Yabut, then is he Barack Obama? How ya gonna prove that?
I have no idea how you would prove that.
On the other hand, Barack Obama Senior claimed paternity of Barack Obama, II to the Immigration and Naturalization Service on August 31, 1961.
A Y-Chromosome DNA test for Barry and selected male descendants of Barack Obama, the Kenyan, and of Frank Marshall Davis would prove conclusively of whether or not one of those two individuals was the father of Barry Obama Soetoro Obama. Who knows? Maybe it was the third man.