The U.S. Copyright Office requires libraries to lie about fair use rights: https://scholarlykitchen.sspnet.org/2023/07/05/why-does-the-u-s-copyright-office-require-libraries-to-lie-to-users-about-their-fair-use-rights-they-wont-say/

Discussion: http://news.ycombinator.com/item?id=36606323