No, where did you hear that?
I didn’t hear it . I read the law.
For example, Sr could not have conferred his UK citizenship on Obama if born on US soil IF HE WAS BORN OUT OF WEDLOCK. I had to go round and round on this before a poster here finally got that I was right about it.
U.S. out of wedlock provision if he was born in Kenyan. 12 month residency required.
You can read about it in case law. You can read about it on the travel.gov site. You can read about it on Embassy websites.
I think a lot of people missed the part about the marriage not being valid because his dad was a bigamist.