One Citizen, One Seat Act

This bill would require the U.S. Census Bureau to count only U.S. citizens, not all residents, when tabulating state populations for congressional apportionment based on the 2020 census. It mandates that states use this revised citizen-only count for determining congressional seats and all other purposes where they previously used total population data. States would lose federal grants if they do not adopt this revised count within 60 days of receiving it from the Commerce Secretary. The bill directly affects all 50 states by changing how they calculate representation and eligibility for federal funding tied to population data.