An excerp from the actual injunction filed by the FSC. I think (imho) the most important part of the ijunction in this section:
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"The records that producers are required to maintain by 18 U.S.C. §2257, including copies of visual depictions containing actual sexually explicit conduct ... may be used against a person accused of violating the obscenity laws contained in Chapter 71 of Title 18 of the United States Code, and the child pornography laws contained in Chapter 110 of Title 18 of the United States Code," the lawsuit notes. "The Fifth Amendment of the United States Constitution prohibits the government from compelling a person to be a witness against himself."

Therefore, "The obligation to maintain records of the production of visual depictions of actual sexually explicit conduct imposed on a producer by 18 U.S.C. §2257 and its regulations compels the producer to collect evidence that the government is authorized to use against him in a prosecution for a claimed violation of Chapter 71 or Chapter 110 of Title 18."