Wonder if Joe saw the British files - http://www.mrconservative.com/2013/05/16165-british-national-archives-confirm-obama-sr-had-a-child-in-1961-kenya/
It would be impossible for Mr Obama to have a child in Kenya in 1961, but Kezia, his wife might have had one...and as his legal wife, any child she may have had would be considered to be his...