India, Oct. 20 -- Federal prosecutors might use DNA evidence to try to prove Rep. Ilhan Omar (D-Minn.) committed immigration fraud, sources told the New York Post. People familiar with the investigation said that the feds used whistleblowers, government records and now obtained DNA in an effort to substantiate allegations that Omar and her family members, like her father, defrauded immigration authorities.

According to one source, the DNA evidence was critical to proving an allegation that Omar married her brother when she wed Ahmed Nur Said Elmi in 2009 in order to help him get a green card, which did not come to fruition.

It remains unclear where the DNA was taken before or after Homeland Security Investigations (HSI) searched Omar's ...