system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: US Prostitution laws. Why is it illegal to pay someone for sex unless a camera is involved? It seems that porn is just simply filming a crime. What if this was done with other crimes? If I film people doing drugs would anyone get in trouble?
gpt
Porn is art, and you're allowed to pay artistic performers. They're not getting paid for the sex, they're getting paid for the role. The role, if they want it, requires a sexual performance. 

It's not at all like filming someone doing drugs, as drugs are illegal and sex is mostly not illegal.