I think you might be right about this. The birth certificate number would not be a social security number so there would be no good reason to block it out. Obama has some explaining to do here.
“The birth certificate number would not be a social security number so there would be no good reason to block it out.”
On further thought, I think it’s possible someone blacked out the certificate number due to mistaken but innocent privacy concerns. I’m awaiting Polarik’s reply to AJStrata’s criticisms.