Does Counting Non-Citizens in the Census Skew Congressional Power to Blue States? What the Data Shows

Every ten years, the federal government conducts a constitutional ritual that quietly reshapes the American political landscape: the decennial enumeration of the nation's populace ^{[3], [8]}. Mandated by Article I, Section 2 of the United States Constitution and refined by the Fourteenth Amendment, this headcount dictates the distribution of the 435 voting seats in the U.S. House of Representatives, the corresponding allocation of votes in the Electoral College, and the formulaic distribution of more than $1.5 trillion in annual federal grant funding to states and localities ^{[3], [9], [11]}.

In modern political warfare, however, the census has evolved from an administrative accounting exercise into a fierce constitutional battleground ^{[2], [12]}. Throughout his political career and continuing into his second administration, President Donald Trump has consistently denounced the long-standing practice of counting non-citizens—both lawful permanent residents and unauthorized immigrants—in the apportionment base ^{[12], [13]}. In public addresses and campaign platforms, President Trump has asserted that counting non-citizens allows progressive states to "steal" representation from citizen taxpayers, creating a "rigged" electoral architecture where sanctuary cities accumulate legislative power based on populations that cannot legally cast a ballot ^{[2], [12]}.

This argument gained formal legislative muscle when the House of Representatives passed the Equal Representation Act (H.R. 7109), sponsored by Representative Chuck Edwards and Senator Bill Hagerty ^{[2], [14]}. The legislation mandates the inclusion of a mandatory citizenship question on the decennial census and directs the Census Bureau to exclude all non-citizens from the population totals used to apportion congressional seats and presidential electors ^{[2], [14]}. Proponents argue that representative democracy exists to reflect the sovereign citizenry, and that counting disenfranchised non-citizens dilutes the voting power of citizens living in states with low immigrant populations, such as West Virginia, Iowa, or Alabama ^{[2], [7]}.

To evaluate these claims, The Dispatch conducted an exhaustive empirical investigation into the mathematical mechanics of congressional apportionment, analyzing decennial data from the U.S. Census Bureau, simulation models from the Pew Research Center, immigration demographic tracking from the Cato Institute, and constitutional jurisprudence spanning from the 1866 Reconstruction debates to the Supreme Court's decisions in Evenwel v. Abbott and Trump v. New York ^{[1], [3], [6], [10], [13]}. The data demonstrates that while conservative critics highlight legitimate, systemic discrepancies in individual voting weight, their primary thesis—that non-citizen enumeration delivers a massive, one-sided partisan windfall to the Democratic Party—is decisively refuted by demographic geography ^{[1], [4], [6]}.

The Statutory Engine: How Apportionment Actually Works

To understand whether non-citizens "steal" congressional seats, one must examine the mathematical engine established by Congress to divide the House of Representatives ^{[3], [8]}. Under the Apportionment Act of 1941, codified at 2 U.S.C. § 2a, House seats are distributed among the fifty states using the Method of Equal Proportions (also known as the Huntington-Hill algorithm) ^{[3], [8]}.

Because the total size of the House has been capped at 435 members since 1929, congressional representation is an absolute zero-sum game ^{[3], [8]}. Every state is constitutionally guaranteed a minimum of one seat (occupying seats 1 through 50) ^[8]. The remaining 385 seats are distributed sequentially based on a calculated priority value $A_n$, where a state's total apportionment population $P$ is divided by the geometric mean of its current seat count $n-1$ and its prospective seat count $n$:

$$A_n = \frac{P}{\sqrt{n \times (n - 1)}}$$ — Title 2, United States Code, Section 2a (Huntington-Hill Formula)

The Census Bureau calculates these priority values for all fifty states up to seat 435, sorting them in descending order ^[3]. In the certified 2020 Census apportionment, the 435th and final seat went to Minnesota's 8th District, which edged out New York for its 27th seat by a razor-thin margin of just 89 people ^{[3], [5]}. Other marginal seats near the cutoff included Montana's 2nd seat (#434) and Alabama's 7th seat (#433), while the first seats to miss the allocation were New York (#436), Ohio (#437), Texas (#438), and Florida (#439) ^{[3], [5]}.

Because priority values depend entirely on population ratios, removing any demographic group from the state totals changes the ranking of every single priority value across the entire nation ^{[1], [3]}. If millions of non-citizens are subtracted from the national count, states with low immigrant concentrations see their relative priority values rise, while states with high immigrant concentrations see their values fall ^{[1], [7]}.

What the Data Shows: Simulating Apportionment Without Non-Citizens

The central pillar of the conservative argument is that counting non-citizens transfers power directly from conservative red states to progressive blue states ^{[2], [7], [14]}. To test this hypothesis, demographers and statistical institutions have modeled what the 435-seat map would look like under two distinct exclusion scenarios: excluding unauthorized immigrants only, and excluding all non-citizens entirely ^{[1], [4], [5], [7]}.

