This bill, titled the Citizen Ballot Protection Act, proposes an amendment to the National Voter Registration Act of 1993. Its central provision allows states to require applicants to provide proof of United States citizenship when submitting a mail voter registration form for federal elections. The legislation specifically modifies Section 6(a) of the NVRA, enabling states to add this citizenship verification requirement. This change would empower states to implement stricter controls over voter registration eligibility, taking effect immediately upon the bill's enactment.