 Section 2257 of the Child Protection and Obscenity Enforcement Act requires those who create sexually explicit materials to maintain records of their model's age and identities, as a measure against child pornography.Connection Distributing, a publisher of swinging magazines, challenged the constitutionality of the statute, as individuals who posted on Connection's magazines would also be required to create and maintain such records, and provide them to the publisher.In 2009, the Sixth Circuit ruled en banc that the provisions were not unconstitutional, while a panel of the court had decided in 2007 that the statute violated the First Amendment.