US investigators obtain DNA to investigate if Ilhan Omar married her brother: Report. Federal investigators have obtained DNA evidence to investigate allegations that US lawmaker Ilhan Omar married her brother, Ahmed Nur Said Elmi, in 2009 to help him obtain a green card, NY Post reported. Investigators also gathered government records and information from whistleblowers. Omar, a Somalia-born Democrat, has repeatedly denied that Elmi is her brother, calling the claims "absurd".