No sauce offhand, nut remember reading Trump is blood type A-, Obama AB-, Bill Clinton AB-, GW Bush A-
Presidents are Rh- I believe Hillary is AB+ (eventhough she acts like an Rh neg chick)
Personal experience says there are two types of Rh- women. A) Laying on of hands healers, heal the world or B) fucking intense personal only loyal to you psycho. Both are tough to have relationships with. Rh positive chicks are more rational.
I'm Rh- I got a theory on the intensity of Rh- women. 15% of the population is Rh-, half men half women. Rh- women can only breed with Rh-, so they have a pretty limited choice on breeding partners. Rh- guys can breed with positive or negative. Less stress on partner choice for the guys.