http://www.theobamafile.com/obamacolb.htm
It was widely rumored but apparently no one has seen an actual copy of her COLB, but looking at the link above, pay attention to the comment about Act 96 which permits foreign born children to have a COLB issued up until the 1970’s.
There is no Hawaiian birth certificate
I knew about that. Most Americans do not. They think that ONLY people born in Hawaii can get Hawaiian COLBs. That's part of the problem we face when trying to discuss this with uninformed people.