I think I mentioned before that Obama is left handed. I'm left handed too. I like left handed people.
The last left handed president we had was Clinton. Obama and Clinton are both left handed. They are both Leos. They are both only children. Well, depending on your definition of only children. I'll let you do your own research there. Suffice it to say that both of them had half-brothers or sisters. I think Bill's half brother was 10 years younger than him and Barack's half sister was 9 years younger. Another interesting thing comes along here. Both of their younger (half) siblings were also Leos.
You should go do some research on only child syndrome. You should go do some research on Leos. It's not all pretty. I'd write it all up for you but I'm afraid you'd just think I was being a brat.
Hillary Clinton is a Scorpio. Her predecessor in her current job, Condoleezza Rice, was also a Scorpio. How many secretaries of state have been Scorpios? That's not something I feel like researching at this juncture.