Article I, Section 2 of the Constitution requires the Census to count "the whole Number of free Persons" in each state for the purpose of distributing House seats. The 14th Amendment updated this to "counting the whole number of persons in each State." The word is persons. Not citizens. Not voters. Persons.
The Census Bureau follows this instruction. Every ten years, it counts everyone physically present in the United States - citizens, legal residents, visa holders, and illegal immigrants. The 435 House seats are then redistributed among the 50 states based on the total count. Each House seat carries one Electoral College vote.
A state with more illegal immigrants gets more House seats. A state with fewer gets less. The transfer is automatic. No vote is cast. No ballot is forged. No law is violated. The seats simply move.
The Numbers
The Center for Immigration Studies analyzed Census data and found that immigrant-driven population growth - including illegal immigrants, legal immigrants, and their descendants - shifted 26 House seats between states.[1]
| State | Seats Gained | Foreign-Born % | Presidential Vote (2024) |
|---|---|---|---|
| California | +8 | 26.6% | Democratic |
| Texas | +3 | 17.1% | Republican |
| New York | +3 | 22.6% | Democratic |
| Florida | +2 | 21.2% | Republican |
| New Jersey | +2 | 23.0% | Democratic |
| Illinois | +1 | 13.8% | Democratic |
| Rhode Island | +1 | 14.2% | Democratic |
The states that lost seats include Ohio (-2), and one seat each from Indiana, Iowa, Kentucky, Louisiana, Michigan, Missouri, Oklahoma, Pennsylvania, Tennessee, Utah, West Virginia, and others.[1] The overwhelming majority are Republican-voting states.
California has 8 House seats it would not have if only citizens were counted. Those are 8 Electoral College votes that go to the Democratic candidate in every presidential election. In 1970, the state was 76.3% Caucasian. Today it is 34.7%.[6] The demographic transformation and the seat gains were driven by the same immigration.
The Conservative Estimate
Pew Research Center used a narrower methodology - counting only illegal immigrants rather than all immigration-driven population growth. Their analysis estimated that approximately 3 House seats shifted due specifically to the illegal immigrant population counted in the 2020 Census.[2]
The difference between 26 and 3 depends on what you measure. CIS counts the total population growth attributable to post-1965 immigration, including the children and grandchildren of immigrants. Pew counts only the illegal immigrants themselves. Both methodologies confirm the same mechanism. The disagreement is about scale, not about whether it happens.
Even 3 seats is significant. In a closely divided House, 3 seats determine the majority. In a close presidential election, 3 Electoral College votes can determine the outcome.
How It Works in Practice
The mechanism is simple. California has an estimated 1.8 to 2.2 million illegal immigrants.[3] Texas has 1.6 to 1.7 million. Florida has roughly 800,000. New York has roughly 600,000.
These populations are counted in the Census. They increase the state's total population. The state receives more House seats in the next reapportionment cycle. The seats are filled by elections in which illegal immigrants cannot legally vote - but the seats exist because illegal immigrants are present.
In California, 8 of its 52 House seats are attributable to immigration-driven population growth.[1] All 52 seats are elected by voters. 8 of those seats would not exist without the non-citizen population that the Census counted. The representation belongs to California. The people who created it cannot vote.
No Other Country Does This
Germany apportions its Bundestag seats based on German citizen population only - the Federal Constitutional Court confirmed this in 2012. The United Kingdom apportions constituencies based on registered voters, and non-citizens cannot register for parliamentary elections. Japan uses citizen counts for Diet apportionment.
France and Canada, like the United States, use total population. The difference is scale. France has roughly 300,000-400,000 illegal immigrants. Canada has fewer. The United States has 14 million.[3] In no other country does the gap between total population and citizen population distort apportionment to the degree it does in the United States.
Congress could change this. The Equal Representation Act (H.R. 7109) passed the House in May 2024 on a party-line vote. It would require a citizenship question on the Census and apportion seats based on citizen population starting with the 2030 Census.[7] The Senate never voted on it. Missouri filed a federal lawsuit in January 2026 arguing that counting illegal immigrants in apportionment violates the 14th Amendment.
In 2019, the Trump administration attempted to add a citizenship question to the Census. The Supreme Court blocked it in Department of Commerce v. New York on procedural grounds - not because the question itself was unconstitutional, but because the administration's stated rationale was pretextual.[5] A future administration with a better-constructed legal argument could succeed.
The Structural Incentive
The current system creates a perverse incentive. States that attract or tolerate large illegal immigrant populations are rewarded with more House seats and more Electoral College votes. States that enforce immigration law or have smaller illegal populations lose representation.
California's 11 extra seats are 11 extra Electoral College votes in every presidential election. They go to the Democratic candidate every time. New York's 4 extra seats work the same way. New Jersey's 2 extra seats work the same way.
The states that lost those seats - Ohio, Michigan, Pennsylvania, West Virginia, Alabama - are states where immigration enforcement is stricter and illegal populations are smaller. These states did not choose to have fewer representatives. They lost representation because other states attracted more non-citizens.
26 seats. 26 Electoral College votes. Transferred from the interior to the coasts. From Republican states to Democratic states. Without a single ballot.
Sources
- Center for Immigration Studies, "Immigrants and Congressional Apportionment"
- Pew Research Center, "What the 2020 Census Tells Us About the Impact of Immigration on Representation," 2022
- Migration Policy Institute, "Profile of the Unauthorized Population: United States"
- U.S. Constitution, Article I, Section 2; 14th Amendment, Section 2
- Department of Commerce v. New York, 588 U.S. 752 (2019)
- U.S. Census Bureau, American Community Survey, State-Level Demographics
- Congressional Research Service, "Apportionment and Redistricting Following the 2020 Census"