Clarifies when a person "knowingly produces" child pornography by adding specific interstate or foreign-commerce connections and updates cross-references in the federal child‑pornography statute. Strengthens enforcement against obscene visual representations of child sexual abuse by removing the time limit for prosecution, requiring sex‑offender registration for these offenses, restricting reproduction and access to such images in criminal proceedings, creating a presumption of detention pending trial, and providing for supervised release following imprisonment.