States would lose House seats if census excludes unauthorized immigrants

By the numbers: If unauthorized immigrants were not included, California would have a net loss of two seats instead of one. Florida would gain one instead of two, and Texas would gain two instead of three.

• Alabama, Minnesota and Ohio would each hold onto a seat that they would have lost if allotment were based only on total population change.

The state of play: The U.S. has counted both citizens and noncitizens since its first survey in 1790. It excludes foreign tourists and business travelers in the country temporarily.

• The District of Columbia, Puerto Rico and U.S. Island area populations are also left out because they don't have voting representation in Congress.
• Military and civilian federal employees stationed abroad and their dependents are counted if they provide their state address in employment records.

Flashback: Trump ordered the Census Bureau to assemble a separate database on the citizenship status of every U.S. resident after the U.S. Supreme Court ruled against including a question about citizenship on the 2020 Census.