Oklahoma – Oklahoma Sen. James Lankford responded on June 12 to reports and statements from federal officials and lawmakers regarding unaccompanied migrant children who entered the United States in recent years, highlighting claims that the Trump administration has located approximately 146,000 minors who were previously unaccounted for after crossing the U.S.-Mexico border.
“The Biden administration failed our country with their open border policies. For years, I have highlighted the hundreds of thousands of children that were lost and trafficked under his administration,” Lankford wrote, while praising efforts by Department of Homeland Security leadership involved in locating and tracking unaccompanied minors.
His remarks came after federal officials, including senior Justice Department and Homeland Security representatives, announced that the administration has made significant progress in locating children who entered the country without parents or legal guardians and were later released to sponsors in the United States.
According to reporting from multiple outlets summarizing a June 2026 federal briefing, officials said that out of roughly 450,000 unaccompanied migrant children who entered the country during a multi-year period, about 146,000 have been located through investigative follow-ups, enforcement actions, and case reviews. Officials also said that approximately 300,000 remain unaccounted for in terms of continuous federal tracking.
Federal officials involved in the announcement said efforts included identifying fraudulent sponsorship arrangements and reviewing cases in which children were released from federal custody into private homes. The Department of Justice also announced indictments in cases involving individuals accused of using false identities or fraudulent information to gain custody of migrant children.
Authorities said the initiative is focused on identifying potential trafficking victims and improving oversight of the sponsor system used for unaccompanied minors after they are transferred from federal custody to the Department of Health and Human Services (HHS).
The unaccompanied minor program has been the subject of ongoing scrutiny across multiple administrations. According to government data compiled by HHS, children who arrive without parents are initially placed in federal care before being released to sponsors while immigration proceedings continue. However, oversight challenges have been widely documented, particularly in maintaining consistent contact after placement with sponsors.
Federal watchdog reports have previously noted gaps in follow-up procedures, including missed court notices and difficulties tracking children after release. These issues have fueled debate in Washington over whether improvements are needed in sponsor vetting, case monitoring, and interagency coordination.
Supporters of the current enforcement push argue that stronger tracking systems and expanded investigations are necessary to protect vulnerable children from trafficking and exploitation. They say that gaps in oversight may have left some minors exposed to criminal networks or unsafe living conditions.
At the same time, immigration policy experts caution that figures involving “unaccounted for” children often reflect administrative tracking limitations rather than confirmed cases of disappearance or trafficking. They note that many children are ultimately placed with relatives or sponsors and may simply lose contact with federal systems due to changes in address or documentation issues.
The issue of unaccompanied migrant children remains one of the most politically sensitive aspects of U.S. immigration policy, with lawmakers continuing to dispute how many children are missing, how many are safely placed, and how effectively the government monitors their welfare after release.
As federal agencies continue their review efforts, officials say additional updates are expected as investigations into sponsor fraud and child welfare cases move forward.
Oklahoma Sen. Lankford reacts to border crisis, says Biden administration “failed our country” after 146,000 migrant children located
