Historic Lows Rattle Immigration Debate

Border Patrol officers speaking with individuals near a fence.

When a sitting administration declares it has delivered “the most secure border in American history,” it is not engaging in rhetoric alone; it is pointing to a specific constellation of enforcement policies, operational metrics, and political incentives that together define what “border security” means in practice.

Key Points

The Trump administration’s second term centers its border narrative on zero “catch and release” and historically low illegal crossings, backed by DHS and CBP data releases.
Internal metrics show dramatic drops in encounters, gotaways, and removals compared to the Biden era, with officials citing negative net migration in 2025 for the first time in at least fifty years.
Independent fact-checkers broadly confirm unprecedented low encounter levels, while also highlighting the usual ambiguities around absolute claims such as “zero releases” or “most secure ever.”
Political communication and fact-checking research explain why border statistics are framed in absolutes and later dissected at a granular level, rather than contradicting the core trend.

From “Open Borders” to Claims of Historic Control

The Trump administration’s border story in its second term is built on contrast: a “wide open” southern frontier under Biden giving way to what DHS and the White House now describe as total operational control. In official releases, the Department of Homeland Security and U.S. Customs and Border Protection report that daily border encounters have fallen by more than 90 percent since Trump returned to office, with migrant crossings down by 99.99 percent and CBP asserting “total control of the border.” These are not campaign talking points drafted in isolation; they are embedded in formal performance briefings that emphasize declines in encounters, “gotaways” (migrants who evade detection), and drug flows such as fentanyl traffic, which DHS reports fell by more than half year-over-year at the southern border.

The White House amplifies those metrics into a larger narrative of a historic turnaround. In a December 2025 article, the administration describes a “historic border victory” in which more than 2.5 million illegal aliens have been removed from the United States, illegal border crossings have fallen to the lowest level since 1970, and net migration has turned negative for the first time in at least five decades. That same framing appears in shorter Releases and “Promises Made, Promises Kept” fact sheets, which stress that Trump “didn’t need legislation” to achieve what DHS calls “the most secure border in American history,” relying instead on aggressive enforcement of existing authorities.

The Zero-Release Streak and the End of Catch and Release

The centerpiece of the administration’s claim is the assertion that illegal border crossers are no longer released into the U.S. interior after apprehension—a direct reversal of what Trump brands Biden’s “catch and release” era. DHS and CBP national media releases, echoed by sympathetic outlets, describe long streaks of “zero releases at the border,” initially measured in months and then in full years. One White House priorities page, updated during the second term, states flatly that “The Trump Administration has not released a single illegal alien into the U.S. for eight consecutive months.” Other reporting from conservative media, citing CBP data, records 11, 12, and 13 consecutive months of zero releases, tying them to concurrent historic lows in crossings and apprehensions.

In practical terms, “zero releases” means that migrants apprehended between ports of entry are either detained, quickly removed, or processed under expedited procedures that do not allow them to remain in the U.S. while pursuing claims at leisure. The administration underscores this by pointing to removals—over 2.5 million illegal aliens removed—and large-scale operations in sanctuary jurisdictions that target criminal noncitizens for arrest and deportation. It further highlights an internal statistic that only nine illegal immigrants were released into the U.S. during the first months of Trump’s second term, a figure it presents as a 99.99 percent decrease compared with the same period under Biden.

Apprehensions, Encounters, and the “Most Secure” Claim

Security at the border is ultimately a question of flows: how many people are trying to enter illegally, how many are intercepted, and how many slip through. Trump’s DHS emphasizes massive declines in all of those categories relative to the previous administration. Official releases document that March 2025 saw fewer than 7,200 monthly encounters, the lowest recorded in CBP history, and that daily encounters in February fell below 200—a scale more commonly associated with isolated sectors than the entire southwest border. These figures align with a broader claim that illegal crossings fell to the lowest level since 1970, a point later echoed in external coverage and fact-check roundups.

Independent analysts broadly agree that encounter numbers plunged. NPR’s annotated fact-check of Trump’s State of the Union confirms that Border Patrol encounters with migrants crossing from Mexico fell to their lowest levels in more than fifty years, using Pew Research Center’s analysis of government statistics. The same review notes that there were still hundreds of thousands of crossings—around 237,538 in 2025—but stresses that relative to both Biden-era peaks and decades of prior data, the drop is unmistakable. PolitiFact, reviewing Trump’s earlier claim to have handed Biden the “most secure border” at the end of his first term, calls that formulation an exaggeration on technical grounds but accepts that later encounter data under Trump show dramatic declines from Biden’s highs.

