Requires the Census Bureau to add a citizenship checkbox for every person on the population questionnaire starting with the 2030 decennial census and to publish state-level counts of citizens and noncitizens within 120 days after each census. It also changes the apportionment rule so that noncitizens are excluded from the population totals used to allocate U.S. House seats and Electoral College votes, beginning with the apportionment based on the 2030 census. The bill includes a severability clause so the rest stays in force if part is found unconstitutional.