Federal prosecutors plan to use DNA taken from Rep. Ilhan Omar’s Washington residence to prove she committed immigration fraud by marrying her brother, sources say.

Sources familiar with the probe told the New York Post that the Department of Justice is building a case around DNA evidence collected at the Somalia-born congresswoman’s D.C. home. Prosecutors aim to show she wed Ahmed Nur Said Elmi in 2009 in a sham marriage meant to help him secure a green card that never came through.

The DNA, paired with records and a recent home search, is being treated as critical proof in a years-long criminal investigation into alleged immigration fraud. No charges have been announced. The focus now sits on whether biological evidence can lock down the family relationship at the center of the claim.

Fox News confirmed federal authorities have obtained Rep. Ilhan Omar’s DNA as part of the ongoing immigration-fraud investigation. How agents got the sample remains unclear. Early talk of dumpster diving has been disputed.

Home search and the conspiracy track

Homeland Security Investigations searched Omar’s Washington, D.C., residence on Oct. 12 and seized property tied to the probe. That warrant did not appear in a vacuum. Investigators had already spent months examining her background before the raid.

U.S. Attorney Jeanine Pirro addressed the legal threshold in plain terms.

"That judge would not have signed that warrant unless there was probable cause. If there was a crime committed, it will be prosecuted."

Pirro’s office has also opened a separate financial investigation into the Minnesota Democrat. The Biden administration previously looked at her finances after reports of a multimillion-dollar net worth. The immigration track now runs alongside that money review.

Former federal prosecutor Neama Rahmini explained why older conduct still matters in court.

"If you argue a conspiracy, you can allege overt acts in furtherance of the conspiracy that are outside the statute of limitations."

By framing the case as conspiracy to commit immigration fraud, prosecutors can reach back to the 2009 marriage and related acts even when standard time limits might otherwise block a simple fraud count. That approach keeps decade-old allegations alive if agents can show continued steps in furtherance of the scheme.

Readers following the long-running scrutiny will recall earlier reporting on a DHS investigation into whether Omar married her brother to bring him into the country.

ICE groundwork and the Powerline trail

Breitbart News reported that ICE agents had been looking into Omar for months before last week’s raid. Agents met in January with Scott Johnson of Powerline Blog, one of the first online outlets to publish the immigration-fraud allegations years ago.

Whistleblowers and government records have fed the probe alongside the DNA. Sources have also pointed to the possible involvement of family members, including Omar’s father, in alleged efforts to mislead immigration authorities. Those claims remain part of the investigative picture, not proven charges.

The core allegation is straightforward. Omar married Elmi in 2009. Investigators believe he is her brother. The stated purpose was a green card. The benefit never arrived. DNA from the D.C. residence is now the tool prosecutors hope will close the biological gap that paper records alone could not.

Related coverage has already examined how a DHS secretary described findings on the marriage claim and raised the prospect of serious immigration consequences if the facts hold.

Political pushback meets the warrant standard

The raid and citizenship scrutiny drew sharp political reaction. Former President Barack Obama called the federal probe “appalling” after agents hit Omar’s home. That defense did not erase the probable-cause finding a federal judge signed off on before the Oct. 12 search.

Accountability does not turn on party loyalty or media framing. It turns on whether a sitting member of Congress entered a fraudulent marriage to game the immigration system, and whether DNA and records can prove it. Lawful immigrants who followed the rules have every right to expect the same standard applied at the top.

The same period of scrutiny has included other family legal trouble, including a Minneapolis police raid on the home of Omar’s son that netted guns and ammunition. Separate matters. Same demand for equal enforcement.

Earlier Obama statements defending Omar against the citizenship probe repeated the “appalling” line and cast the work as political targeting. Investigators still needed a judge’s signature. They got one. Property was seized. DNA is now in federal hands.

Open questions remain. Absolute calendar dates for every earlier ICE step are thin in public reporting. The precise lab match status of the DNA has not been detailed. No indictment or case number has been released. The green-card effort’s failure is described as never having come to fruition, yet full documentary trails still sit with investigators.

What is public is enough to see the shape of the case: a 2009 marriage, an alleged sibling relationship, a green-card motive, a years-long probe, an Oct. 12 search, DNA from the D.C. residence, and a conspiracy theory of the case designed to clear statute-of-limitations hurdles.

Political allies can call the work appalling. Judges sign warrants on probable cause. Prosecutors now hold biological evidence they believe can finish the proof.

Immigration law is not optional for ordinary applicants, and it is not optional for members of Congress. If the DNA and records show a sham marriage to smuggle a relative past the rules, the system either enforces the law or admits the rules were never real.