The General Data Protection Regulation of the European Union came into full effect May 2018. The most visible impact of GDPR has been a cascade of cookie approvals and subscription confirmations to conform with the law. But what does a regulation in the EU mean for American public libraries? How does GDPR differ from U.S. laws, and how does it embody some of the best aspirations of libraries? This presentation offers a summary of important take-aways from GDPR for U.S. public library.