[JoeDetweiler]

He’s only “half” Irish if you believe, as ABC apparently does, that having one Irish great-great-grandparent out of 16 somehow adds up to half...........

http://justoneminute.typepad.com/main/2009/07/so-that-would-be-black-irish.html

[The Sons of Liberty]

He’s only “half” Irish if you believe, as ABC apparently does, that having one Irish great-great-grandparent out of 16 somehow adds up to half...........

Those that become [so-called] journalists are usually far from being the best and certainly not the brightest.

[MrEdd]

He’s only “half” Irish if you believe, as ABC apparently does, that having one Irish great-great-grandparent out of 16 somehow adds up to half...........

Of course it does.

One Black African great grandparent, three Arabic great grandparents, and four Caucasian great grandparents made Barack Obama black.

Can't you do simple math?