Obama is not my favorite person for a few reasons, but I think I saw him singing the anthem. Maybe he can't chew gum and rub his tummy at the same time.
And personally, I can't remember what I do when the anthem plays, I have to wait until I get to the next ballgame and see what happens. It is like reciting a phone number LOL, if I need to give it to you I can recite it, if you ask me what it is I don't know...I'm getting old, or senile, or both. LOL.