All 50 states have laws that require people to be U.S. citizens in order to register to vote in federal elections, but none of them require documentary evidence of U.S. citizenship in order to do so. Several states, including Arizona and Georgia, tried to implement such a requirement, but they were blocked by court rulings backed by the Obama administration. A Ph.D.-vetted study by Just Facts found that non-citizens may have cast enough illegal votes for Joe Biden to overturn the lawful election results in Arizona and Georgia. With funding from Facebook, USA Today published a "fact check" of this study. This so-called fact check contains 10 misrepresentations, unsupported claims, half-truths, and outright falsehoods.