The U.S. Copyright Office has published the second part of its report on AI copyrightability, highlighting ongoing legal challenges surrounding the use of copyrighted materials for training artificial intelligence. A notable case involves Meta, which is facing a lawsuit for allegedly using 82 terabytes of pirated books to train its AI models. Recent court rulings, particularly from Judge Bibas in the Third Circuit, have determined that using copyrighted materials, such as Westlaw headnotes, to train AI does not qualify as fair use. This decision may have broader implications for generative AI companies, as it suggests that many arguments for fair use in AI training could be deemed irrelevant. The legal landscape continues to evolve, with the potential for more lawsuits as the intersection of AI technology and copyright law is scrutinized.