unreliable it's basically useless. Even if the person looks very old, there are certain diseases that cause rapid ageing so they potentially are underage.</p>

<p>With all that in mind, is there any way to have sex on US soil without running the risk of being labeled a sex offender?</p>

<p>In many US states (and in the UK), statutory rape is a strict liability offense. This means that there is no intent requirement at all; the only allowable defenses are those that negate the actual act (there was no sex, the person was of age, or sometimes that the action was not a conscious or voluntary action), it falls within a statutory exception to the crime, or there is an applicable defense that has nothing to do with intent. Many general defenses do not apply to strict liability crimes; in particular, "I thought X when Y was true" tries to show there was to intent to commit the crime, which is irrelevant. </p>

<p>In Michigan (where the crime took place), statutory rape is evidently such an offense. That throws some standard defenses into doubt, because anything based on negating criminal intent doesn't matter. However, Michigan <em>does</em> specifically say that it is not criminal to have sex with a person under 16 if they are your legal spouse; this is a very common exception to statutory rape laws. So, marriage is a way to not risk jail for statutory rape in Michigan.</p>

<p>However, things do vary by state. In Indiana, it is specifically a defense that the defendant had a reasonable belief that the victim was over the age of consent (unless it was a forcible rape). </p>

united-states criminal-law