Is anyone actually watching the video? How about starting at 2:29 on. His half brother grew up well and is happy with his life in Kenya. I bet you Barack probably never knew about this half brother until recently. Barack's dad died when he was 21. This was 6 months after the birth of his half brother in this video. The last time Barack saw his father was in 1971 when barack was 10. I wouldn't consider this guy "family" when you never met.
Yeah, Barack's probably got more half brothers out there in Kenya that he probably doesn't know about.
I have plenty of family still in Africa that are happy to be there. That is the only life they know. If you don't know that there is something better out there then you aren't missing anything.