Yep, the smartest lawyer who ever lived didn’t even know until his 40s that being born in Canada gave him Canadian citizenship.
Everyone who believes that raise your hand.
His explanation is that his mother told him there had to be a positive affirmation of Canadian citizenship.
I’ve seen enough threads about Obama’s Indonesian citizenship to realize that the issue could be murky.
And a Constitutional lawyer is not necessarily the same thing as an immigration lawyer. There are people who claim to be experts who still don’t realize that Obama’s alleged (false) claim of a HI birth is critical to his citizenship because of his alleged mother’s age at the alleged date of birth (I say “alleged” because the HI registrar has confirmed that none of those alleged facts can be legally verified). So even people who claim to know don’t - partly because the laws governing who is a US citizen were different at different periods of time.