I believe that cartoon images depicting sex of underage kids is still illegal. At least in the US.
Feel free to correct me if I am wrong but seems like I remember this from a news article a while back. Maybe it was just a specific state.
I am not going to Google that one though to find out though.
The US government now uses it to charge people indiscriminately. I see the term in my local headlines once a month, at least, where someone gets tagged with this BS charge.
As one person said I used to think ‘dear God they must have a nuke in the basement’ but anymore you find out the person just had a sawed off shotgun or possibly the parts for a homemade silencer and a prosecutor got an instant hard on.