@hideki @cirno usa has obscenity law and especially in the case of the Nevermind album art, it has artistic value to represent a work; im guessing the simpsons could be argued to have parodic/political value
the reason lolicon isnt oft prosecuted against is because the justice system knows its opening a can of worms with those subjective meanings of "artistic" and "political value", so they really dont press charges except for people who have actual cp as well, or for people who are known to rape kids