The Citizen Ballot Protection Act would amend federal voter registration law to allow states to require proof of citizenship from people registering to vote by mail. Currently, the National Voter Registration Act of 1993 sets national standards for mail voter registration forms, and this bill would give states the flexibility to add citizenship verification requirements beyond those federal standards. The legislation affects any state that chooses to implement this requirement and would apply to all mail voter registration forms going forward. The bill takes effect immediately upon enactment and contains no specific funding provisions or timelines for implementation. The bill was introduced in December 2023 and referred to the Senate Committee on Rules and Administration.