There is a huge demand in various places for child prostitutes, too.
Yes, there is. And when those places fall outside of the US, the US Congress has ZERO authority to attempt to legislate against it, nor is the justice department empowered to prosecute those engaged in it.
When it falls within the US, the justice depart can use its full force to prosecute as it is envolving minors who can not legally provide consent.
Porn, that is the topic of this thread is composed of ADULT participants. We are not talking about child porn.