The only new evidence since the linked article is some random Somali dude saying they are siblings.
The one thing that doesn't make sense is why her younger brother's immigration status would be different than hers (since that was the supposed motive for marrying him). She was a refugee brought here legally as a child through the refugee assistance program...her "brother" if he was really her brother would have the same status as her. Seems plausible that she married a family friend so he wouldn't get deported (which is illegal for sure), but probably not her brother.
Link: Did U.S. Rep. Ilhan Omar Marry Her Brother?
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