In another couple of generations the entire Senate will sport the Habsburg lip and be carriers or victims of haemophilia.
Now that you mention it, the DC political establishment does seem to have inbred itself into an ugly melange of stunted ethics that can't seem to get any vigor from outside blood (state pols generally playing the role of minor German prinzessen). The financial community are essentially the Fuggers (choose your pronunciation) of our day, and if one tosses in the congenital syphilis that is Marxism, and there is one royal mess.