She has been representing herself as married, using the Obama name even at the U. of Washington. She needed to "tie that off" so she could marry Lolo Soetero. Plus child custody issues, maybe.
Courts typically require a certificate of marriage be submitted with divorce papers.
Care to document that statement. There is all sorts of divorce information on the 'net. Find a requirement, one from Hawaii would be good, that requires the marriage certificate to be filed as part of the divorce paperwork.
Now I hope they were married, but in Kenya, but I've seen no evidence other than the divorce decree, indicating that they were.