Yeah i think you will see more information coming out on little ilhan.
My understanding is the brother was settled in u.k and so he could come to America to study the marriage took place. However, there are claims of ilhans parent lying to immigration (one parent went to u.k the father i think to u.s, so not her doing) and they are quite believable as it is out there that 80 plus % of asylum claims from somalia where bogus at around her time of entry in material facts. In her case it can be shown that her family hitched onto another families tree and claimed to be omars. But anyway if you really want the truth on her go look.