By Yiannis Damellos and Mars Strangelove Jr.
Based on reporting by The Washington Post
October 15, 2026
The Trump administration is once again investigating Democratic Rep. Ilhan Omar over allegations concerning her immigration history. But an exclusive report by The Washington Post has brought an important piece of history back into the picture: the first Trump administration examined many of the same questions seven years ago and found insufficient evidence to justify a full investigation.
According to the Post, a political appointee in the administration approached U.S. immigration authorities in 2019 and requested a review of Omar's records. At the time, she was a newly elected congresswoman from Minnesota and had already become a frequent target of President Donald Trump and conservative commentators.
The request raised concerns among career immigration officials, who regarded the effort to scrutinize a prominent political critic as unusual.
The review examined Omar's immigration history, her family's arrival in the United States as refugees from Somalia, questions about her age and allegations circulating in conservative media about her previous marriage. Homeland Security Investigations ultimately concluded that there was insufficient evidence of wrongdoing to justify pursuing a full investigation, according to a former official interviewed by the Post.
So, in 2019, investigators did not find sufficient grounds to proceed.The allegations that returned seven years later
The renewed investigation focuses on whether Omar or her late father provided false information on immigration paperwork during the 1990s. Authorities are examining questions about her date of birth and her father's military history in Somalia.
Three former officials familiar with the 2019 review told the Post that both issues had already been considered. According to one of them, immigration officials could not reliably establish Omar's precise age because refugees often arrive from countries where birth records are incomplete or unavailable. Officials also reviewed her father's immigration file and found no problems, the Post reported.
The earlier inquiry also examined allegations concerning Omar's former husband, Ahmed Nur Said Elmi. Conservative commentators had claimed that the two were siblings who entered into a sham marriage to obtain immigration benefits. Those claims have circulated for years, but the Post's reporting does not establish them as fact.
Elmi had sought to convert his marriage-based green card from conditional to permanent status. Immigration authorities requested additional evidence concerning the validity of the marriage, and he subsequently withdrew the application, according to a former official cited by the newspaper.
That episode is not proof that Omar committed immigration fraud. Nor does it establish the truth of the allegations about her family relationship with Elmi.
A home search and a renewed federal investigation
The issue returned to the forefront this week when federal agents searched Omar's Washington home under a judicially authorized warrant.
The search formed part of the renewed immigration investigation. Agents seized documents and electronic devices, including her cellphone and passport, according to people familiar with the operation cited by the Post.
Before approving the warrant, a federal magistrate judge imposed conditions intended to protect constitutional safeguards governing congressional work. Those protections are important because the Constitution's Speech or Debate Clause limits executive interference with lawmakers' legislative activities.
The Justice Department has declined to discuss the ongoing investigation publicly.
Omar has rejected the allegations and described the renewed scrutiny as politically motivated. Her spokesperson accused Trump of spreading falsehoods about her family and immigration history and characterized the investigation as an escalation of the president's longstanding hostility toward the congresswoman.
Trump, meanwhile, has publicly criticized Omar while denying that he had anything to do with the search. The existence of the investigation alone does not establish that the president directed it.
Citizenship is not a matter of political discretion
The consequences could extend beyond the investigation itself.
The Post reported that the administration is considering possible criminal charges and exploring whether it could revoke Omar's citizenship certificate through an administrative process. Such a move would be legally contentious and could face a substantial court challenge.
The newspaper's sources emphasized that the earlier review had found no problem with Omar's naturalization. One former official told the Post that, in their assessment, her citizenship was secure and the earlier inquiry had found no evidence of fraud.
Any attempt to challenge citizenship would therefore have to confront both the evidence gathered in the new investigation and the legal requirements governing such proceedings. An administrative action affecting a citizenship certificate would not automatically strip someone of citizenship, although it could create serious practical and legal complications.
The timing has also attracted attention. Omar's home was searched weeks before the November midterm elections, when she is seeking reelection. Legal experts cited by the Post questioned whether the operation complied with the norms intended to prevent law enforcement from being used for political purposes.
A separate inquiry into her finances
The immigration investigation is not the only federal scrutiny facing Omar.
The Post reported that Washington's U.S. attorney's office has also opened a separate investigation into her congressional financial disclosures. That inquiry concerns statements relating to her personal finances and is distinct from the questions surrounding her immigration history.
The existence of a second inquiry should not be treated as proof of wrongdoing in either matter. Each investigation must be assessed on its own evidence and legal merits.
The question the public deserves answered
The most consequential detail in the Post's reporting is not simply that Omar is under investigation. It is that the first Trump administration examined many of the same immigration questions in 2019 and, according to former officials involved in that review, found insufficient evidence to pursue the matter further.
That history does not prevent investigators from reopening a case if new evidence emerges. Nor does a previous decision to abandon an inquiry guarantee that a new investigation will reach the same conclusion.
But it raises legitimate questions. What new evidence, if any, has emerged since 2019? Why have allegations examined years ago become the focus of a major federal operation now? And what safeguards will ensure that the investigation is conducted independently of political pressure?
Those questions cannot be answered by accusations, political speeches or the spectacle of federal agents searching a congresswoman's home. They require evidence, transparent legal reasoning where disclosure is possible, and a process that applies the law equally to political allies and opponents. Until the facts are established, allegations remain allegations. And when the government reopens a matter previously examined by its own officials, the public has every reason to ask what has changed.
Source and credit: This article is based on reporting by Ted Hesson, Jeremy Roebuck, Perry Stein and Salvador Rizzo, The Washington Post, October 15, 2026, “Trump officials scrutinized Omar in 2019. They didn’t find citizenship issues.”.
Additional context: The Washington Post, “U.S. probe of Rep. Ilhan Omar focuses on birth date, citizenship papers, people familiar say”, October 13, 2026.
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