1. Federal Registration Form:
   
   
   • The federal voter registration form, which is accepted in all states, does not mandate applicants to provide documentation proving their citizenship.
   • Instead, individuals attest under penalty of perjury that they are citizens and eligible to vote when completing the form 1.
     
     
2. Supreme Court Ruling:
   
   
   • In a 2013 Arizona voting case, the U.S. Supreme Court ruled that states must permit registration for federal elections using the federal form, even if it lacks a requirement for documentary proof of citizenship.
   • While states may have their own registration forms, they must be willing to accept the federal form without additional citizenship documentation 1.

When people register to vote, they sign a form attesting under penalty of perjury that they are a citizen and eligible to vote.