The only unproven assumption is that Obama was born in Hawaii. That's it. The rest of the evidence shows he was born elsewhere or can't prove he was born in Hawaii. It starts with a jpg that unnecessarily had the certificate number redacted. Then it leads to a set of photos that had EXIF data scrubbed and a certificate number that can't be confirmed. The former director of the Dept. of Health released two public statements ... NEITHER of which says his COLB is legal or genuine. His own wife says Kenya is his home country. One of his political friends, Tammy Duckworth, was quoted in a story saying he was born in Indonesia. A high school newspaper story that contained comments from an interview with Obama's sister (from the same high school where she works) says he was born in a different hospital than the one he currently claims. In a 1995 interview, Obama says he wasn't named until his father left for Kenya (although it doesn't say if it was the first or second time). Two known long form birth certificates contain certificate numbers showing Obama's number is impossibly out of sequence. The state of Hawaii REFUSES to confirm who the factlack dot org certificate number belongs to, even though they have statutory authority to release the number and the name. A school record lists Obama under a different last name and as a citizen of Indonesia ... which is the only available record declaring ANY citizenship for Obama. Kenyan parliament members made two separate, unrelated statements declaring Obama was born in Kenya. The state of Hawaii changed its disclosure law to AVOID releasing information about Obama that can otherwise be legally released. Several stories claim different years for when Obama moved to Indonesia and when his mother married his stepfather/adoptive father. The governor of Hawaii makes a public comment that a news release was issued saying Obama was born in Kapiolani Hospital, but no such news release exists. The state department fails to provide all of Stanley Ann Dunham's passport records, making an unsupported claim that some of the records were destroyed. An interview with SAD's friend in Washington state puts SAD in Washington awkwardly soon after the baby was born with no apparent ability to care for the baby. School records and phone directory listings put SAD in Washington the entire time she was supposedly married to Obama's father. Obama's father is quoted extensively in a story about being involved in the Honolulu community, but fails to mention he has a local wife and child. The list goes on and on.
A piece of swiss cheese the size of Montana doesn't have this many holes. Applying Occam's Razor then, the simplest answer is that Obama cannot prove he was born in Hawaii and that he is hiding this information from the public, perhaps with help from others, wittingly and unwittingly.
Thank you for this summary. There are far too many questions about BO still open.
Add to that list the evidence that BO's birth announcement which allegedly appeared in the Honolulu Star-Register and Honolulu Advertiser newspapers doesn't match the pattern of how other birth announcements have appeared in the respective papers, and how the available library microfilm rolls for these newspapers covering the birth announcement's date range show evidence of tampering.