Then they screwed up and convinced the judge the Obama was born in Hawaii.
As for Irion offering the Kenyan BC - don't forget that the judge has to agree with the stipulation. I doubt any reasonable judge would accept such a stipulation especially if questioning Obama’s birthplace was at the core of the plaintiff's case - it is more likely that he would allow it to be entered into evidence and make Irion make his case as to why it was valid.
The reason the judge accepted the BC and stipulation was because Irion said Obama’s birthplace was irrelevant to his case.
What is the answer to question 1? Question 2? Question 3? Question 4?