To comport with the First Amendment and Due Process in determining whether an image of a child acting innocently constitutes child pornography, must courts apply a "limited context" test, rather than expand their inquiry to unconstrained "context" or restrict their inquiry to the image itself?

Whether courts must apply a 'limited context' test rather than an expansive 'context' test or a 'four corners' test in determining whether an image of a child acting innocently constitutes child pornography under the First Amendment and Due Process