my guess is that, since the american president came out against it, it can't become law.  poser sites would mostly be affected by blue laws, but as in the case of computer-generated kiddie porn (COPA), we've seen that these laws can be struck down, if enacted. IIRC this site (and possibly other poser sites) already have a rule that those posting images here do so under the condition that they allege or aver that they own copyright. I ain't a lawyer.