This bill requires voters to provide documentary proof of U.S. citizenship—such as a birth certificate, passport, or other government-issued documents—when registering to vote. States must use government databases to check citizenship, notify and remove flagged noncitizens unless proof is provided. For voting in federal elections, all voters must present a photo ID in person. When voting by mail, voters must send copies of both a photo ID and proof of citizenship, unless their citizenship has already been confirmed. If citizenship isn’t confirmed by Election Day, voters can cast a provisional ballot that is only counted if citizenship is later verified. Election officials who don’t enforce these rules may face penalties.