The age of consent to have sexual intercourse is under 18 in many states. It's as low as 16 in some places like Nevada and the Deep South.
However, that does not affect the child-pornography statutes, which protect children of less than 18 throughout the country.
I swear I see a little black dot (i.e. age of consent is 9 years old) about where San Francisco is on the map. What’s their favorite saying? “Get em at 8 and you’re too late!”?