Which assets specifically are you speaking of?
According to a CNN report I just read, Ivanka Trump is going to play an active role in her father's administration, assuming some of the duties normally assigned to the first lady. I don't see the difference really. Perhaps you think the wives should be taken out of the WH as well, but this is the way it's been for a long time. Ivanka is a close family member and, the way I see it, Trump can have her play a role if he wishes. What ethical lines specifically would you point to?