Scenario A: Excluding Unauthorized Immigrants

In a landmark 2020 demographic analysis, the Pew Research Center utilized American Community Survey (ACS) microdata and established demographic residual methodologies to simulate the 2020 decennial apportionment if the estimated 10.5 to 11.0 million unauthorized immigrants had been excluded from state totals ^{[1], [4]}. The results directly contradict the narrative of a conservative sweep ^[1]:

• States Losing Seats: Under this scenario, exactly three states would have lost one congressional seat each compared to their certified 2020 allocations: California (which would have lost two seats instead of one), Texas (which would have gained only one seat instead of two), and Florida (which would have gained zero seats instead of one) ^{[1], [4]}.
• States Gaining Seats: The three seats forfeited by California, Texas, and Florida would have been redistributed to Alabama (which would have comfortably preserved its 7th seat), Ohio (which would have retained its 16th seat instead of losing it), and Minnesota (which would have secured its 8th seat by tens of thousands of residents rather than 89) ^{[1], [5]}.
• Net Partisan Shift: Of the three states losing a seat, one is solidly Democratic (California) and two are solidly Republican (Texas and Florida) ^{[1], [4]}. Of the three states gaining a seat, one is Republican (Alabama), one is right-leaning/battleground (Ohio), and one is left-leaning/battleground (Minnesota) ^[1]. On balance, the net partisan shift in the 435-member House would have been zero to plus-one seat for Republicans—an outcome entirely negligible compared to normal redistricting variances ^{[1], [4]}.

Scenario B: Excluding All Non-Citizens (Legal and Unauthorized)

A broader policy goal, embodied in the Equal Representation Act, is the complete exclusion of all 22.2 million non-citizens residing in the U.S., including legal permanent residents (green card holders), foreign students, and temporary specialty workers (H-1B, L-1) ^{[2], [6], [14]}. Statistical simulations conducted by the Congressional Research Service (CRS) and the Center for Immigration Studies (CIS) illustrate a much larger shift, but one that severely punishes major Republican strongholds ^{[5], [7]}:

The data table reveals an inescapable mathematical reality: while Democratic giants California and New York would forfeit an aggregate of four to six seats, Republican anchors Texas and Florida would forfeit three to five seats between them ^{[1], [5], [7]}. Because the states gaining those seats are split between midwestern battlegrounds (Pennsylvania, Michigan, Wisconsin) and slow-growing conservative rural states (Missouri, Indiana, West Virginia), the net partisan transfer in the House is roughly two to four seats—far short of the transformative Republican majority promised by rhetoric ^{[1], [5]}.

The Sunbelt Demographic Shift: Why the GOP’s Math Is Obsolete

A crucial flaw in the contemporary conservative critique is that it relies on an outdated geographic model of immigration ^[6]. During the 1990s and early 2000s, immigrant arrivals were heavily concentrated in traditional gateway states like California, New York, and Illinois ^{[1], [6]}. Over the past decade, however, the economic magnet of the American Sunbelt has radically redistributed the foreign-born population ^[6].

In a groundbreaking January 2024 study, David J. Bier, associate director of immigration studies at the libertarian Cato Institute, analyzed the Census Bureau’s Current Population Survey (CPS) to track where non-citizens actually moved between March 2019 and March 2023 ^[6]. The findings completely upend the partisan narrative:

"From March 2019 to March 2023, 95 percent of the net increase in the U.S. non-citizen population occurred in states with Republican-controlled legislatures. Contrary to the belief that non-citizens are boosting Democratic representation, restricting apportionment counts to citizens would penalize the very states whose economies have drawn the largest foreign-born influx." — David J. Bier, Cato Institute Research Analysis (2024) ^[6]

Driven by low taxes, affordable housing, and booming construction and agricultural sectors, the vast majority of non-citizen growth has migrated to states like Texas, Florida, Georgia, Tennessee, North Carolina, and South Carolina ^[6]. Meanwhile, high-cost Democratic states like California, New York, and Illinois have experienced net domestic outmigration and stagnant foreign-born growth ^[6].

Bier calculated that between 2019 and 2023 alone, the non-citizen population in Republican-led states expanded by approximately 1.2 million people—a demographic surge that translates into two entire congressional seats under the Huntington-Hill algorithm ^[6]. If non-citizens were excluded from the upcoming 2030 Census, Republican-led states in the Sunbelt would forfeit their own demographic growth, cutting off their own prospective gains in the Electoral College ^[6].

The Merit in the Critique: Intra-State Vote Dilution

While the claim of an inter-state partisan conspiracy is statistically unfounded, the conservative critique contains significant merit when applied to the micro-level mechanics of representation within individual states ^{[7], [10]}. This is where the tension between constitutional originalism and the modern principle of "one person, one vote" becomes acute ^{[10], [11]}.

Under the landmark Supreme Court ruling in Wesberry v. Sanders (1964), congressional districts within a state must be drawn with nearly identical total populations ^{[8], [11]}. Because districts are equalized by total resident headcount rather than citizen voting-age population (CVAP), districts with heavy non-citizen populations contain dramatically fewer eligible voters ^{[7], [10]}:

• The Los Angeles Example: In California’s 34th Congressional District (encompassing downtown Los Angeles and heavily immigrant neighborhoods), non-citizens make up nearly 25% of the total population ^{[7], [10]}. In the 2020 general election, approximately 232,000 total votes were cast to elect a representative ^[7]. In midterm cycles, total votes cast frequently drop below 120,000 ^[7].
• The Rural Heartland Example: In Montana’s Western District or Wisconsin’s 8th District, non-citizens comprise less than 2% of the population ^{[6], [7]}. In the 2020 election, more than 385,000 votes were cast to elect their respective representatives ^[7].

