At the height of the Biden administration's parole pipeline, the Department of Homeland Security released roughly 87 percent of migrants who arrived at the southern border, a federal watchdog has confirmed in a new report that puts hard numbers on what critics long called a catch-and-release system operating at industrial scale.
The findings come from the DHS Office of Inspector General, which examined how Customs and Border Protection processed migrants during the border surge that defined much of the Biden presidency. The numbers paint a picture of a system that, by design or dysfunction, funneled the vast majority of arriving migrants directly into the American interior.
The OIG report, first detailed by Breitbart News, found that during fiscal year 2024, CBP released approximately 87 percent of migrants processed at the southern border into the United States. That figure captures the peak of what the Biden administration structured through its parole authority, a legal mechanism that allows DHS to admit individuals into the country on a case-by-case basis for "urgent humanitarian reasons" or "significant public benefit."
The sheer volume tells the story. Under federal immigration law, parole was designed as a narrow, individualized tool. The Biden DHS transformed it into a mass-processing conveyor belt. The OIG's findings confirm what Republican lawmakers and immigration enforcement advocates argued for years: the administration used parole not as an exception but as a default setting.
The watchdog examined CBP's processing outcomes and found that only a small fraction of arriving migrants were detained or promptly removed. The overwhelming majority received parole or were released on other forms of prosecutorial discretion, effectively placing them into the interior with future court dates that, in many cases, stretched years into the future.
The Biden administration built several parole programs that operated simultaneously. These included the CBP One app, which allowed migrants to schedule appointments at ports of entry, and the CHNV program, which granted parole to nationals of Cuba, Haiti, Nicaragua, and Venezuela who had American sponsors. Together, these programs processed hundreds of thousands of migrants per year outside the traditional asylum and immigration court framework.
Critics called it a shadow immigration system. Supporters called it orderly processing. The OIG report does not render a political verdict, but the 87 percent release rate speaks to the operational reality on the ground. When nearly nine out of ten people who show up at the border walk into the country, the border functions less as a boundary and more as a processing center.
The consequences of that approach have played out in communities across the country. In Texas, authorities have charged illegal immigrants in violent crimes including strangulation murders, cases that fuel public anger over a system perceived as prioritizing volume over vetting.
One factor the Biden administration repeatedly cited was limited detention capacity. ICE detention beds numbered roughly 40,000 during much of the Biden term, a figure that could not keep pace with monthly border encounters that regularly exceeded 200,000. The administration argued that releasing migrants with notices to appear was the only practical option given the mismatch between arrivals and available space.
That argument never satisfied enforcement hawks, who pointed out that the administration actively resisted congressional efforts to expand detention funding. The result was a self-reinforcing cycle: high arrivals overwhelmed limited beds, which justified more releases, which encouraged more arrivals.
The OIG report does not assign blame for the capacity shortfall. But it documents the downstream effect with precision. An 87 percent release rate is not an accident of logistics. It reflects policy choices about who gets detained, who gets removed, and who gets waved through.
The immigration court backlog compounded the problem. Migrants released into the interior joined a queue of more than three million pending cases, with average wait times stretching beyond four years in many jurisdictions. For practical purposes, release meant years of residency in the United States regardless of the merits of any underlying asylum claim.
The Trump administration, which took office in January 2025, has moved aggressively to dismantle the parole pipeline. It terminated the CHNV program, suspended CBP One scheduling, and directed ICE to prioritize interior enforcement. The administration has framed the OIG findings as validation of its border security posture.
Federal courts have become the primary battleground over these reversals. A federal appeals court recently cleared Texas to arrest suspected illegal border crossers under state law, a decision that reflects the broader judicial shift toward permitting more aggressive enforcement measures.
At the same time, the administration has faced resistance from judges appointed during the Biden and Obama years. A Biden-appointed judge freed a Dominican national wanted by Interpol for murder from ICE custody, a ruling that drew sharp criticism from enforcement officials and conservative legal commentators.
The parole statute, found in Section 212(d)(5) of the Immigration and Nationality Act, grants the DHS Secretary discretion to parole individuals into the United States on a "case-by-case basis." That phrase has become the legal fault line. Republican attorneys general and conservative legal groups argued that mass parole programs violated the case-by-case requirement, turning an individualized discretionary tool into a categorical admission policy.
Several federal courts agreed, issuing injunctions against portions of the CHNV program and other parole initiatives before the Biden term ended. The OIG report does not address the legality of the programs directly, but the scale it documents, 87 percent of arrivals released, reinforces the argument that "case-by-case" had become a legal fiction.
The Department of Justice under the Trump administration has taken its own steps to reassert federal control over immigration enforcement. DOJ sued Connecticut over a law that required ICE agents to identify themselves and banned masks during operations, part of a broader push to remove state-level obstacles to enforcement.
The OIG report establishes the release rate but leaves several critical questions for investigators and policymakers. Authorities have not publicly confirmed how many of the released migrants appeared for their scheduled immigration court hearings. The no-show rate for parolees remains a contested figure, with the administration and advocacy groups citing different data sets.
Investigators will also need to determine how many parolees were adequately vetted before release. The Biden administration maintained that all parolees underwent background checks against federal databases. Critics countered that checks against U.S. databases cannot catch individuals with criminal histories in countries that do not share records with American law enforcement.
The report also does not address how many released migrants have since been encountered by law enforcement for criminal activity. That data exists in fragments across federal, state, and local systems, but no comprehensive accounting has been published. The political fight over that number will likely intensify as the 2026 midterm cycle heats up.
Taxpayer-funded organizations that facilitated migrant processing and resettlement have also drawn scrutiny. A California activist group banked $34 million in taxpayer funds before anti-ICE riots drew congressional probes, raising questions about the financial infrastructure that supported the parole pipeline.
The 87 percent figure will land differently depending on where you sit. For the Biden administration's defenders, it reflects a humane response to unprecedented migration pressures. For its critics, it confirms that the administration deliberately chose not to enforce the border in any meaningful sense.
The OIG report strips away the political framing and leaves the raw number. Nearly nine in ten migrants who arrived at the southern border during the parole pipeline's peak were released into the country. That is not a talking point. It is an audited finding from the government's own internal watchdog.
What a country does with its border says something about whether it intends to remain a country. The inspector general just told us what the last administration decided.