How Metrics Become Political Absolutes

The gap between “historic low encounters” and “most secure border ever” is not a statistical dispute so much as a problem of translation. Border professionals tend to talk in terms of apprehension rates, gotaway estimates, and sector-by-sector encounter patterns—moving parts that rarely lend themselves to slogans. Politicians and communicators, by contrast, need clear headlines: zero releases, 95 percent drops, total control. Research on fact-checking and political communication helps explain how those numbers are used and later contested without necessarily undermining the underlying trend.

Studies of global fact-checking effectiveness find that structured fact-checks significantly improve public factual accuracy, even across ideological lines, but also show that politicians exposed to corrective coverage reduce the number of verifiable statements they make and avoid quantifiable claims that can be easily challenged. Methodology write-ups from fact-check organizations like PolitiFact and Ballotpedia describe a process of selecting declarative claims—“most secure ever,” “zero immigrants released”—for granular scrutiny, parsing DHS reports, CBP data, and independent estimates to determine whether the absolute wording matches the narrower reality. Over time, this creates a pattern: administrations make striking, absolute claims based on real but narrower metrics; fact-checkers respond by agreeing with the general direction while downgrading the absolutes as “partly true” or “exaggerated.”

Counter-Checks, Definitions, and Granular Caveats

Even in a cycle where published reporting does not fundamentally contest the administration’s core achievements—dramatically lower crossings, sharply reduced releases—minor caveats still emerge on the margins. The Washington Examiner, for example, has reported that some immigrants who illegally crossed the U.S.-Mexico border were released into the country despite DHS’s public claims of zero releases, highlighting cases processed under alternatives to detention or parole that did not fit strict “catch and release” definitions. That tension illustrates a recurring definitional problem: whether short-term parole, transfers to other agencies, or releases under court order count against a political promise of “zero releases.”

Fact-checkers also question historical superlatives. When Trump first claimed he handed Biden “the most secure border,” PolitiFact pointed to DHS apprehension rate metrics showing that the border, by that narrow measure, may have been more secure in 2016 under Obama, while acknowledging that later data weren’t yet available to fully evaluate Trump’s statement. As new CBP statistics and Pew analyses accumulated, more outlets accepted that Trump’s second term produced encounter rates unmatched in the last half-century, but they still avoid the categorical phrase “most secure in American history,” preferring the more precise “lowest level in 50 years.”

Negative Net Migration and Domestic Implications

One of the more consequential claims attached to the border record is that the United States experienced negative net migration in 2025 for the first time in at least fifty years. Net migration measures the difference between the number of people entering and leaving a country over a given period; a negative figure indicates that more people departed than arrived. For an advanced economy with long-standing net inflows, such a reversal is politically powerful: it suggests not only that illegal entries have been suppressed, but that legal flows and return migration have shifted in ways that reinforce a broader restrictionist posture.

DHS and the White House attribute that negative net migration to sustained enforcement: tightened border controls, accelerated removals, and targeted operations in sanctuary jurisdictions designed to remove criminal noncitizens from major cities. Public rhetoric then connects those changes to domestic outcomes—reduced strain on local services, fewer criminal threats from transnational gangs, and perceived protection of American workers’ wages. While independent demographers will continue to scrutinize the net migration figures as more Census and CBP data are released, the headline itself signals a strategic intent: an immigration system used not just to manage flows but to deliberately reset the country’s demographic trajectory.

How This Border Moment Fits a Longer History

It is tempting to treat any administration’s claim of “most secure ever” as an isolated boast, but the pattern is older and broader. Every modern presidency has inherited a border already shaped by its predecessor’s metrics and definitions. During Obama’s second term, DHS apprehension rate data allowed analysts to argue that the southwest border was more secure in 2016 than at any point since 2000. Under Trump’s first term, wall construction and tightened asylum processing produced sharp declines in crossings in many sectors, which his team framed as vindication of a deterrence approach. Biden’s years saw record-high encounters driven by global displacement and policy shifts, leading critics to speak of “open borders” and prompting later Biden-era tightening that already began to reduce flows before Trump returned to office.

Trump’s second-term numbers, if sustained and accurately measured, mark a new extreme in that long arc—fewer daily encounters than border agencies have recorded in half a century, multi-month streaks of zero releases, and credible prospects of sustained negative net migration. Independent fact-checkers will continue to argue about absolutes, historians will continue to debate which mix of enforcement, legal immigration, and economic conditions yields genuine “security,” and future administrations will inherit this new baseline the same way Biden inherited Trump’s first-term metrics. For now, the structure of the evidence supports a clear judgment: whatever one’s politics, the United States is living through an unparalleled experiment in how tightly a modern democracy can control its borders—and what it means to translate that control into simple, declarative claims.