The mathematical consequence is undeniable: an individual citizen casting a ballot in an immigrant-heavy urban district exerts roughly 1.6 to 2.0 times the electoral influence of a citizen voting in a district composed almost entirely of eligible voters ^{[7], [10]}. An elected official in an immigrant-dense district answers to a much smaller constituency of voting taxpayers, even while enjoying an identical vote on the House floor to a member representing twice as many voting citizens ^[7].

Furthermore, federal grant distribution is heavily indexed to census headcounts ^[9]. Over 300 federal programs—including Medicaid, Title I school funding, Section 8 housing vouchers, and Highway Trust Fund apportionments—rely directly on decennial census numbers ^[9]. States and municipalities that attract large immigrant populations receive billions in additional federal taxpayer dollars, creating what conservative fiscal analysts describe as a perverse fiscal incentive to shield undocumented populations through sanctuary legislation ^{[2], [9]}.

The Constitutional Text: Why the 14th Amendment Chose 'Persons'

A rigorous factual analysis must address the underlying legal foundation: Is counting non-citizens an administrative loophole, or a deliberate constitutional choice? ^{[5], [8], [10]}

The text of Section 2 of the Fourteenth Amendment is unequivocal:

"Representatives shall be apportioned among the several States according to their respective numbers, counting the whole number of persons in each State, excluding Indians not taxed." — United States Constitution, Amendment XIV, Section 2 (1868)

The legislative history of the 39th Congress in 1866 reveals that this phrasing was not an accidental oversight ^{[5], [8], [10]}. Following the Civil War and the abolition of slavery, the Three-Fifths Clause was extinguished, meaning formerly enslaved Black Americans would now be counted as full persons ^[8]. Northern Republicans feared this would massively increase the congressional power of the South while Southern states continued to disenfranchise Black men ^{[8], [10]}.

To neutralize this advantage, prominent lawmakers—including Representative James G. Blaine of Maine and Representative Roscoe Conkling of New York—proposed basing apportionment strictly on the number of voters or citizens ^{[5], [10]}. However, that proposal faced fierce opposition from northern representatives whose industrial districts were populated by hundreds of thousands of non-naturalized European immigrants from Ireland, Germany, and Scandinavia ^{[5], [10]}. If apportionment were restricted to voters or citizens, Northern states like New York, Massachusetts, and Pennsylvania would have forfeited dozens of seats ^{[5], [10]}.

Furthermore, nineteenth-century legal theorists insisted on a core republican principle: that elected representatives govern everyone subject to the state's laws, not merely those who cast ballots ^[10]. As Representative John Bingham, the primary architect of the Fourteenth Amendment, argued on the House floor, representation belongs to "the entire people... women, children, and foreigners" because all persons pay taxes, obey criminal codes, and contribute to the economic commonwealth ^{[5], [10]}.

Consequently, the Joint Committee on Reconstruction explicitly rejected the citizen-only amendment and reaffirmed the "whole number of persons" standard ^{[5], [8], [10]}. As the Congressional Research Service noted in a comprehensive constitutional review, changing this baseline by statutory legislation—such as the Equal Representation Act—faces formidable constitutional obstacles that would almost certainly require a formal constitutional amendment ^{[5], [8]}.

Conclusion

The controversy surrounding the census and non-citizen apportionment in 2026 highlights the ongoing clash between two distinct philosophies of American governance: representation based on sovereignty of the ballot box versus representation based on territorial jurisdiction over all governed persons ^{[5], [7], [10]}.

From an empirical standpoint, the conservative talking point that counting non-citizens constitutes a grand partisan theft by Democratic blue states is fundamentally ungrounded in data ^{[1], [4], [6]}. The mathematical structure of the Huntington-Hill algorithm ensures that any exclusion of unauthorized immigrants or all non-citizens would penalize conservative Texas and Florida just as severely as liberal California and New York ^{[1], [4], [5]}. Because 95% of recent non-citizen population growth has flowed directly into Republican-led Sunbelt states, dismantling total-population apportionment would actually strip legislative seats and electoral votes from the nation's fastest-growing conservative strongholds ^[6].

At the same time, the conservative critique cannot be dismissed as pure partisan theater ^{[7], [10]}. At the congressional district level, counting non-citizens does create substantial disparities in citizen voter power, granting voters in dense immigrant districts significantly more individual leverage than their fellow citizens in low-immigration areas ^{[7], [10]}. While these disparities are a direct, intended feature of the Fourteenth Amendment’s compromise to represent all "persons," they present an enduring philosophical challenge in a constitutional republic founded on equality before the ballot ^{[8], [10]}. Resolving that tension will require a sober reckoning with the text of the Constitution and the geographic realities of modern migration—not political rhetoric detached from the demographic facts.